In this paper, we use segmented piezopolymer and piezoceramic materials to impart control forces to structures for the purpose of annihilating undesired elastic motion. We use modal control techniques to generate the control inputs, particularly the Independent Modal-Space Control method. The actuators can be of any shape or size, making control implementation simpler than for modal actuators, which require that the actuators be cut into specific shapes. We analyze the performance of piezoceramic and piezopolymer actuators with regards to the size of the actuators and the maximum amount of charge that can be applied to these elements. The proposed control method is easy to implement and versatile. The control problem is formulated to have a similar form when traditional mechanical actuators are used. System simulations on 1D structural elements show that piezoceramic actuators are desirable for control of elastic motion.

Date Published: 8 May 1995
PDF: 13 pages
Proc. SPIE 2443, Smart Structures and Materials 1995: Smart Structures and Integrated Systems, (8 May 1995);

Published in SPIE Proceedings Vol. 2443:
Smart Structures and Materials 1995: Smart Structures and Integrated Systems
Inderjit Chopra, Editor(s)