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多电/全电飞机的发展使得电力作动系统逐渐应用于飞机舵面的作动,其故障模式和故障影响问题是适航审查的重点。为解决机电作动系统中非指令振荡信号导致的故障模式及故障影响不明确的问题,本文分析振荡信号的产生机理、产生位置及表现形式,对变频率、变幅值的振荡信号在机电作动系统中的故障传播和影响展开研究。研究结果表明系统架构会改变振荡信号波形,传感器输出振荡信号对系统的故障影响最大,系统舵偏输出与振荡信号同频率变化,且频率在0.2-3Hz、8-10Hz间的振荡信号会引发电磁转矩与舵偏角不可接受的振荡,振荡信号幅值影响系统跟踪指令的速度。
The development of multi-electric / all-electric aircraft makes the power-operated system gradually applied to the operation of the aircraft’s rudder surface. The problems of its failure modes and faults are the focuses of airworthiness review. In order to solve the problem that the non-commanded oscillation signal in electromechanical actuation system has an indefinite influence on the failure modes and faults, this paper analyzes the generation mechanism, the position and the manifestation of the oscillation signal, analyzes the oscillation frequency of the variable frequency, Research on fault propagation and influence in moving system. The results show that the system architecture will change the waveform of the oscillating signal. The output signal of the sensor will have the greatest impact on the system fault. The output of the system will change at the same frequency as the oscillating signal. The oscillating signals with frequency of 0.2-3Hz and 8-10Hz will induce electromagnetic Torque and rudder angle unacceptable oscillation, the amplitude of the oscillation signal affects the speed of the system to track the command.