CN102090705A - Method for improving tobacco-drying process capability - Google Patents
Method for improving tobacco-drying process capability Download PDFInfo
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Abstract
The invention relates to a method for improving the tobacco-drying process capability. The method comprises the following steps of: acquiring raw data of a plurality of process parameters of a tobacco-drying process; according to the raw data, calculating the process capability index of all process parameters respectively; according to a preset process capability evaluation function, converting the process capability indexes to obtain process capability evaluation values; performing weighted average of the obtained process capability evaluation values to obtain the batch process capability evaluation value of the current batch; and judging whether the batch process capability evaluation value reaches the preset threshold value, if the batch process capability evaluation value does not reach the preset threshold value, checking whether the process capability evaluation values of all process parameters of the current batch reach the preset threshold value and performing optimal operation of the process parameters, of which the process capability evaluation values do not reach the preset threshold value. In the method, the batch process capability evaluation value of the current batch is obtained by calculating the dispersibility of the characteristic values of all process parameters of the tobacco-drying process to determine the batch having problems, and the process parameters having defects are traced, so that a solid foundation is provided for technicians to adjust and optimize the tobacco-drying process.
Description
Technical field
The present invention relates to cigarette throwing processing leaf silk dry technology, relate in particular to the method that improves the drying process process capability.
Background technology
In cigarette processing throwing link, drying process is the core process of throwing process, its treatment effect directly influences the cigarette product quality, therefore stable baking silk technological parameter, reach baking silk production engineering specifications, improve baking silk process capability, have great importance improving cigarette product quality and stability.
Existing baking silk Evaluation on effect is based on determined its accordance to the leaf silk of tobacco-dryer exit in the mode of sampling inspection, according to the sampling Detection result baking silk technological parameter is optimized.Because the existing processes parameter optimization is based on the result to drying process outlet leaf silk sampling Detection, and consequently the effect of the multinomial technological parameter comprehensive function of drying process embodies, its sample detection result's qualification rate can not embody the control effect of each technological parameter of drying process in whole process of production fully, carrying out technical process control optimization needs the technical staff to have more rich experience can to find out the exact cause and provide corresponding solution, and for the more shallow technical staff of experience, then obviously very difficult, often need to expend more man-hour and carry out repetition test that good optimization effect can be arranged, this must increase the human cost and the time cost of optimizing process.
Summary of the invention
The objective of the invention is to propose a kind of method that improves the drying process process capability, in time find the weak link in the baking silk technical process, and instruct process modification and optimization equipment to control according to this, thereby make optimizing process be no longer dependent on veteran technical staff, and reduced human cost and time cost.
For achieving the above object, the invention provides a kind of method that improves the drying process process capability, comprising:
Gather the initial data of the multinomial technological parameter of drying process;
Calculate the process capability index of every technological parameter respectively according to the initial data of described multinomial technological parameter;
According to default process capability evaluation function the process capability index of every technological parameter is estimated, obtained the process capability assessed value of every technological parameter;
Process capability assessed value to described every technological parameter is weighted on average, obtains current batch batch process capability assessed value;
Judge whether a described current batch batch process capability assessed value reaches predetermined threshold value, if do not reach predetermined threshold value, whether the process capability assessed value of then checking the every technological parameter in described current batch reaches predetermined threshold value, and the technological parameter implementation that does not reach predetermined threshold value is adjusted accordingly and control optimization.
Further, described multinomial technological parameter comprises: the outlet pipe tobacco moisture content of cut-tobacco drier, barrel pressure, discharging cover negative pressure, electric weigher flow, inlet pipe tobacco moisture content and hot blast temperature.
Further, add temporary in the process capability assessed value to described every technological parameter, the size of the weight of every technological parameter is by the rank order of outlet pipe tobacco moisture content, barrel pressure, discharging cover negative pressure, electric weigher flow, inlet pipe tobacco moisture content and hot blast temperature.
Further, the slope of curve difference of described process capability evaluation function in each segmentation span of process capability index, wherein the slope of curve of the less segmentation of span is greater than the slope of curve of the bigger segmentation of span.
