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Preventive maintenance method based on continuous time MDP model

A technology of preventive maintenance and time, applied in forecasting, instrumentation, technology management, etc.

Inactive Publication Date: 2016-08-03
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in actual maintenance, the transfer of equipment status is random, that is, after a certain maintenance plan is implemented on the equipment at a certain moment, its status transfer is random.

Method used

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  • Preventive maintenance method based on continuous time MDP model
  • Preventive maintenance method based on continuous time MDP model
  • Preventive maintenance method based on continuous time MDP model

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Embodiment Construction

[0023] The following is a detailed description of the embodiments of the present invention: this embodiment is implemented on the premise of the technical solution of the present invention, and gives detailed implementation and specific operation procedures, but the protection scope of the present invention is not limited to the following implementations example.

[0024] Such as figure 1 As shown, The present invention takes the traditional five-machine and six-part system as the research object, and applies the method of the present invention for research. As an example, it mainly includes the following steps:

[0025] Step 1: Data fitting. Through comprehensive consideration of various factors affecting the production line, historical data is used to fit the degradation process of the equipment in its natural state. Right as image 3 As shown in the system structure, the relevant data of each equipment's own operating status, yield, and maintenance records are collected, and t...

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Abstract

The invention discloses a preventive maintenance method based on a continuous time MDP model. The method comprises steps of data fitting, mathematical modeling of an MDP model, a system structure analysis and modeling, and model solving to obtain an optimal maintenance strategy. According to the method, all factors affecting benefits of a production line are taken into consideration; and an equipment degradation process is simulated by using a continuous time MDP model and the continuity of the degradation process is emphasized. And then the system layer structure analysis is carried out and a corresponding mathematic model is established. And an optimal maintenance strategy is obtained based on optimized simulation. On the basis of the reasonable maintenance strategy, the maintenance cost is lowered; the equipment utilization rate and the yield are improved; and thus an objective of production benefit maximization is achieved.

Description

technical field [0001] The invention relates to a preventive maintenance method, in particular to a preventive maintenance method for a production line. Background technique [0002] With the development of science and technology, the production line gradually reflects the characteristics of high precision, integration and complexity. Therefore, the maintenance difficulty of the production line continues to increase, and the maintenance cost increases accordingly. A reasonable maintenance strategy can effectively reduce maintenance costs, improve equipment utilization and yield, so as to maximize production benefits. [0003] At present, there are many research results on production line maintenance strategies, mainly divided into two ideas, one is to implement maintenance when the equipment reaches a certain state; the other is to implement maintenance when the equipment works for a certain period of time. With the development of neural network and fuzzy system theory and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q10/06
CPCG06Q10/04G06Q10/06375Y02P90/80
Inventor 敖银辉王翠芬
Owner GUANGDONG UNIV OF TECH