Experimental implementation of an optimal actuator switching policy algorithm in flexible structures

Michael A. Demetriou; Murali Murugavel

doi:10.1117/12.482721

1 August 2003 Experimental implementation of an optimal actuator switching policy algorithm in flexible structures

Proceedings Volume 5049, Smart Structures and Materials 2003: Modeling, Signal Processing, and Control; (2003) https://doi.org/10.1117/12.482721
Event: Smart Structures and Materials, 2003, San Diego, California, United States

Abstract

An experimental implementation of an actuator switching scheme in a flexible structure that employs multiple piezoceramic actuators is reported in this manuscript and whose results support theoretical predictions and agree with numerical findings. The proposed supervisory control scheme attempts to improve controller performance of a system subject to spatiotemporally varying disturbances. The intelligent controller achieves its tasks by switching to different actuating devices at different time intervals. Specifically, the flexible structure under study is assumed to have multiple piezoceramic actuators available with only one being active over a time interval of fixed length while the remaining ones are kept dormant. By monitoring the state of the system, the supervisory controller engages the actuator that lies "spatially" closer to the region (epicenter) of a spatially varying disturbances within the spatial domain. This actuator switching scheme mimics the case of a moving actuator capable of residing in predetermined positions within the spatial domain of the flexible structure. Numerical studies for a flexible beam are presented in conjunction to the experimental ones to support the analytical findings of this work.

Citation Download Citation

Michael A. Demetriou and Murali Murugavel "Experimental implementation of an optimal actuator switching policy algorithm in flexible structures", Proc. SPIE 5049, Smart Structures and Materials 2003: Modeling, Signal Processing, and Control, (1 August 2003); https://doi.org/10.1117/12.482721

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