Further, at the process capability index [0,0.83] slope of a curve that functional value fitted to of segmentation correspondence is higher than the process capability index (0.83,1.67] slope of a curve that functional value fitted to of segmentation correspondence, the process capability index is [0,1.67] slope of a curve that functional value fitted to of segmentation correspondence is positive number, when the process Capability index greater than 1.67, then Dui Ying functional value is the preset maximum value of process capability assessed value.
Further, the operation that calculates corresponding process capability index of described initial data according to technological parameter specifically comprises:
Calculate the average of described technological parameter and mark inclined to one side according to sampled value in the initial data of technological parameter and hits;
According to the average and the inclined to one side process capability and the process accuracy of calculating in the steady-state process of mark of described technological parameter, wherein said process capability is represented the discrete case that data distribute, and described process accuracy represents that the data overall distribution departs from situation in the steady-state process;
Calculate the process capability index according to process capability in the steady-state process and process accuracy.
Further, when batch process capability assessed value of calculating current batch, the process capability assessed value of described every technological parameter and the process capability assessed value of defective pipe tobacco time correspondence are weighted on average.
Further, add temporary in the process capability assessed value to described every technological parameter and defective pipe tobacco time, the size of the weight of every technological parameter is by the rank order of outlet pipe tobacco moisture content, barrel pressure, discharging cover negative pressure, defective pipe tobacco time, electric weigher flow, inlet pipe tobacco moisture content and hot blast temperature.
Further, the process capability assessed value of described defective pipe tobacco time correspondence draws by defective pipe tobacco time course merit rating function calculation, the defective pipe tobacco time at [A, B] time correspondence the slope of a curve that functional value fitted to be negative, when the defective pipe tobacco time greater than B, then Dui Ying functional value is the predetermined minimum of process capability assessed value, when the defective pipe tobacco time less than A, then Dui Ying functional value is the preset maximum value of process capability assessed value.
Further, the interval of time A is [0,200s], and the interval of time B is [150s, 500s].
Further, the summation of time, fracture time and the overproof time of process of the stub bar that in batch production process, produces for outlet pipe tobacco moisture content of described defective pipe tobacco time, material tail.
Further, the operation of the initial data of the multinomial technological parameter of described collection drying process specifically comprises:
When the electric weigher Seize ACK message occurs, and outlet pipe tobacco moisture content is not less than when presetting the pipe tobacco water cut value, described outlet pipe tobacco moisture content carried out current batch data sampling, and disappear at the electric weigher Seize ACK message, and after outlet pipe tobacco moisture content is lower than described default pipe tobacco water cut value, stop data sampling to described outlet pipe tobacco moisture content;
When the electric weigher Seize ACK message occurs, and when barrel pressure is not less than preset pressure value, perhaps behind the Preset Time when the electric weigher Seize ACK message occurs, described barrel pressure carried out current batch data sampling, and disappear at the electric weigher Seize ACK message, and after barrel pressure is lower than described preset pressure value, stop data sampling to described barrel pressure;
Behind the Preset Time when the electric weigher Seize ACK message occurs, described discharging cover negative pressure is carried out current batch data sampling, and behind the Preset Time when the electric weigher Seize ACK message disappears, stop data sampling described discharging cover negative pressure;
When the electric weigher Seize ACK message occurs, described electric weigher flow is carried out current batch data sampling, and when the electric weigher Seize ACK message disappears, stop data sampling described electric weigher flow;
When inlet pipe tobacco moisture content is not less than default inlet pipe tobacco water cut value, or behind the Preset Time when the electric weigher Seize ACK message occurs, described inlet pipe tobacco moisture content carried out current batch data sampling, and when inlet pipe tobacco moisture content is lower than default inlet pipe tobacco water cut value, stop data sampling to described inlet pipe tobacco moisture content;
Behind the Preset Time when the electric weigher Seize ACK message occurs, described hot blast temperature is carried out current batch data sampling, and behind the Preset Time when the electric weigher Seize ACK message disappears, stop data sampling described hot blast temperature.
Further, the acquisition operations of defective pipe tobacco time is specially:
When the electric weigher Seize ACK message occurs, outlet pipe tobacco moisture content is not less than the time of preset value to the default index lower limit of outlet pipe tobacco moisture content, and when the electric weigher Seize ACK message disappears, be limited to the time of described preset value under the default index of record outlet pipe tobacco moisture content, also comprise the time that the pipe tobacco moisture content leaves the positive and negative tolerance of default index that exports when the electric weigher Seize ACK message takies.
