【摘要】 根据直升机飞行控制系统的内外回路设计概念,利用H∞回路成形方法设计了直升机双回路控制系统。首先采用H∞回路成形方法设计姿态命令/姿态保持控制器,使得直升机内回路具有良好的带宽和响应时间,且保持通道的解耦和鲁棒性;采用H∞回路成形方法构建直升机的速度回路作为外回路,实现对直升机的前飞速度和横向速度的控制,保证速度通道上具有良好的跟踪性能和鲁棒性能。并按照ADS-33E对所设计的控制系统的操纵品质做出了评价。仿真结果显示了良好的控制效果,验证了该设计方法的有效性。更多还原

【Abstract】 According to the inner-outer loop design theory of helicopter flight control system,we designed a two-loop control system by using H∞ loop shaping.First,the H∞ loop-shaping method was used to design an attitude command/attitude hold controller,which can ensure the high bandwidth and required response time of the helicopter inner loop while keeping satisfactory decoupling and robustness on this channel.By using H∞ loop-shaping method,a helicopter velocity control loop was also constructed,which is used as the outer loop cascade on the inner loop to control the forward flight velocity and latitude velocity of helicopter.It can ensure good tracking capability and robustness on velocity.The simulation results proved the control performance and effectiveness of the method.更多还原