Multi-fidelity simulation optimization method and equipment applied to workshop planned production

Abstract

The invention belongs to the technical field of production control, and particularly relates to a multi-fidelity simulation optimization method and device applied to workshop planned production. According to the method, two fidelity-level simulation models are used in cooperation to optimize a workshop planned production problem: firstly, a high-fidelity simulation model and a low-fidelity simulation model are established according to an actual production system; then searching a solution space of the production plan problem by using a low-fidelity simulation model in combination with optimization iterative characteristics of a GA algorithm; sampling by using a sampling method with ordinal number transformation and optimal sampling according to a result obtained by running the low-fidelitymodel to obtain an optimal sampling set; finally, the optimal sampling set is operated through the high-fidelity simulation model, due to the fact that the similarity between the high-fidelity modeland a workshop actual production system is extremely high, a relatively accurate result can be obtained by using the high-fidelity model to operate the production scheme in the optimal sampling set, and therefore the result can serve as the basis to select the optimal production scheme.

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 commissioning, more specifically, to a multi-fidelity simulation optimization method based on DBR theory and applying to workshop planning and commissioning. Background technique

[0002] Making a reasonable production plan can make the workshop process smoother and make full use of workshop resources. Taking the production planning problem of the workshop as an example, an inappropriate workpiece production plan may lead to processing blockage in the workshop or a large number of idle machines. Therefore, optimizing the production planning of the workshop can improve processing efficiency. Due to the irreversibility of the production process of the production system, workshop managers often use simulation methods to judge the feasibility of the scheme before implementing production deci...

Images