A multi-fidelity simulation optimization method and equipment applied to workshop planning and production

Abstract

The invention belongs to the technical field of production control, and in particular relates to a multi-fidelity simulation optimization method and equipment applied to workshop planning and production. This method optimizes the problem of workshop planning and production by using two fidelity levels of simulation models: first, a high-fidelity and low-fidelity simulation model is established based on the actual production system; then a low-fidelity simulation model is used, combined with the optimization iteration of the GA algorithm Search the solution space of the production planning problem; use the sampling method with ordinal transformation and optimal sampling to sample according to the results obtained by running the low-fidelity model to obtain the optimal sampling set; finally run the optimal sampling through the high-fidelity simulation model Since the high-fidelity model is very similar to the actual production system of the workshop, using the high-fidelity model to run the production plan in the optimal sampling set can obtain relatively accurate results, so this result can be used as a basis to select the optimal production plan.

Description

technical field [0001] The invention belongs to the field of production control, and relates to a multi-fidelity simulation optimization method and equipment applied to workshop planning and production, more particularly, to a DBR theory-based multi-fidelity simulation optimization method applied to workshop planning and production. Background technique [0002] Making a reasonable production plan can make workshop processing smoother and make full use of workshop resources. Taking the problem of workshop production planning as an example, an inappropriate workpiece production plan may cause workshop processing blockage or a large number of idle machines. Therefore, optimizing the workshop production plan can improve processing efficiency. Because the production process of the production system is irreversible, the workshop managers often use the simulation method to judge the feasibility of the plan before executing the production decision, and even find the optimal solutio...

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Problems solved by technology

[0006] In view of the above defects or improvement needs of the prior art, the present invention provides a multi-fidelity simulation optimization method applied to workshop planning and production, and its purpose is to use the simulation optimization method based on multi-fidelity simulation model to optimize the production planning of workshop products , so as to solve the technical problem that the actual production workshop product launch plan is only formulated based on the experience of managers

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