Further, above-mentioned preset value refers to the outlet pipe tobacco moisture content preset, is limited to the value that default index deducts franchise under the These parameters.
Based on technique scheme, the present invention has changed and existing a baking silk Evaluation on effect has been based on the method for the leaf silk of tobacco-dryer exit being determined its accordance in the mode of sampling inspection, but adopt the characteristic value deployment conditions of every technological parameter in the drying process is calculated, and obtain current batch batch process capability assessed value by average weighted mode, whether reach requirement by a batch process capability assessed value of judging current batch and come problem identificatioin batch, again the concrete technological parameter in the problem batch is reviewed, determine to exist in the technical process technological parameter of defective, thereby for the technical staff carries out the technology adjustment and controls to optimize providing foundation, result of the test to prove that also the present invention can reach the effect that improves the drying process process capability really.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 improves the schematic flow sheet of an embodiment of the method for drying process process capability for the present invention.
Fig. 2 improves the matched curve schematic diagram of process capability evaluation function among the method embodiment of drying process process capability for the present invention.
Fig. 3 improves defective pipe tobacco time course merit rating function fitting curve synoptic diagram among the method embodiment of drying process process capability for the present invention.
The specific embodiment
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
At first the term that relates among the present invention is provided definition.The process that is meant process capability satisfies the ability of specification requirement, specific to being meant on the operation that operation is in the actual working ability under the stable state, promptly guarantees the ability of product quality.Here the operation of indication is meant the process of five gross combined factors effects such as operator, machine, raw material, process and production environment, just the production process of product quality.Product quality is exactly the general performance of each qualitative factor role in the operation.For any production process, product quality always exists dispersedly.If the process capability of operation is high more, then the dispersion of product quality characteristics value will be more little; If the process capability of operation is low more, then the dispersion of product quality characteristics value will be big more.The process capability index is meant that operation is in the actual working ability under the stable state within a certain period of time.
The process capability assessed value be by the process capability index by the value that nonlinear model conversion draws, can determine whether technological parameter has problems according to the process capability assessed value, also can influence the degree of priority of each technological parameter in the optimizing process simultaneously.
Batch process capability assessed value is the value that the process capability assessed value by a plurality of technological parameters in certain batch draws by weighted average, by whether up to standard, by the also embodiment of conduct optimization effect of raising of this batch process capability assessed value with the process capability that relatively comes to determine this batch of predetermined threshold value.
As shown in Figure 1, improve the schematic flow sheet of an embodiment of the method for drying process process capability for the present invention.Present embodiment may further comprise the steps:
In the present embodiment, be example with more widely used drum-type drying process, selection of process parameters can be selected according to technical staff's needs, and determines the weight of each technological parameter correspondence in the influence degree of product quality according to each technological parameter.For instance, technological parameter can comprise: the outlet pipe tobacco moisture content of drum-type cut-tobacco drier, barrel pressure, discharging cover negative pressure, electric weigher flow, inlet pipe tobacco moisture content and hot blast temperature etc., but be not limited to above for example, the technical staff can add technological parameter or delete as required.
Add temporary in process capability assessed value every technological parameter, the size of the weight of every technological parameter (weight of permission technological parameter is identical) can sort according to importance, for example by outlet pipe tobacco moisture content, barrel pressure, discharging cover negative pressure, electric weigher flow, inlet pipe tobacco moisture content and the such rank order of hot blast temperature, when environment changes, the magnitude relationship of this weight may change, and can be carried out the adjustment of order by the technical staff as required.
When the initial data of the multinomial technological parameter of gathering the drum-type drying process, acquisition mode also can be adjusted as required by the technical staff, for example for the collection of the initial data of outlet pipe tobacco moisture content, can be when the electric weigher Seize ACK message occurs, and outlet pipe tobacco moisture content is not less than when presetting the pipe tobacco water cut value, to exporting the data sampling that the pipe tobacco moisture content carries out current batch, and disappear at the electric weigher Seize ACK message, and after outlet pipe tobacco moisture content is lower than described default pipe tobacco water cut value, stop data sampling to described outlet pipe tobacco moisture content.
