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Production scheduling method based on distributed set robust parallel machine scheduling model

A technology that integrates robust parallel machines and scheduling models. It is applied in robust scheduling schemes and production scheduling based on distribution-set robust parallel machine scheduling models. It can solve problems such as sacrificing system performance, conservatism, and increased difficulty of random scheduling models.

Active Publication Date: 2018-01-23
TSINGHUA UNIV
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Problems solved by technology

3) The solution of this kind of random scheduling model is usually NP-difficult, and generally can only be solved by heuristic algorithm or dynamic programming algorithm. As the scale of the problem gradually expands, the difficulty of solving the random scheduling model will increase exponentially
However, because only the boundary information of the variable range of uncertain parameters is used, and the system performance in the worst case is mainly considered, the decision obtained by this robust scheduling model based on the uncertainty set may be too conservative, sacrificing the parameter System performance under normal conditions

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  • Production scheduling method based on distributed set robust parallel machine scheduling model
  • Production scheduling method based on distributed set robust parallel machine scheduling model
  • Production scheduling method based on distributed set robust parallel machine scheduling model

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Embodiment Construction

[0100] A distributed set robust parallel machine scheduling modeling method with risk aversion characteristics proposed by the present invention will be further described in detail below in conjunction with specific embodiments.

[0101] A kind of production scheduling method based on the distributed set robust parallel machine scheduling model proposed by the present invention comprises the following steps:

[0102] 1) Aiming at the same-type parallel machine scheduling problem, construct a distribution set robust optimization model DR-PMSP-RA with risk aversion characteristics, and obtain the expression of the initial model DR-PMSP-RA1;

[0103] The present invention focuses on the same-type parallel machine scheduling problem with random processing time, and establishes a distribution set robust optimization model (DR-PMSP-RA) with risk aversion characteristics for this problem. In the same-type parallel machine scheduling problem, all jobs can be processed on any machine, ...

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Abstract

The invention, which belongs to the field of production scheduling and operations research, provides a production scheduling method based on a distributed set robust parallel machine scheduling model.According to the method, a distributed set robust optimization model DR-PMSP-RA having a risk aversion characteristic is constructed; on the basis of an objective function and a constraint conditionof the model, an expression of an initial model DR-PMSP-RA1 is obtained; the objective function of the DR-PMSP-RA model is transformed to obtain an estimation upper bound of the objective function, the initial model is transformed into an estimation model DR-PMSP-RA2, wherein the estimation model can be decomposed into two independent sub models, the two sub models are solved and the optimal sub model solution is an optimal solution of the model, and thus an optimal production scheduling plan is obtained. The model established based on the method conforms to the actual production situation well; and with information in a production environment, the decision-making risk is reduced under the circumstance that the system performance is guaranteed.

Description

technical field [0001] The invention belongs to the fields of production scheduling and operations research, and in particular relates to a production scheduling method based on a distribution-set robust parallel machine scheduling model, which seeks a robust scheduling scheme with the least risk when the workpiece processing time has random uncertainty . Background technique [0002] The manufacturing industry occupies a very important position in the development of our country's national economy, and its development directly affects our country's comprehensive strength. Production scheduling is an important key technology in the manufacturing system, which aims to ensure that the manufacturing process is carried out efficiently and orderly. Designing a reasonable planning and scheduling strategy for the production process can effectively shorten the production cycle of products, increase the rate of on-time delivery, improve equipment utilization and reduce inventory. ...

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Application Information

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IPC IPC(8): G06Q10/06G06F17/15G06F17/16
Inventor 宋士吉常志琦
Owner TSINGHUA UNIV
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