Relay Optimization Method Considering Permanent Magnet Degradation and Manufacturing Uncertainty
An uncertain and comprehensive technology, applied in the field of relay optimization and electromagnetic relay reliability optimization that comprehensively considers permanent magnet degradation and manufacturing uncertainty, can solve product output characteristic drift, ignore the influence of relay output characteristics, and ensure product reliability. change in degree
Active Publication Date: 2021-09-14
HARBIN INST OF TECH
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However, the currently used electromagnetic relay optimization design method mainly has the following shortcomings: First, the currently used optimization is based on the influence of the design parameters on the output characteristics of the electromagnetic relay in the initial state of the product, ignoring the electromagnetic relay with permanent magnets in the working process. The performance degradation of the permanent magnet, the performance degradation of the permanent magnet will inevitably cause the output characteristics of the product to drift, that is, the reliability of the product will change; the second is that the current optimization method of the electromagnetic relay with permanent magnets aims at the central value of the design parameters on the output characteristics. The optimization of the influence, ignoring the influence of many uncertain factors in the production process on the output characteristics of the relay
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[0033] Embodiment: KMC-069 type electromagnetic relay example
[0034] Step 1: According to the characteristics of electromagnetic relay parts processing and assembly technology, analyze and determine the distribution of uncertain types of parameters in the design parameters (parts parameters and assembly parameters). The uncertain parameters can be expressed as: X=(X 1 ,X 2 ,···,X n ) T , where n is the total number of design parameters, and the uncertainty set X containing nonlinear factors is changed into a linear time-varying parameter uncertainty set Y=(Y 1 ,Y 2 ,···,Y n ) T , the converted permanent magnet performance degradation linear parameters are as follows:
[0035] Br(t):N(Br*(1-k 1 t),0.011*(1+k 2 t))k 1 =9.6*10 -7 ,k 2 =6.2*10 -7 ;
[0036] Step 2: Normal distribution type uncertainty factor standardization, random variable (Y∈R n ) is suitable for the joint probability density function f Y (y) to describe, that is, Y:f Y (y), use the Rosenblatt ...
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A relay optimization method that comprehensively considers permanent magnet degradation and manufacturing uncertainty relates to an electromagnetic relay reliability optimization method. Firstly, the performance degradation of the permanent magnet is linearized based on the time domain change, and at the same time, the Rosenblatt transform is used to decouple the multi-type uncertain factors, and then the multi-source uncertainty and its interrelationship quantitative description is obtained by using the hyperrectangular set method. Then, based on the W-index global time-varying sensitivity analysis method, the weak sensitive factors of the electromagnetic relay to the performance degradation of the permanent magnet are screened out, and then the reliability optimization model of the electromagnetic relay is established based on the reliability index requirements of the entire life cycle of the electromagnetic relay and the allowable range of design parameters , and finally use the intelligent optimization algorithm to calculate the optimal design parameter combination, use Fremont Carlo to generate virtual samples, and verify the effectiveness of the optimization results, which is a good means for the reliability optimization design of the electromagnetic relay life cycle.
Description
technical field [0001] The invention relates to an electromagnetic relay reliability optimization method, in particular to a relay optimization method that comprehensively considers the degradation of permanent magnets and manufacturing uncertainty, and belongs to the field of design optimization and quality of electromechanical products such as electromagnetic relays. Background technique [0002] Electromagnetic relays have typical characteristics such as high isolation strength, good versatility, and high interference resistance. electricity and other functions. With the development of modern equipment towards high sensitivity, high power consumption per unit volume, and high reliability, requirements such as short switching time and low switching power are also put forward for electromagnetic relays. The application of permanent magnets can solve this requirement to a certain extent, but the application of permanent magnets introduces another problem. The working proce...
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IPC IPC(8): G06F30/20G06F119/02
Inventor 叶雪荣陈昊邓杰翟国富
Owner HARBIN INST OF TECH