抄録
An energy regenerative active vibration control method using piezoelectric actuators, class D drivers, output filters and sliding mode controllers is proposed by the authors. DC voltage sources are used as power sources in the previous study and capacitors which can store regenerated energy also can be used as power sources. Class D drivers and output filters consist of switches and passive electric elements. Therefore, systems using capacitors as power sources can be considered as semi-active systems. Voltages of capacitors used as power sources are not constant because the capacitors are charged and discharged in control processes. An advantage of the proposed method is that characteristics of closed-loop systems are independent from voltages of power sources when systems are in sliding mode conditions. The advantage is suitable for systems using capacitors as power sources. The validity of the semi-active control method based on the proposed method is shown by numerical simulations of a SDOF model.