Collection for the initial data of barrel pressure, can be when the electric weigher Seize ACK message occurs, and when barrel pressure is not less than preset pressure value, perhaps behind the Preset Time when the electric weigher Seize ACK message occurs, described barrel pressure carried out current batch data sampling, and disappear, and after barrel pressure is lower than described preset pressure value, stop data sampling to described barrel pressure at the electric weigher Seize ACK message.
Collection for the initial data of discharging cover negative pressure, after can the Preset Time when the electric weigher Seize ACK message occurs, described discharging cover negative pressure is carried out current batch data sampling, and behind the Preset Time when the electric weigher Seize ACK message disappears, stop data sampling described discharging cover negative pressure.
For the collection of the initial data of electric weigher flow, can when occur, the electric weigher Seize ACK message described electric weigher flow be carried out current batch data sampling, and when the electric weigher Seize ACK message disappears, stop data sampling described electric weigher flow.
Collection for the initial data of inlet pipe tobacco moisture content, can be when inlet pipe tobacco moisture content be not less than default inlet pipe tobacco water cut value, or behind the Preset Time when the electric weigher Seize ACK message occurs, described inlet pipe tobacco moisture content carried out current batch data sampling, and when inlet pipe tobacco moisture content is lower than default inlet pipe tobacco water cut value, stop data sampling to inlet pipe tobacco moisture content.
Collection for the initial data of hot blast temperature, after can the Preset Time when the electric weigher Seize ACK message occurs, described hot blast temperature is carried out current batch data sampling, and behind the Preset Time when the electric weigher Seize ACK message disappears, stop data sampling described hot blast temperature.
In the collection of the initial data of above-mentioned technological parameter, the Preset Time that relates to, preset value all can be provided with according to actual environment by the technical staff.
After the initial data that has obtained technological parameter, can convert these initial data to working ability under the stable state of this technological parameter under this batch, the process capability index of established technology parameter correspondence by calculating.
Outlet pipe tobacco moisture content with drying process is an example, and x is made as the sampled value of this technological parameter, and n is made as hits, at first calculates corresponding average and marks partially according to this sampled value x and hits n, and formula is as follows:
The mean value computation formula:
Mark inclined to one side computing formula:
According to average and and the inclined to one side process capability C that calculates in the steady-state process of mark
pWith process accuracy K, formula is as follows:
C
pComputing formula:
The K computing formula:
Wherein, process capability C
PThe discrete case that the expression data distribute, process accuracy K represents that the data overall distribution departs from situation in the steady-state process, T represents to allow maximum and allows the poor of minimum of a value, σ
SpecRepresent 1/3 franchise.
And then according to the process capability C in the steady-state process
PCalculate process capability index C with process accuracy K
Pk, formula is as follows:
C
PkComputing formula: Cpk=(1-K) * Cp
After obtaining the process capability index of each technological parameter, calculate corresponding process capability assessed value by process capability evaluation function default in the system, the slope of curve difference of this process capability evaluation function in each segmentation span of process capability index, wherein the slope of curve of the less segmentation of span is greater than the slope of curve of the bigger segmentation of span, this mainly be based on the process capability index hour adjust its increase rate of the process capability assessed value that can obtain bigger, and the increase rate of adjusting the process capability assessed value that its institute can obtain when the process capability index is big is less, and even tangible experience designs.
For example shown in Figure 2, the process capability index is [0,0.83] time correspondence the curve a that functional value fitted to, process capability index (0.83,1.67] time correspondence the slope of a curve b that functional value fitted to and when process Capability index functional value of correspondence greater than 1.67 time be the preset maximum value of process capability assessed value, it simulates the slope that is is zero straight line.
The process capability index is [0,0.83] time, because corresponding process capability assessed value is relatively poor, if improve, then may bring obvious effects, and the process capability index is (0.83,1.67] time, improvement effect is more not obvious, so the slope of curve a will be higher than the slope of curve b, the slope here refer to interval in the slope of each point.In addition, the slope of curve a and curve b is positive number, and expression process capability index, is proportionate with the process capability assessed value when interior in [0,1.67].
