Multimode vibration control of a smart model frame structure

This paper investigates multimodal vibration control of a three-story model structural frame by using surface bonded PZT (lead zirconate titanate) type piezoceramic patches. Piezoceramic is one of the smart materials. Complete control systems design is synthesized on the model frame using system identification and a pole placement controller. A time domain based subspace system identification is performed to identify the first three modes of the structural frame. A fit of 90% is achieved in identification results. A full-state pole placement feedback controller is designed based on the identified model. To implement the full-state feedback controller, the design of a state estimator is also performed. Experimental results demonstrate the effectiveness of multimodal active control of the smart frame structure using pole placement control.