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Feasibility of Piezoelectric Actuation with a Reduced Number of Drivers: A Periodic Control Approach

Mechanical Engineering Department, Cleveland State University, Cleveland, Ohio, USA, h.richter{at}csuohio.edu

The problem of controlling several piezoelectric actuators using a smaller number of power drivers is considered. A multiplexed arrangement is examined where power and control are applied cyclically to subsets of actuators, introducing periodicity in the dynamics of the controlled plant. A model for the multiplexed scheme along with a periodic quadratic regulator are presented, as well as an observer-based arrangement. The feasibility of the proposed technique is demonstrated experimentally by using a single power driver to control a cantilever beam fitted with three piezoelectric actuators.

Key Words: piezoelectric actuators • multiplexing • periodic systems • periodic control • digital control.

This version was published on July 1, 2009

Journal of Intelligent Material Systems and Structures, Vol. 20, No. 10, 1259-1266 (2009)
DOI: 10.1177/1045389X09104261


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