This process capability evaluation function can adopt first-order equation (performance is continuous a plurality of broken lines in the drawings), second-order equation or quadravalence equation, and the technical staff can select the equation of corresponding exponent number to carry out curve fitting according to the precision needs.The process capability assessed value that draws can be located at more easily by the data interval of identification, and for example [0,100] or [0,10] so also possesses certain intuitive.
After having obtained the process capability assessed value of each technological parameter, calculate batch process capability assessed value of this batch, the weighted average of the process capability assessed value of each technological parameter just, the setting of the weight of each technological parameter has been mentioned in the front will consider significance level.
Each batch all can calculate corresponding batch process capability assessed value, can be used as the benchmark of the processing quality of estimating this batch, by just getting information about the processing quality situation of this batch with the comparison of predetermined threshold value, for the poor quality batch, can be lower than preset level by the process capability assessed value that the mode of recalling is found out which technological parameter in this batch, just can be optimized adjustment to this technological parameter targetedly, this just provides very valuable guidance to the technical staff, and reduced the dependence that veteran technical staff is judged, reduce the man-hour that consumes, and the actual optimizing process of adjusting still can adopt existing more common adjustment mode, just can reach the purpose of optimization, with outlet pipe tobacco moisture content is example, if date back to the quality existing problems of certain batch outlet pipe tobacco moisture content, so the technical staff just can according to existing adjustment mode for example the air quantity of adjusting process air-flow wait and improve the quality that exports the pipe tobacco moisture content.
In drying process, unstable state part also can impact the process capability of reality, for example defective pipe tobacco time, promptly exports the summation of time, fracture time and the overproof time of process of stub bar that the pipe tobacco moisture content produces, material tail in batch production process.During this period of time, the implementation of technological parameter is in unstable state.For unstable state part is also listed in the defect location and process optimization of process capability, can utilize the defective pipe tobacco time course merit rating function of systemic presupposition to calculate the process capability assessed value of defective pipe tobacco time correspondence.
At first to carry out the acquisition operations of defective pipe tobacco time, this operation can be for when the electric weigher Seize ACK message occurs, outlet pipe tobacco moisture content is not less than the time of default pipe tobacco water cut value to the default index lower limit (promptly default index-franchise) of outlet pipe tobacco moisture content, and when the electric weigher Seize ACK message disappears, be limited to the time of described default pipe tobacco water cut value under the default index of record outlet pipe tobacco moisture content, comprise that also outlet pipe tobacco moisture content leaves the time of the positive and negative tolerance of default index.
Obtaining defective pipe tobacco after the time, can draw corresponding process capability assessed value by defective pipe tobacco time course merit rating function calculation, this process capability evaluation function also can simulate multistage broken line or curve at the functional value of the interval correspondence of defective pipe tobacco time, for example shown in Figure 3, the defective pipe tobacco time at [A, B] time correspondence the slope of a curve that functional value fitted to be negative, when the defective pipe tobacco time greater than B (for example 150s-500s), then Dui Ying functional value is the predetermined minimum of process capability assessed value, when the defective pipe tobacco time less than A (for example 0-200s), then Dui Ying functional value is the preset maximum value of process capability assessed value.This defective pipe tobacco time course merit rating function can adopt single order or second-order equation.
Only consider under the stable situation in front, weighted average calculation is only considered each technological parameter, and considered under the astable situation, the calculating that also will add the process capability assessed value of defective pipe tobacco time correspondence in the weighted average calculation, the process capability assessed value that is about to each technological parameter and defective pipe tobacco time correspondence is done weighted average together, obtains batch process capability assessed value of this batch.The weight of defective pipe tobacco time is selected between the weight value of expecting cover negative pressure and electric weigher flow (allowing identical with the weight of technological parameter).
Below by several groups of experimental datas the technique effect that the present invention realizes is described, in this experiment, the interval of process capability assessed value is [0,100], to make things convenient for the corresponding quality of technical staff's identification intuitively.
