摘要
非相似余度配置方式可省去中央液压源并有效克服共性故障,成为多电飞机的发展趋势.利用机械特性匹配的方法对变转速电动静液作动器和直驱式机电作动器组成的非相似余度系统进行总体设计.考虑舵面空气负载和连接刚度建立总体数学模型,对3种典型工作模式进行理论分析和仿真对比,再现带载情况下这3种工作模式的切换瞬态.同时提出电机电流内环零值控制的无载工作模式,控制器结构简单并且切换可靠迅速.分析结果对非相似作动系统的设计、工作模式和故障切换方法提供了理论依据.
The dissimilar redundant actuator system gets rid of central hydraulic power and avoids the common fault effectively,which is consistent with the development trend of more electric aircraft.Based on the load characteristics matching method,a dissimilar redundant actuator system made of electro-hydrostatic actuator with variable motor speed and electro-mechanical actuator was designed.The overall mathematic model was established by considering both of the air load and connecting stiffness of control surface.Then three typical operation modes were analyzed theoretically and simulated contrastively,and the switch transience between these operation modes under the air load was presented,too.Meanwhile,the zero current control method in the current loop of motor was proposed to the no-load operation mode.Its controller was simple to realize and the switch was rapid and reliable.The analysis results provide the theoretical evidence to system design,operation mode and fault switch method of dissimilar redundant actuator system.
出处
《北京航空航天大学学报》
EI
CAS
CSCD
北大核心
2012年第4期432-437,443,共7页
Journal of Beijing University of Aeronautics and Astronautics
基金
国家科技合作计划资助项目(S2010GR0522)
国家自然科学基金资助项目(50675009)
关键词
非相似余度作动系统
工作模式
系统设计
切换瞬态
dissimilar redundant actuation system
operation modes
system design
switch transience
