Experimental study of delayed feedback control for a flexible plate

Delayed feedback control is a novel control strategy that utilizes time delay for good control effectiveness. This strategy is now mainly studied on theoretical basis and few effect was ever made on the experiment. This paper presents an experimental study of delayed feedback control using a flexible plate as research object. A treating method for multiple time delays is proposed. The experiment system is structured based on the DSP TMS320F2812. Piezoelectric (PZT) patches are used as actuators and foil gauges as sensors. The optimal positions of PZT actuators on the plate are determined using the particle swarm optimizer (PSO). The feasibility and efficiency of delayed feedback control method are verified both theoretically and experimentally.