CN102938102B - A kind of with batch processor across operation unit dispatching method - Google Patents
A kind of with batch processor across operation unit dispatching method Download PDFInfo
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- CN102938102B CN102938102B CN201210398621.0A CN201210398621A CN102938102B CN 102938102 B CN102938102 B CN 102938102B CN 201210398621 A CN201210398621 A CN 201210398621A CN 102938102 B CN102938102 B CN 102938102B
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Abstract
Description
Parameter | Scope |
β1=β2 | (0.2,0.5,1,2) |
β3 | (0.01,0.1,0.5,1) |
Q/τ_max | (0.1,0.2,0.4) |
ρ | (0.1,0.2,0.4) |
Parameter | Span | Recommended value |
α1=α2=α3 | 1 | 1 |
β1=β2 | (0,4) | 2 |
β3 | (0,4) | 0.01 |
ρ | (0,1) | 0.2 |
τ_max | (1,10) | 5 |
Q | (0,τ_max) | 0.2*τ_max |
Claims (2)
- With batch processor across an operation unit dispatching method, comprise the following steps:The 1st step: be defined as follows the index shown in table and variable:Table 1 index and variableMeanwhile, the pheromones of three kinds of different structures of definition:A) the pheromones structure in operation assignmentSelect in the process of machine in operation, the matrix that defines O × M size represents pheromones, and wherein O represents that operation is totalNumber, M represents machine sum, the element (O in matrixij, k) represent operation OijOn machine k, process corresponding pheromone concentration;B) the pheromones structure in Operation SequencingWhen Operation Sequencing on every machine, the matrix that defines M O × O size represents pheromones, and wherein O represents operationSum, the element (O in m matrixij, k) represent the upper operation O of machine mijK the pheromones that processing is corresponding on this machineConcentration;C) the pheromones structure in batch processor operation batchingIn the process of batch processing operation batching, the matrix of definition N × N size represents pheromones, and wherein N represents that part is totalNumber, element (i, j) represents that part i and part j are at same batch of corresponding pheromone concentration;Select a part to add existing batch at every turn from optional parts list when batch processing operation batching, and batch number withoutMethod is determined, therefore there is definition shown in formula (1):Wherein, τi,bRepresent part i to add the pheromone concentration that batch b is corresponding, τi,kRepresent that part i and part k are with a collection ofThe pheromone concentration of inferior correspondence, | Bb| represent BbIn existing part number; If represent, batch b is not empty to formula (1), and part i addsEnter pheromone concentration that batch b is corresponding and be part i respectively with batch b in existing part the pheromone concentration of same batch itWith, otherwise be definite value 1;The 2nd step:Initialize part sum and each part of transfer distance, palpus processing between input machine information, dividing elements, unitTechnique information, then according to following explanation initialization information element:A) initialize the pheromones in operation assignmentWherein, τi,j,mRepresent operation oijOn machine m, process corresponding pheromone concentration, ε is pheromone concentration initial value, is decided to be0.01;B) initialize the pheromones in Operation SequencingWherein, τ on machine mm,i,j,kRepresent operation oijAt k the pheromone concentration that processing is corresponding, ε is pheromone concentrationInitial value, is decided to be 0.01;C) initialize the batch processor operation pheromones in batchesWherein, τi,kRepresent that part i and part k process corresponding pheromone concentration on same batch, at the beginning of ε is pheromone concentrationInitial value, is decided to be 0.01;The 3rd step:According to processing sequence, the every procedure before the batch processing operation of each part is assigned to machine, for each zeroPart is followed successively by the selected processing machine of every procedure according to the processing sequence of operation, and every selected probability of machine is:Wherein, Pri,j,mRepresent operation oijThe probability of processing on machine m, ρi,j,kRepresent corresponding heuristic information, α1、β1PointDo not represent pheromone concentration, the shared weight of heuristic information;Due to