Improved preventive maintenance and mean value control chart combined economic optimization method

Abstract

The invention relates to an improved preventive maintenance and mean value control chart combined economic optimization method, and provides an improved process quality control chart and preventive maintenance combined design optimization method on the basis of considering that the early failure probability of equipment is low, and the method comprises the following steps: 1, analyzing historicaldata; step 2, establishing a unit time cost function ECT by taking minimization as a target according to the abnormal condition of the system; 3, constructing an empire competition optimization algorithm according to the model, and verifying the effectiveness of the model by adopting a Matlab language and combining the production process of a certain mold manufacturing enterprise; 4, performing sensitivity analysis on the model by adopting an orthogonal test design and regression analysis method, and explaining different influences of model parameters on a target function. Due to the fact thata control chart detection point is delayed to a certain preset time point, for a system with a relatively low early hazard rate in a production process, and compared with a system model which initially implements control chart monitoring in system operation, the model of the invention can obtain better economic performance.

Description

technical field [0001] The invention relates to the technical field of system optimization, in particular to an improved combined economic optimization method of preventive maintenance and mean value control chart. Background technique [0002] In the production process, preventive maintenance can reduce the occurrence of maintenance failures and ensure the reliability and availability of the production process, while statistical process control also plays an important role in improving product quality and reducing production costs. The joint optimization of the two is more effective in improving the economic efficiency of the production system than only using a single measure, so it is also one of the main research directions in the field of production quality economics. [0003] In the previous research on the integration of preventive maintenance and control charts, it mainly focused on the types of control charts, dynamic and static control charts, etc., ignoring the fac...

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Problems solved by technology

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides an improved process quality mean value control chart and preventive maintenance joint design optimization method, which solves the process quality control chart and preventive maintenance joint optimization of the system with low early hazard rate in the production process question

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