A plurality of batches of drying process (for example batches 114295,114359,114305) process capability assessed value is respectively 81.05,84.12,88.61, predetermined threshold value is 83, then can judge wherein batches 114295 process capability assessed value and not reach requirement, and then the pairing process capability assessed value of each technological parameter of transferring this batch 114295, the process capability assessed value of the outlet pipe tobacco moisture content correspondence of drying process is 69.77 in each technological parameter, also less than predetermined threshold value 83, at this moment the process capability assessed value that can also observe adjacent batch outlet pipe tobacco moisture content correspondence is 77.73, this has also proved the outlet pipe tobacco moisture content control existing problems in the drying process, needs the technical staff to adjust optimization targetedly.The technical staff can transfer the changing trend diagram of the outlet pipe tobacco moisture content in this problem batch, and the variation of the outlet pipe tobacco moisture content by analyzing each period comes the problem identificatioin position, so that make more accurate optimization.
Under the application of the inventive method, what the process capability assessed value surpassed predetermined threshold value 83 in the baking silk production in May, 2010 batch accounts for 73.71%, has improved 5.11% than the ratio 68.6% in April; June, the process capability assessed value accounted for 77.14% above the ratio of predetermined threshold value 83, had improved 3.43% than May; July, the process capability assessed value accounted for 90.86% above the ratio of predetermined threshold value 83, had improved 13.72% than June.Experimental results show that, the inventive method can improve baking silk technical process ability in actual applications really, and then the qualification rate of raising product output, and for the technical staff, simple to operate, do not need to go to guess defect parameters by rule of thumb, reduced the blindness of optimizing, also reduced dependence, enterprise has been raised the efficiency to reduce cost all can bring useful help veteran technical staff.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of programmed instruction, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
Should be noted that at last: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the field are to be understood that: still can make amendment or the part technical characterictic is equal to replacement the specific embodiment of the present invention; And not breaking away from the thinking of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope that the present invention asks for protection.
Claims (13)
1. method that improves the drying process process capability comprises:
Gather the initial data of the multinomial technological parameter of drying process;
Calculate the process capability index of every technological parameter respectively according to the initial data of described multinomial technological parameter;
According to default process capability evaluation function the process capability index of every technological parameter is changed, obtained the process capability assessed value of every technological parameter;
Process capability assessed value to described every technological parameter is weighted on average, obtains current batch batch process capability assessed value;
Judge whether a described current batch batch process capability assessed value reaches predetermined threshold value, if do not reach predetermined threshold value, whether the process capability assessed value of then checking the every technological parameter in described current batch reaches predetermined threshold value, and the technological parameter that does not reach predetermined threshold value is carried out the adjustment operation.
2. method according to claim 1, wherein said multinomial technological parameter comprises: the outlet pipe tobacco moisture content of cut-tobacco drier, barrel pressure, discharging cover negative pressure, electric weigher flow, inlet pipe tobacco moisture content and hot blast temperature.
3. method according to claim 2, wherein add temporary in the process capability assessed value to described every technological parameter, the size of the weight of every technological parameter is by the rank order of outlet pipe tobacco moisture content, barrel pressure, discharging cover negative pressure, electric weigher flow, inlet pipe tobacco moisture content and hot blast temperature.
4. method according to claim 1, the slope of curve difference of wherein said process capability evaluation function in each segmentation span of process capability index, wherein the slope of curve of the less segmentation of span is greater than the slope of curve of the bigger segmentation of span.
5. method according to claim 4, wherein at the process capability index [0,0.83] slope of a curve that functional value fitted to of segmentation correspondence is higher than the process capability index (0.83,1.67] slope of a curve that functional value fitted to of segmentation correspondence, the process capability index is [0,1.67] slope of a curve that functional value fitted to of segmentation correspondence is positive number, when the process Capability index greater than 1.67, then Dui Ying functional value is the preset maximum value of process capability assessed value.
6. the operation that method according to claim 1, wherein said initial data according to technological parameter calculate corresponding process capability index specifically comprises:
Calculate the average of described technological parameter and mark inclined to one side according to sampled value in the initial data of technological parameter and hits;
According to the average and the inclined to one side process capability and the process accuracy of calculating in the steady-state process of mark of described technological parameter, wherein said process capability is represented the discrete case that data distribute, and described process accuracy represents that the data overall distribution departs from situation in the steady-state process;
Calculate the process capability index according to process capability in the steady-state process and process accuracy.
7. method according to claim 3 wherein when batch process capability assessed value of calculating current batch, is weighted on average the process capability assessed value of described every technological parameter and the process capability assessed value of defective pipe tobacco time correspondence.
