Parallel scheduling disassembly path forming method based on mixing fuzzy model

A path generation and fuzzy model technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problem that the processing time is not an accurate value, etc.

Inactive Publication Date: 2016-09-28
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a parallel scheduling disassembly path generation method based on a mixed fuzzy model, aiming at solving the problem that the disassembly process is affected by various uncertain factors in the actual situation, and the processing time of each disassembly process is within a certain range. Fluctuations within a certain range rather than precise values, and the complex mechanical equipment is usually coordinated at multiple stations in the actual disassembly process, that is, the problem of parallel disassembly

Method used

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  • Parallel scheduling disassembly path forming method based on mixing fuzzy model
  • Parallel scheduling disassembly path forming method based on mixing fuzzy model
  • Parallel scheduling disassembly path forming method based on mixing fuzzy model

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0111] Embodiment 1 is a specific embodiment for step 3:

[0112] 1) Mixed coding of procedures and stations under disassembly requirements

[0113] For example, for the mixed coding of the dismantling process and work station, for example, the code of an individual is: 1, 3, 4, 2, 4, 1, 3, 2, 1, 4, 1, 2 | 2, 5, 3 , 3, 1, 4, 2, 5, 4, 2, 1, 5, the process and station information is shown in Table 4, which includes 4 parts and 5 stations. The correspondence table between parts and stations is shown in Table 5:

[0114] Table 4 Decomposition table of a mixed coding individual process and station information

[0115]

[0116] Table 5 Correspondence between parts and stations

[0117]

[0118] 2) Establish a fitness function according to the optimization objective, and assign an initial value to the fitness;

[0119] 3) Carry out selection operation, crossover operation and mutation operation on the population.

[0120] population selection

[0121] The roulette method ...

Embodiment 2

[0132] Embodiment 2 is specifically described in conjunction with the disassembly process of a certain type of hydraulic press, and the specific steps are as follows:

[0133] Step 1: Summarize the disassembly process of a certain type of hydraulic press. Explosion diagram of hydraulic press figure 2 , This type of hydraulic machine contains a total of 7 main structural components 1. Column; 2. Upper beam; 3. Oil cylinder; 4. Stamping slider; All disassembly processes are completed on 10 optional stations, and the disassembly process of each component is less than or equal to 6 steps.

[0134] Step 2: According to the historical data of a certain disassembly workshop, the list of optional stations corresponding to all parts disassembly processes is given, as shown in Table 6:

[0135] Table 6 Each process corresponds to an optional station

[0136]

[0137] Step 3, according to the historical data of the dismantling workshop, the triangular fuzzy number set of the disma...

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Abstract

The invention discloses a parallel scheduling disassembly path forming method based on a mixing fuzzy model; the method comprises the following steps: building a fuzzy time scheduling disassembly process model, and deriving a fuzzy boundary and detachable constraint conditions; hybrid coding the disassembly sequence of all parts on stations and station sequence numbers of each disassembly step; using an improved heredity algorithm to optimize so as to obtain the minimum time and cost. The method can solve fuzzy time complex equipment parallel disassembly path forming and disassembly station scheduling optimization problems, thus shortening disassembly process time and reducing disassembly cost, improving production efficiency, introducing the gauss function into optimization solving, improving variation operation quality, accelerating convergence speed, and obtaining a better result.

Description

technical field [0001] The invention relates to the field of mechanical engineering and computer application technology. More specifically, it relates to a hybrid fuzzy model-based method for parallel scheduling disassembly path generation. Background technique [0002] As the contradiction of environmental protection needs becomes increasingly prominent in production and life, the dismantling, recycling and reuse of products has become an important issue we are facing. Due to the needs of maintenance, testing, and recycling, products inevitably face disassembly problems during their life cycle. Complex products contain a large number of parts, and the assembly relationship is also relatively diverse and complicated, often requiring the cooperation of multiple stations and a large amount of manpower. Therefore, parallel disassembly can improve disassembly processing efficiency and optimize resource allocation. [0003] At present, many domestic and foreign scholars have co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/17
Inventor 冯毅雄卢润洁张志峰
Owner ZHEJIANG UNIV
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