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For a new generation of spaceflight launch site online air supply mode, new health status of the equipment is difficult to effectively evaluate the single sample problem, put forward a kind of equipment based on hidden markov state of health management and prediction method; The method use the history of equipment monitoring data hid-den markov health status evaluation model was constructed, based...
This paper studied the SOC characteristics of the unplanned power failures in distribution network. In order to discover the SOC characteristics of the power failures, the statistical data of reliability in one middle-size city in China are presented firstly. The total interruption duration of customers and total interruption duration of system of unplanned power failures are considered as the variables...
The switching power has been used in worldwide step by step. DC/DC converter is the core of a switching power. The research of reliability and failure analysis of the DC/DC converters is important to make products reliable and to maintain its performance under different loads. Based on the long-term experience of DC/DC converter failure analysis, two kinds of key failure modes of DC/DC converter which...
Based on the stress induced void theory, three kinds of narrow-wide two-layer copper interconnection structure with dummy via in M1 were designed and put under different high temperature conditions for test. Under the action of high temperature, influence of dummy vias in lower layer metal (M1) on the failure phenomenon of the interconnect structure was analyzed. The result shows, adding dummy via...
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