Dynamic optimization control method of process quality control graph and age-set maintenance combined design

A process quality and control method technology, applied in the direction of program control, electrical program control, comprehensive factory control, etc., to achieve the effect of solving continuous optimization problems and accurate data

Active Publication Date: 2016-12-21
ZHENGZHOU UNIVERSITY OF AERONAUTICS
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Problems solved by technology

[0005] In view of the above situation, the purpose of the present invention is to overcome the deficiencies in the prior art and provide a dynamic process quality control chart and fixed-age maintenance that can solve the continuous optimization problem of the joint design scheme of the production system process quality control chart and fixed-age maintenance Control Method of Joint Design Scheme

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  • Dynamic optimization control method of process quality control graph and age-set maintenance combined design
  • Dynamic optimization control method of process quality control graph and age-set maintenance combined design
  • Dynamic optimization control method of process quality control graph and age-set maintenance combined design

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Embodiment Construction

[0037] The following takes a test production system as an example to further describe the implementation of the present invention in detail.

[0038] The dynamic process quality control chart and the control method of the fixed age maintenance joint design plan, such as figure 1 , 2 , 3, 4, and 5, the specific steps of the method are as follows:

[0039] Step 1: Analyze the system to establish a coupling mechanism of maintenance strategy and control chart monitoring;

[0040] Suppose the system has three possible states: controlled, out of control, and faulty. It is known that during each maintenance interval, the time points t when the system turns from controlled to out of control and from out of control to downtime respectively obey the parameter λ 1 And λ 2 Exponential distribution, the density function is f 1 (u) and f 2 (v); The process quality characteristic of the system output is X, when controlled, X~N(μ,σ 2 ), X~N(μ+δ,σ 2 );use The control chart monitors the process quali...

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Abstract

The invention provides a dynamic optimization control method of a process quality control graph and age-set maintenance combined design, and the method is used to realize continuous optimization of a process quality control graph and age-set maintenance combined design scheme of a production system so as to minimize the integrated cost of production operation. The method comprises that 1) a process quality control graph and age-set maintenance combined design model, aimed at minimizing the integrated cost of production operation, of the production system is constructed; 2) a process quality control graph and age-set maintenance combined design scheme is solved according to the combined design model by utilizing a genetic algorithm; 3) an initial scheme and a cost management countermeasure are executed, and when shut-down maintenance is triggered during system operation, whether the cost level of a significance influential factor is changed obviously is determined; and 4) according to a determination result, the execution scheme is optimized and enforced, a new cost-reducing countermeasure is provided and the original design scheme are executed if there is no change, and if there is change, the design scheme needs to be optimized, and the design scheme is solved again according to a change result by utilizing the genetic algorithm, and execution of the scheme is determined.

Description

Technical field [0001] The invention relates to the field of process quality and reliability control of production systems, in particular to a dynamic process quality control chart and a fixed age maintenance joint design optimization control method. Background technique [0002] In the production process, preventive maintenance of the equipment system and the use of control charts to monitor the quality of the production process are two basic means and methods to ensure product quality. Since the integrated economic decision-making of preventive maintenance strategies such as timing and aging and quality control charts is more economical than the independent economic decision of a single measure in terms of comprehensive costs of production and operation, the problem of joint economic design of preventive maintenance strategies and control charts In recent years, it has received wide attention and is one of the research hotspots in the field of production system quality and econ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/418
CPCG05B19/41875G05B2219/31359Y02P90/02Y02P90/80
Inventor 陈洪根张艳薛丽王国东葛晓梅牛小娟
Owner ZHENGZHOU UNIVERSITY OF AERONAUTICS
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