【作者】 王兴坚； 蔺思茹； 王少萍； 石健； 张超；

【Author】 WANG Xingjian;LIN Siru;WANG Shaoping;SHI Jian;ZHANG Chao;Beihang University, School of Automation Science and electrical engineering;

【机构】 北京航空航天大学自动化科学与电气工程学院；

【摘要】 电液作动系统是飞机的一个重要组成部分,由于故障的并发性和耦合性,对电液作动系统的多故障诊断具有重大的意义。本文提出了采用指定元分析的方法对电液作动系统进行多故障诊断,将典型故障模式作为指定模式,建立空间投影框架,将投影能量作为判断系统是否存在故障的指标来进行多故障的诊断。仿真结果表明,该方法能够有效进行电液作动系统的多故障诊断,是一种可行的多故障诊断方法。更多还原

【Abstract】 The electro-hydraulic actuation system is an important part of an aircraft. Due to the concurrency and coupling of the fault, multi-fault diagnosis of the electro-hydraulic actuation system is of great importance. This paper proposes a method based on the energy of the space projection to diagnose multi-fault of the aircraft electro-hydraulic actuation system. The typical fault modes are set as specified modes, and through establishing the framework of the space projection, the diagnosis of multiple faults in the system can be achieved based on the mapping energy. The simulation results show that this method can fault diagnosis effectively for electro-hydraulic actuation system. It is a feasible method for multiple faults diagnosis.更多还原