基于粗糙集理论和生命初态信息的继电器寿命预测方法

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Abstract Working life is an important feature of product reliability. However the product screening method using life as the sole index hasn’t been thoroughly studied for long life products such as relays. After the life test data of relays was analyzed,a fact was found recently that there are some relations between relay’s initial working state and its working life, i.e., better performance of the initial state, longer life expectancy of the individual relay, and vice versa. Based on the fact, a method of the individual relay’s life predicting and screening was presented. Firstly, obtained the initial state performance parameters values and life values of the sample relays through life test. Secondly, extracted a set of parameters associated with life based on the method of attribute reduction from the rough set theory, then established a set of life decision rules based on the extracted parameters. After that, for any one of the relay whose model same as the samples, its life could be predicted only according to its initial state information and the rules, then the screening using life as the sole index could be achieved. At last, the availability of the above method was proved by a practical example of relay.

Key words： Relay initial state information life prediction product screening rough set theory

Received: 28 July 2014 Published: 13 October 2016

PACS:

TM581.3

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	Articles by authors
	Li Lingling
	Zhang Shinuan
	Li Zhigang
	He Pengju

Cite this article:

Li Lingling,Zhang Shinuan,Li Zhigang等. The Life Prediction Method of Relay Based on Rough Set Theory and Relay’s Initial Life Information[J]. Transactions of China Electrotechnical Society, 2016, 31(18): 46-53.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2016/V31/I18/46

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