8. method according to claim 7, wherein add temporary in the process capability assessed value to described every technological parameter and defective pipe tobacco time, the size of the weight of every technological parameter is by the rank order of outlet pipe tobacco moisture content, barrel pressure, discharging cover negative pressure, defective pipe tobacco time, electric weigher flow, inlet pipe tobacco moisture content and hot blast temperature.
9. according to claim 7 or 8 described methods, the process capability assessed value of wherein said defective pipe tobacco time correspondence draws by defective pipe tobacco time course merit rating function calculation, the defective pipe tobacco time at [A, B] time correspondence the slope of a curve that functional value fitted to be negative, when the defective pipe tobacco time greater than B, then Dui Ying functional value is the predetermined minimum of process capability assessed value, when the defective pipe tobacco time less than A, then Dui Ying functional value is the preset maximum value of process capability assessed value.
10. method according to claim 9, wherein the interval of time A is [0,200s], the interval of time B is [150s, 500s].
11. according to claim 7 or 8 described methods, the stub bar that the wherein said defective pipe tobacco time produces in batch production process for outlet pipe tobacco moisture content, the summation of time, fracture time and the overproof time of process of material tail.
12. method according to claim 1, the operation of the initial data of the multinomial technological parameter of wherein said collection drying process specifically comprises:
When the electric weigher Seize ACK message occurs, and outlet pipe tobacco moisture content is not less than when presetting the pipe tobacco water cut value, described outlet pipe tobacco moisture content carried out current batch data sampling, and disappear at the electric weigher Seize ACK message, and after outlet pipe tobacco moisture content is lower than described default pipe tobacco water cut value, stop data sampling to described outlet pipe tobacco moisture content;
When the electric weigher Seize ACK message occurs, and barrel pressure be not less than preset pressure value the time, perhaps behind the Preset Time when the electric weigher Seize ACK message occurs, described barrel pressure carried out current batch data sampling, and disappear at the electric weigher Seize ACK message, and after barrel pressure is lower than described preset pressure value, stop data sampling to described barrel pressure;
Behind the Preset Time when the electric weigher Seize ACK message occurs, described discharging cover negative pressure is carried out current batch data sampling, and behind the Preset Time when the electric weigher Seize ACK message disappears, stop data sampling described discharging cover negative pressure;
When the electric weigher Seize ACK message occurs, described electric weigher flow is carried out current batch data sampling, and when the electric weigher Seize ACK message disappears, stop data sampling described electric weigher flow;
When inlet pipe tobacco moisture content is not less than default inlet pipe tobacco water cut value, or behind the Preset Time when the electric weigher Seize ACK message occurs, described inlet pipe tobacco moisture content carried out current batch data sampling, and when inlet pipe tobacco moisture content is lower than default inlet pipe tobacco water cut value, stop data sampling to described inlet pipe tobacco moisture content;
Behind the Preset Time when the electric weigher Seize ACK message occurs, described hot blast temperature is carried out current batch data sampling, and behind the Preset Time when the electric weigher Seize ACK message disappears, stop data sampling described hot blast temperature.
