Abstract：Electric hydrostatic actuator as the integrated actuation system used in aircraft has the advantages of both small size and high power density. Dual-redundancy rare earth permanent magnet brushless DC servo system used in EHA improves aircraft control actuator working reliability. The system topology is proposed by the analysis of different kinds of redundancy running modes and structures of dual-redundancy motor. The cause and consequence of unequal torque in two redundancy motors are analyzed. The equal torque is realized by using crossed-feedback control and piecewise linear interpolation methods. Experimental results show that the method can effectively eliminate torque unequal. The system frequency response can achieve 5Hz, which can meet the requirements of modern aircraft actuation system, and it can be used in the future power-by-wire flight control system.
周奇勋, 李声晋, 卢刚, 张举中. 双余度机载永磁无刷直流伺服系统转矩均衡性[J]. 电工技术学报, 2009, 24(6): 17-23.
Zhou Qixun, Li Shengjin, Lu Gang, Zhang Juzhong. Torque Balance of Dual-Redundancy PM Brushless DC Servo System Used in Aircraft. Transactions of China Electrotechnical Society, 2009, 24(6): 17-23.
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2009, Vol. 24 
