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Fault diagnosis optimization method, system and equipment of a CNC machine tool under multiple working conditions

A CNC machine tool and fault diagnosis technology, which is applied in the general control system, control/adjustment system, program control, etc., can solve the problems of low diagnosis rate, low utilization rate of collected data, and low generalization of fault diagnosis models. Improve generalization and accuracy, improve safety and reliability, and improve the effect of fault diagnosis rate

Active Publication Date: 2021-11-19
CHINA NAT MASCH TOOL QUALITY SUPERVISION TESTING CENT
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AI Technical Summary

Problems solved by technology

[0005] In view of the above problems, the object of the present invention is to provide a fault diagnosis optimization method, system and equipment for CNC machine tools under multiple working conditions, so as to overcome the problem that the traditional CNC machine tool monitoring sensor layout is usually determined by on-site experience, resulting in low utilization of collected data , in data processing, the difference of traditional feature information is not obvious, which leads to the problem of poor quality of feature information for working condition identification and fault diagnosis, and the defect of poor identification effect of traditional clustering under multi-working condition boundary fuzzy, and the defect of using data-driven The problem of low generalization and low diagnosis rate of the fault diagnosis model of CNC machine tools

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  • Fault diagnosis optimization method, system and equipment of a CNC machine tool under multiple working conditions
  • Fault diagnosis optimization method, system and equipment of a CNC machine tool under multiple working conditions

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Embodiment Construction

[0097] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0098] Such as figure 1 A method for fault diagnosis and optimization of CNC machine tools under multiple working conditions is shown, including the following steps:

[0099] S1: Use the effective independent method to optimize the sensor position of the CNC machine tool to form an optimal layout plan for the sensor of the CNC machine tool.

[0100] The purpose of this step is to realize the optimization of the sensor layout. The sensor position of the CNC machine tool can be optimized and calculated by means of an effective independent algorithm and other optimization processing methods, so that the collected characteristic parameters of the CNC machine tool can describe the operating state of the CNC machine tool as much as possible.

[0101] The generation process of the sensor optimal layout scheme is to use the effective independence method (EI) t...

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Abstract

The invention proposes a fault diagnosis and optimization method, system and equipment of a numerical control machine tool under multiple working conditions. By optimizing the layout of the CNC machine tool sensors, the effectiveness of data acquisition and utilization is improved, and the improved multi-scale entropy algorithm is used to extract the characteristic information of different time scales of CNC machine tools representing different states, mining deep-level feature information, and improving the relationship between different states. feature differentiation; on this basis, ITML-K-means clustering is used to identify the working conditions of CNC machine tools, so as to eliminate the problem of poor identification effect of traditional clustering methods in the case of fuzzy boundaries of multiple working conditions; finally, using entropy-based The regularization function is used to solve the overfitting problem in the construction of the data-driven CNC machine tool fault diagnosis model, so as to improve the generalization and accuracy of the CNC machine tool fault diagnosis model, and realize the optimization of the CNC machine tool fault diagnosis model. The invention has important help for improving the operation safety and reliability of the numerical control machine tool and improving the fault diagnosis rate of the numerical control machine tool.

Description

technical field [0001] The invention relates to the technical field of numerical control machine tool monitoring, and more specifically relates to a fault diagnosis and optimization method, system and equipment of a numerical control machine tool under multiple working conditions. Background technique [0002] Numerical control machine tool (Computer numerical control machine tools), referred to as "CNC machine tool", is an automatic machine tool equipped with a program control system. The emergence of CNC machine tools has greatly improved the ability and efficiency of machine tool processing, and has been widely used in the manufacturing industry. As the key equipment for metal cutting and material manufacturing, CNC machine tools have complex structures, changing working conditions and various fault forms, and it is difficult to trace the root cause of failure. The quality of the operation status is directly related to the processing level and processing efficiency of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/4065
CPCG05B19/4065G05B2219/37616
Inventor 黄祖广王金江薛瑞娟常开顺蒋峥张凤丽
Owner CHINA NAT MASCH TOOL QUALITY SUPERVISION TESTING CENT
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