飞机力提示智能侧杆控制器设计方法

The smart side-stick controller with force cue is different from the traditional one, as it has an additional function to mitigate and prevent adverse aircraft-pilot coupling when the aircraft falls in the presence of failures or is close to the envelope, contributing to improvement of flight safety. In the presence of failures or on the edge of the safe flight envelope, the aircraft dynamics are subject to sudden changes, which will then cause the change of human pilot control strategies. It is therefore needed to study the theoretical design method of the smart side-stick controller. A pilot-aircraft system model with the smart side-stick is developed based on an analysis of the time-varying and nonlinear characteristics of sudden changes in aircraft dynamics and the control behaviors of the human pilot with the force cue from the smart side-stick. Then, a design method of the smart side-stick controller with force cue is presented based on time-varying spectrum analysis and evaluation criteria of the pilot-aircraft system. The design procedures are given in detail. Simulation of the aircraft in failure offers an explanation to the mechanism of mitigation of unfavorable aircraft-pilot coupling with the smart side-stick controller with force cue. The simulation results indicate that the smart side-stick controller can not only improve pilot control accuracy, but also mitigate the trend of adverse aircraft-pilot coupling, thus demonstrating the feasibility and validity of the design method proposed.