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随着多电/全电化飞机关键技术的发展,由功率电传作动器——电动静液作动器(EHA)和机电作动器(EMA)构成的非相似余度作动系统,成为飞机多电/全电化发展的新趋势.介绍了非相似余度作动系统的结构组成和工作原理,建立了非相似余度作动系统力纷争的数学模型.在此基础上,分析了非相似余度作动系统动态力纷争的产生机理,基于上述原理提出了轨迹发生器+前馈补偿器、力纷争反馈PID补偿器和EHA力控制/EMA位置控制等3种减小动态力纷争的动态力均衡控制策略,并对其进行了理论分析与设计.最后,对所提出的3种动态力均衡控制策略进行了仿真对比,并从跟踪动态性能和抗负载扰动动态性能两个方面对仿真结果进行了深入分析.分析结果为非相似余度作动系统的设计和力均衡控制提供了理论依据.
With the development of key technologies for multi / all-electric aircraft, a non-analogous redundant actuation system consisting of a power telex actuator, an electro-hydrostatic actuator (EHA), and an electromechanical actuator (EMA) The new trend of multi-electric / full-electric aircraft development, introduces the structure and working principle of non-similar redundancy actuation system, and establishes the mathematical model of force dispersion of non-similar redundancy actuation system.On this basis, Based on the above principle, three kinds of mechanisms to reduce dynamic force disputes such as trajectory generator + feedforward compensator, force dispatch feedback PID compensator and EHA force control / EMA position control are proposed. Dynamic force equilibrium control strategy and theoretical analysis and design.Finally, the simulation and comparison of the three proposed dynamic equilibrium control strategies are carried out, and the simulation is carried out from two aspects of tracking dynamic performance and anti-load disturbance dynamic performance The results are analyzed in depth.The results provide a theoretical basis for the design of non-similar redundancy actuation system and force equilibrium control.