Research and Implementation of Centrifugal Harmonic Force Generator System for Vibration Control

The active vibration control system is the main path to restrain the low frequency vibration caused by the helicopter rotor system. This paper puts forward the active vibration control system of centrifugal harmonic force generator driven by permanent magnet brushless DC motor, expounds its composition and working principle, and thoroughly analyzes the output force regulation mode of the actuator. Subsequently, the 180 W/2588 N low-power high-torque centrifugal harmonic force generator and its control system are developed successfully, and its key components such as motor parameters, isolation drive circuit and bus support capacitance are designed. Finally, the integrated experimental platform for active vibration control is constructed and verified by experiments. The experimental results suggest that the output force regulation effect of the actuator is excellent, which directly lays a theoretical and technical foundation for the application of centrifugal harmonic force generator in the new generation helicopter.