considered part across unit transfer time, therefore ρi,j,kBe defined as follows:Wherein, Pi,j,kRepresent oijProcess time on machine k, TTiDm′,kRepresent part i unit distance Yu Qian transfer time roadThe machine m ' of operation processing is long-pending to the transfer distance of machine k, i.e. transfer time corresponding to part i; By heuristic information formulaCan find out preferential Choice and process time and the less machine of sum transfer time in the time that operation is assigned;Obtain after probability that operation processes on every optional machine, with roulette algorithm, selected certain machining should at randomOperation;The 4th step:According to time sequencing, by the per pass Operation Sequencing on each machine, on the basis of assigning in operation, determine every machineProcessing sequencing and the initial time of upper operation; Concrete grammar is:For every machine, can dispatch operation from it, according to probability shown in following formula, select one so that roulette algorithm is randomProcedure is arranged in next processing; Repeat this process, until all process steps is all scheduled;Wherein, Prm,i,j,kRepresent the upper O of machine mijAt the probability of k processing, ρm,i,j,lRepresent corresponding heuristic information, α2、β2Represent respectively pheromone concentration, the shared weight of heuristic information;The heuristic information of Job Scheduling has considered the time across unit transfer time and machine of part, the while zeroThe time across unit transfer time and machine of part in fact can be overlapping, in the transfer process of part, rightThe machine of answering can start to prepare for processing this part, therefore heuristic information defines suc as formula shown in (8):Wherein, fi,j-1Represent the time of the j-1 procedure process finishing of part i, Dm′,mRepresent one work from processing partsThe machine m ' of order is to the transfer distance of machine m, li,jFor part family: l under the part of previous processing on marking machinei,j=0 represent part i on machine on first processing or machine part and the part i of previous processing belong to Same Part family, li,j=1 represents that part and the part i of previous processing on machine do not belong to Same Part family, TEm,i,jRepresent the upper O of machine mijBeforeThe finish time of one procedure, max (fi,j-1+TTiDi,j,m,TEm,i,j+li,jSTi,m)-TEm,i,jRepresent a procedure knot in the pastBundle is to oijStart the real time of machining cost; From heuristic information formula, in the time of Operation Sequencing, priority scheduling can be comparativelyEarly start the operation of processing;In Operation Sequencing process, for any machine, it can dispatch operation is to be assigned in the operation of this machine, arbitraryThe set of the operation that the first operation of part or last procedure have been sorted;The 5th step:By part batching, scheduling batch processing operation, i.e. the batch processing operation of which part is placed on the same of batch processor by decision-makingBatch process, concrete grammar is:Step1. select the time of advent of part the earliest, add this batch;Step2. upgrade candidate's part collection, candidate's part collection is defined as: if b is arbitrary batch, its candidate's part collection be withLower set:Be candidate's part collection of arbitrary batch, can not make with part Same Part family wherein and after adding this batch batch for allThe total size of middle part exceedes the set of the part of batch processor capacity or batch waste and free space increase;For a batch of b of batch processor, the waste of b and free space WISbFor this batch of wasting space WSbAnd free spaceISbSum, Δ WISbFor the waste of batch b and the variable quantity of free space; For the scheduling solution S of a batch processing operation, WIS(S) represent waste and the free space of S, equal the waste of all batches and the free space sum of S; The wasting space of batch bWSbWith free space ISbBe defined as follows:ISb=CB·(BSb-BEb-1)(11)Wherein, BSb,BEbRepresent respectively the start and end time of batch b, Pi,mFor the batch processing operation process time of part i,And in the time of b=0, make BEb-1For initial time,Therefore have:Step3. concentrate the selected probability of part according to following formula calculated candidate part, then