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Performance Evaluation Method for Assembly Line with Multiple Failure Modes

An assembly line, multi-fault technology, applied in the direction of data processing applications, instruments, calculations, etc., can solve the problem of the assembly line staying in a single fault

Active Publication Date: 2019-04-19
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] At present, the research on serial and parallel production lines is relatively mature and has many achievements, while the research on assembly lines and closed-loop systems is less, and the research on assembly lines is still in the single-fault situation, and there is no modeling analysis of assembly lines in multi-fault mode. Often multiple failure modes

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  • Performance Evaluation Method for Assembly Line with Multiple Failure Modes
  • Performance Evaluation Method for Assembly Line with Multiple Failure Modes
  • Performance Evaluation Method for Assembly Line with Multiple Failure Modes

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Embodiment Construction

[0115] The embodiments of the present invention will be described in detail below, and the described embodiments are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0116] This embodiment is to illustrate the multi-failure mode assembly line performance evaluation method proposed by the present invention with three machine assembly lines:

[0117] Table 1 Parameters of each machine in the three-machine assembly line

[0118]

[0119] 1) Assembly line breakdown. By decomposing the virtual assembly line after introducing the capital flow, the building blocks l(MF 1 ) and l(FF 2 ).

[0120] 2) Establish the decomposition equation. Substituting m=3, a=2, η=1 into equations (7), (8) and (10), the real failure rate equation, virtual failure rate equation, and processing equation can be obtained, as follows:

[0121] ·True failure rate equation:

[0122]

[0123] · Virtual failure rate equation

[...

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Abstract

The invention puts forward a multiple fault mode assembly line performance assessing method and explains reasonability of the same via a simulation experiment. The multiple fault mode assembly line performance assessing method comprises the following steps: a fund flow is introduced based on an original assembly line material flow so as to form a virtual assembly line; along a material flow plus fund flow direction, and the virtual assembly line is decomposed into a number of two-machine building blocks; decomposing equations for a real failure rate, a virtual failure rate and a processing rate are built; parameters of virtual machines in the building blocks are solved; again, the equations are subjected to solving operation via an iteration method (ALDA), performance indexes including a production rate and a quantity of articles being manufactured of the assembly line are finally obtained, the performance indexes and a simulation experiment results are subjected to numerical value comparing operation, and reasonability of the multiple fault mode assembly line performance assessing method can be verified.

Description

technical field [0001] The invention relates to the field of manufacturing system performance evaluation, in particular to a multi-failure mode assembly line performance evaluation method, which is used to evaluate the average output and each buffer level index of the assembly line. Background technique [0002] Manufacturing (production) system performance evaluation is of great significance to the design, improvement and management of production systems. There are many different types of production structures in actual production, such as serial production lines, parallel production lines, assembly lines, etc. The statistical fluctuations and processing dependencies of the production process make even small disturbances have a great impact on the production system, exacerbating the complexity of the performance evaluation of the manufacturing system, and these disturbances can be reflected in the form of faults to a certain extent come out. Analysis and simulation are tw...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/06G06Q50/04
CPCY02P90/30
Inventor 王军强闫飞一崔鹏浩崔福东范国强胥军杨宏安
Owner NORTHWESTERN POLYTECHNICAL UNIV
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