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Method for determining reconfiguration time of reconfigurable manufacturing system

A technology for manufacturing systems and determining methods, applied in special data processing applications, instruments, electrical and digital data processing, etc., can solve problems such as not considering production conditions, unable to intuitively reflect system changes, and no comprehensive consideration of workpiece and machine tool status.

Active Publication Date: 2016-04-27
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0005] (1) It is only a qualitative analysis of the system status, which cannot directly reflect the changes of the system
[0006] (2) When analyzing the complexity of the system, it only analyzes the static complexity without considering the actual production situation
[0007] (3) When analyzing the factors affecting the state of the system, simply analyze the state of the machine tool or the state of the workpiece, without comprehensively considering the state of the workpiece and the machine tool
[0008] (4) The system status is not analyzed from the perspective of processing function and processing capacity

Method used

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  • Method for determining reconfiguration time of reconfigurable manufacturing system
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  • Method for determining reconfiguration time of reconfigurable manufacturing system

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Embodiment Construction

[0037] The present invention will be described in detail below with reference to the drawings and embodiments.

[0038] The present invention provides a method for determining the reconfiguration timing of a reconfigurable manufacturing system. Considering that the RMS system state is determined by the interaction between the workpiece and the machine tool, the workpiece category proposes processing function requirements for the manufacturing system, and the number of workpieces is the manufacturing system The demand for processing capabilities is put forward. As a provider of processing functions and processing capabilities, machine tools have one or more processing functions and a specific number of processing capabilities. Therefore, analyzing the complexity of the manufacturing system from the perspective of processing functions and processing capabilities can well reflect the interaction between the workpiece and the machine tool, and essentially reflect the state of the manu...

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Abstract

The invention discloses a method for determining reconfiguration time of a reconfigurable manufacturing system. The method is characterized in that a reconfiguration point of an RMS (reconfigurable manufacturing system) can be quickly and reasonably determined according to the change of an order, a processing function and a processing capability capable of meeting market requirements are rapidly reconfigured, and the features of low cost and quick response of the RMS are kept. The method comprises the following steps of firstly analyzing RMS dynamic complexity by utilization of information entropy, dividing the RMS dynamic complexity EX into a sum of an RMS active complexity Ep and an RMS negative complexity En, and analyzing RMS complexity change situation in the perspectives of the processing function and the processing capability; then constructing a potential function by utilization of a cusp catastrophe theory, wherein the catastrophe moment of the potential function is the reconfiguration time point of the RMS. The method disclosed by the invention has the advantages that reconfiguration point decision judgment evidence is provided for a decision maker, the system reconfiguration is performed in time, and the activity of the RMS is kept.

Description

Technical field [0001] The invention relates to the field of advanced manufacturing technology, in particular to a method for determining the reconfiguration timing of a reconfigurable manufacturing system. Background technique [0002] With the development of the economy, the competition in the manufacturing industry has intensified, and customer needs have become more sophisticated and diversified. This has led to a continuous increase in product categories, large fluctuations in market demand, and continuous innovation in science and technology. The window for product launches is shrinking. The defects of the manufacturing system are gradually revealed, and the research of new manufacturing systems has gradually become a hot spot, and the pursuit of low-cost production of high-quality products to gain a competitive advantage. The Reconfigurable Manufacturing System (RMS) can provide precise functions and capabilities according to customer requirements, and has gradually become...

Claims

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Application Information

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IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 王国新黄思翰商曦文阎艳
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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