Fuzzy sliding mode control of flexible spinning beam using a wireless piezoelectric stack actuator

Spinning structures play an outstanding role in aerospace engineering. The vibration caused by eccentric forces or external excitations would damage the structures. Vibration suppression of such spinning structures is necessary, but challenging because of the arrangement of actuators. A new wireless piezoelectric stack actuator spinning in a varying magnetic field is introduced in this paper to avoid the wires winding with large control force. The control voltage on the actuator is generated by the motion of the wires in magnetic field. Besides, fuzzy sliding mode control with universal fuzzy sets based on the wireless actuator is investigated. Numerical simulation demonstrates that the tip displacement response of the spinning beam reduces over 98% compared with that open loop, while the magnitude of the peak in frequency domain decreases from 0.0976 dB to 0.0383 dB. It proved that the proposed actuator is feasible and the fuzzy sliding mode controller could suppress the vibration of spinning beam effectively with a strong robustness to noise.