Mems-based Micro-electromagnetic Polarized Relay Design

With the help of MEMS, the microform, multifunction, intelligence and reliability of information system are well developed. The micro-electromagnetic relay is the most complex and advanced electromagnetic relay. In this paper, the actuality and history of researching MEMS are reviewed. Through analyzing the structure of micro-electromagnetic relay, some problems and their countermeasure in the design are propose.Furthermore, this paper provides a relay parameter measuring system controlled by MSC-51 single-chip microcomputer. It can be used to measure mechanical and electrical parameters of relay; because the reliability of electromagnetic relay is very important to the safe running of the control system, this paper introduces a reliability index for micro-electromagnetic relay. The compliance test-plan of success ratio for it is studied through the application of Bayesian theory. The paper compares the methods of classical statistical theory and Bayesian theory for making sampling plan of success ratio. The investigation shows that the sample size of the test plan based on Bayesian theory is smaller than the classical test plan on special condition.