Workshop scheduling simulation method based on equipment failure scheduling model

A technology of equipment failure and workshop scheduling, which is applied in the direction of comprehensive factory control, comprehensive factory control, electrical program control, etc., can solve the high defect rate of product replacement equipment reprocessing, the high probability of equipment failure, and the waste of time for re-clamping and other issues to achieve the effect of shortening the design cycle, increasing the possibility, and reducing inventory costs

Inactive Publication Date: 2014-05-28
XIAN TECH UNIV
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Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a workshop scheduling simulation method based on the equipment failure scheduling model, which aims to solve the problems of the traditional workshop scheduling simulation method, such as the high probability of equipment failure, the high defect rate caused by the reprocessing of product replacement equipment, and the high defect rate caused by reprocessing. The problems of wasted time in clamping, wasteful inventory cost and high liquidated damages for delayed delivery

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  • Workshop scheduling simulation method based on equipment failure scheduling model

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Embodiment Construction

[0021] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0022] This method dynamically decomposes the production tasks into different levels and interconnected tasks with different granularities with logical timing by planning, task decomposition, process fusion, process optimization, etc., based on the failure of each type of equipment. Model, each production task is allocated to the most suitable equipment through equipment selection and matching, so that the workshop scheduling is dynamically formed. The logic and timing relationship between production tasks determines the relationship between equipment; the decomposition hierarchy of production tasks also determines the hier...

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Abstract

The invention discloses a workshop scheduling simulation method based on an equipment failure scheduling model. The workshop scheduling simulation method comprises the following steps: establishing an equipment failure scheduling model and an operation model for performing data analysis, modifying the models, implementing tests, replacing data for performing the secondary simulation, analyzing the bottle neck, and analyzing the simulation result. According to the workshop scheduling simulation method based on the equipment failure scheduling model, provided by the invention, the possibility of successfully designing a workshop production system is increased, and the design cost and risks are reduced; the simulation result is verified by using an genetic algorithm, the design period of a traditional design is shortened from the aspect of time, the probability of the equipment failure is reduced, the defect produced by re-processing the product replacing equipment is lowered. The actual production model is applied to eM-Plant software and is converted into a model recognizable by the software, the time wasting for re-clamping is avoided, the stock-holding cost caused by the overstock waste of to-be-processed products is reduced, and liquidated damages and the reputation loss caused by delayed delivery are reduced.

Description

technical field [0001] The invention belongs to the technical field of workshop scheduling simulation methods, and in particular relates to a workshop scheduling simulation method based on an equipment failure scheduling model. Background technique [0002] With the development of science and technology, the scale of production is getting larger and more complex, and the market competition is becoming more and more fierce. Therefore, higher requirements are put forward for the management of enterprises and the monitoring of production processes. The demand for multi-variety and small-batch products from different customers requires the manufacturing workshop to be able to cope with such dynamic and diverse requirements. The problem faced by enterprise managers and IE engineers is: how to analyze the characteristics of dynamic job shop scheduling when the workshop equipment fails , analyze the impact of workshop equipment failures on Job-Shop scheduling results; how to contro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/418
CPCY02P90/02
Inventor 曹岩白瑀曹森杨丽娜
Owner XIAN TECH UNIV
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