13. method according to claim 11, the acquisition operations of wherein defective pipe tobacco time is specially:
When the electric weigher Seize ACK message occurs, outlet pipe tobacco moisture content is not less than the time of default pipe tobacco water cut value to the default index lower limit of outlet pipe tobacco moisture content, and when the electric weigher Seize ACK message disappears, be limited to the time of described default pipe tobacco water cut value under the default index of record outlet pipe tobacco moisture content, also comprise the time that the pipe tobacco moisture content leaves the positive and negative tolerance of default index that exports when the electric weigher Seize ACK message takies.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102240063A (en) * | 2011-06-23 | 2011-11-16 | 陕西中烟工业有限责任公司 | Method for stabilizing parameters of annular shred dryer through parallel translation of water ratio |
| CN103324089A (en) * | 2012-03-24 | 2013-09-25 | 厦门烟草工业有限责任公司 | Thread making technological parameter dynamic quality stability characterization method |
| CN103610227A (en) * | 2013-12-09 | 2014-03-05 | 中南大学 | Cut tobacco dryer head and tail section process variable optimizing control method |
| CN104152625A (en) * | 2014-08-27 | 2014-11-19 | 中冶南方工程技术有限公司 | An oxygen lance deceleration shutoff control method and device |
| CN105707974A (en) * | 2015-12-30 | 2016-06-29 | 河南中烟工业有限责任公司 | Cigarette production process stability monitoring method |
| CN106773657A (en) * | 2017-03-28 | 2017-05-31 | 中国烟草总公司郑州烟草研究院 | A kind of roller drying unstable state process head material and the optimising and adjustment method in tailing stage |
| CN108154302A (en) * | 2017-12-25 | 2018-06-12 | 陈益德 | A kind of intelligence manufacture assessment management system |
| CN109754137A (en) * | 2017-11-03 | 2019-05-14 | 钢铁研究总院 | Determine the quality of steel material product and/or the method and apparatus of grade |
| CN109902900A (en) * | 2017-12-11 | 2019-06-18 | 红塔烟草(集团)有限责任公司 | A kind of process capability assessment method based on the production of full leaf beating and double roasting |
| CN109902898A (en) * | 2017-12-11 | 2019-06-18 | 红塔烟草(集团)有限责任公司 | It is a kind of based on the process capability assessment method for cutting the production of sharp beating and double roasting |
| CN110263980A (en) * | 2019-05-29 | 2019-09-20 | 浙江陀曼云计算有限公司 | Produce method for early warning and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102240063A (en) * | 2011-06-23 | 2011-11-16 | 陕西中烟工业有限责任公司 | Method for stabilizing parameters of annular shred dryer through parallel translation of water ratio |
| CN102240063B (en) * | 2011-06-23 | 2013-08-07 | 陕西中烟工业有限责任公司 | Method for stabilizing parameters of annular shred dryer through parallel translation of water ratio |
| CN103324089A (en) * | 2012-03-24 | 2013-09-25 | 厦门烟草工业有限责任公司 | Thread making technological parameter dynamic quality stability characterization method |
| CN103610227A (en) * | 2013-12-09 | 2014-03-05 | 中南大学 | Cut tobacco dryer head and tail section process variable optimizing control method |
| CN103610227B (en) * | 2013-12-09 | 2015-04-15 | 中南大学 | Cut tobacco dryer head and tail section process variable optimizing control method |
| CN104152625A (en) * | 2014-08-27 | 2014-11-19 | 中冶南方工程技术有限公司 | An oxygen lance deceleration shutoff control method and device |
| CN104152625B (en) * | 2014-08-27 | 2016-06-01 | 中冶南方工程技术有限公司 | A kind of oxygen rifle ramp to stop control method and device |
| CN105707974A (en) * | 2015-12-30 | 2016-06-29 | 河南中烟工业有限责任公司 | Cigarette production process stability monitoring method |
| CN106773657A (en) * | 2017-03-28 | 2017-05-31 | 中国烟草总公司郑州烟草研究院 | A kind of roller drying unstable state process head material and the optimising and adjustment method in tailing stage |
| CN106773657B (en) * | 2017-03-28 | 2019-08-09 | 中国烟草总公司郑州烟草研究院 | A kind of optimising and adjustment method of roller drying unstable state process head material and tailing stage |
| CN109754137A (en) * | 2017-11-03 | 2019-05-14 | 钢铁研究总院 | Determine the quality of steel material product and/or the method and apparatus of grade |
| US11209414B2 (en) | 2017-11-03 | 2021-12-28 | Central Iron And Steel Research Institute | Method for determining quality level of iron and steel product |
| CN109902900A (en) * | 2017-12-11 | 2019-06-18 | 红塔烟草(集团)有限责任公司 | A kind of process capability assessment method based on the production of full leaf beating and double roasting |
| CN109902898A (en) * | 2017-12-11 | 2019-06-18 | 红塔烟草(集团)有限责任公司 | It is a kind of based on the process capability assessment method for cutting the production of sharp beating and double roasting |
| CN108154302A (en) * | 2017-12-25 | 2018-06-12 | 陈益德 | A kind of intelligence manufacture assessment management system |
| CN110263980A (en) * | 2019-05-29 | 2019-09-20 | 浙江陀曼云计算有限公司 | Produce method for early warning and device |
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