A reliability analysis method for an airborne redundant electrical circuit interconnection system without failure data

• Main Authors: CUI SHIQI, LYU XIAOFENG, ZHANG ZHEN, DENG LI, CAI MINGCHAO, YE WEN, MA LING
• Format: Patent
• Language: Chinese; English
• Published: 07.05.2019
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The invention belongs to the technical field of aviation electrical equipment and electrical engineering, and designs a novel reliability analysis method under the condition of no failure data for anairborne electrical circuit interconnection system designed for redundancy. The method comprises the steps that firstly, a redundancy EWIS reliability calculation model is constructed by starting withan accurate life distribution function of multiple parameters of redundancy EWIS which are firstly connected in parallel and then connected in series; a sample of EWIS lifetime is obtained through the minimum maximum Monte-Carlo simulation, a probability paper inspection method and a Pearson fitting goodness inspection method are integrated to judge whether the redundancy EWIS obeys Weibull distribution or not; And finally, for the EWIS without fault history, the reliable service life of the EWIS is determined by adopting a failure-free data reliability analysis method. 本发明属于航空电气设备及电气工程技术领域，针对多余度设计的机载电气线路互联系统，本发明设计了一种