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Equipment health state assessment method

A technology of health status and equipment, applied in the direction of nuclear methods, metal processing equipment, measuring/indicating equipment, etc., can solve the problems of difficult equipment failure assessment, achieve accurate assessment, and reduce the effect of part quality loss

Active Publication Date: 2022-07-29
CHENGDU AIRCRAFT INDUSTRY GROUP
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Problems solved by technology

[0004] The main purpose of this application is to provide a method for evaluating the health status of equipment, which aims to solve the defect that equipment failure assessment is difficult in the prior art

Method used

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Experimental program
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Embodiment approach 1

[0045] refer to figure 1 , the present application discloses a device health state assessment method, comprising the following steps:

[0046] S1, obtain the historical vibration parameter and the real-time vibration parameter of the target device respectively, and build the first sliding window according to the historical vibration parameter, and build the second sliding window set according to the real-time vibration parameter;

[0047] S11. Obtain historical data and real-time vibration parameters, and select characteristic values ​​for evaluating the above parameters;

[0048] Extract the vibration parameters during the operation of the main shaft of the target equipment from the system database as historical vibration parameters; at the same time extract the vibration data during the operation of the target equipment as real-time vibration parameters, wherein the historical vibration parameters and real-time vibration parameters need to come from the same sensor pair The...

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Abstract

The invention discloses an equipment health state assessment method. The method comprises the following steps: firstly, selecting an absolute mean value and a root-mean-square value as features for describing related parameters; calculating sphere centers of the historical vibration parameters and the real-time vibration parameters through a support vector description algorithm model, and constructing a health index calculation model through the sphere centers; and finally, constructing a curve of the running state of the equipment through a membership function, importing a calculation result of the health index calculation model into the curve of the running state of the equipment to calculate a corresponding health evaluation value, and judging the running state of the equipment through comparison of the health evaluation value and a standard value. According to the method, historical parameters and real-time parameters of equipment operation are selected as basic data, characterization indexes of the health state of the equipment spindle can be established without failure parameter data and degradation characteristics of the equipment, a characteristic threshold value when the spindle fails is deduced, and prediction of the failure state of the equipment is achieved; therefore, accurate evaluation of the operation state of the equipment is realized, and technical support is provided for fault diagnosis and predictive maintenance.

Description

technical field [0001] The present application relates to the technical field of machining, and in particular, to a method for evaluating the health status of equipment. Background technique [0002] As an "industrial mother machine", CNC machine tools are the foundation and support for the high-speed and high-quality development of the manufacturing industry, and are also the embodiment of the country's manufacturing capabilities. They are widely used in equipment manufacturing in major fields such as aerospace, deep sea, and transportation. [0003] As the core functional component of CNC machine tools, the spindle can directly determine the manufacturing level of the entire machine tool, and its health status has a greater impact on the machining accuracy, machining efficiency and production cost of CNC machine tools. Therefore, it is necessary to monitor the health status of the spindle; however, the monitoring methods used in the prior art all need to obtain relatively ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q17/00G06Q10/06G06Q10/00G06Q50/04G07C3/00G06N20/10
CPCB23Q17/008G06Q10/06393G06Q10/20G06Q50/04G07C3/005G06N20/10
Inventor 李海曾德标李颖夏远猛陈学振陶文坚周昕张云诏
Owner CHENGDU AIRCRAFT INDUSTRY GROUP
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