Relay life prediction test system based on degradation sensitive parameter change trend analysis
A technology of life prediction and change trend, applied in circuit breaker testing, instruments, measuring electricity and other directions, it can solve the problems of ignoring the time parameter life characteristics of the product wear degree and the inability to accurately evaluate the reliable life of the product, and achieve strong application value. Effect
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[0032] The present invention will be further described in detail below through the specific examples, the following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention with this.
[0033] From the relay failure mode and mechanism, the characteristic quantity that may be used to reflect the change of relay failure rate with time is identified. On the one hand, according to the analysis, the relay contact resistance, pull-in current, pull-in time, release current, and pull-in time may all be used as characteristic quantities to predict the life of the relay. On the other hand, the life characteristics of relays are inseparable from the effects of parameters such as environmental stress and load current. Therefore, the test system must also collect environmental stress parameters in real time, and establish a corresponding life evaluation or life verification method based on the relay contact resistance degradation model....
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Abstract
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