On Active Sidestick Force Control Strategy Technology

The future aircraft control system will be based on FBW and active sidestick, which can provide various force-feeling and force-control. This paper introduces the features of active sidestick, develops an active sidestick system based on sinus-wave motor, proposes a control law based on 3-loops control to realize the precise control, a method to change characteristics by impedance control, an accumulation control strategy to solve the problem of precise return to neutral position, and lists the result of force-position curve and stick shaker, this system can realize a higher control accuracy and stability, the response ability in low frequency, which has an important significance to engineering prototype.