select it with roulette algorithmIn a part add this batch;Wherein, α3、β3Represent respectively pheromone concentration, the shared weight of heuristic information, Pri,bRepresent that part i adds that batch b's is generalRate,ΔWSi,b=WSb‘-WSb=CB·(Pb‘-Pb)-SiPi,m(15)B ' representative batch b add after part i batch, WSb‘Represent to add the wasting space of batch b ' after part i;If Step4. candidate's part collection is not empty, goes to Step2, otherwise continue to carry out Step5;If Step5. also have not yet batching of part, go to Step1, continue to set up next batch, otherwise finish;The 6th step:According to processing sequence, the every procedure after the batch processing operation of each part is assigned to machine, method is with the 3rd step;The 7th step:According to time sequencing, by the per pass Operation Sequencing on each machine, method is with the 4th step;The 8th step:According to the solution forming, lastest imformation element, update rule is:For in optimal solution set, each is separated,If a) operation OijBe assigned to machine m,τi,j,m=(1-ρ)·τi,j,m+ρ·ΔτIf b) operation OijK processing on machine m,τm,i,j,k=(1-ρ)·τm,i,j,k+ρ·ΔτIf c) part i adds a batch b,Wherein, τi,kRepresent that part i adds pheromone concentration corresponding to man-hour on same batch with part k, ρ represents that pheromones wavesThe rate of sending out, Δ τ is pheromones renewal amount:Q is pheromones renewal amount factor of influence, γ1,γ2,γ3Be the weights of three optimization aim, represent respectively three optimizationsTarget: the attention journey of stand-by period between maximum completion date, batch processor utilization rate, non-batch processing operation and batch processing operationDegree, and γ1+γ2+γ3=1,Represent respectively total completion date of this scheduling solution, batch processor profitBy rate, the ratio of total waiting time and current optimal solution between non-batch processing operation and batch processing operation;The 9th step:If cycle-index reaches the upper limit, or several times optimal solution is unchanged continuously, finishes; Otherwise, turn the 2nd step;In above step, the scope that arranges of customer parameter is:
Parameter Span α1=α2=α3 1 β1=β2 (0,4) β3 (0,4) ρ (0,1) τ_max (1,10) Q (0,τ_max) τ _ max is a default definite value, and it has limited the maximum of pheromone concentration. - According to claim 1 a kind of with batch processor across operation unit dispatching method, it is characterized in that, according toCustomer parameter is set shown in following table:
Parameter Recommended value α1=α2=α3 1 β1=β2 2 β3 0.01 ρ 0.2 τ_max 5 Q 0.2*τ_max
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CN103699105B (en) * | 2013-12-30 | 2016-09-07 | 北京施达优技术有限公司 | The data processing method of production scheduling and device |
CN104700157B (en) * | 2015-02-03 | 2018-10-09 | 北京理工大学 | A kind of across unit work piece production method for searching path considering that transport capacity is limited |
CN105354695A (en) * | 2015-11-24 | 2016-02-24 | 北京首钢自动化信息技术有限公司 | Energy flow and material flow coordinated planning and compiling method for cold mill |
CN105700495B (en) * | 2016-01-13 | 2018-02-23 | 济南大学 | Flexible job shop scheduling machine choice method based on process time grade |
CN106228265B (en) * | 2016-07-18 | 2019-12-03 | 中山大学 | Phase transport project dispatching method is always dragged based on Modified particle swarm optimization |
CN106971235B (en) * | 2017-02-16 | 2021-07-06 | 上海大学 | Flexible job shop batch optimization scheduling method with intermediate storage constraint |
CN107133703A (en) * | 2017-06-01 | 2017-09-05 | 合肥工业大学 | A kind of online batch processing method of incompatible workpiece group based on requirement drive |
CN110046777B (en) * | 2018-01-17 | 2020-12-29 | 北京理工大学 | Continuous reconfiguration scheduling method and device for flexible job shop |
CN109447408B (en) * | 2018-09-21 | 2021-07-02 | 华中科技大学 | Cross-unit scheduling method based on complex network theory |
CN109409763B (en) * | 2018-11-08 | 2021-03-12 | 北京航空航天大学 | Dynamic test task scheduling method and scheduling platform based on greedy grouping strategy |
CN111260144B (en) * | 2020-01-20 | 2022-03-29 | 合肥工业大学 | Method for solving single-machine batch scheduling problem under condition of random arrival of different workpieces |
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