Control of SMA actuators in dynamic environments

Glenn V. Webb; Larry N. Wilson; Dimitris C. Lagoudas; Othon K. Rediniotis

doi:10.1117/12.350142

4 June 1999 Control of SMA actuators in dynamic environments

Glenn V. Webb, Larry N. Wilson, Dimitris C. Lagoudas, Othon K. Rediniotis

Proceedings Volume 3667, Smart Structures and Materials 1999: Mathematics and Control in Smart Structures; (1999) https://doi.org/10.1117/12.350142
Event: 1999 Symposium on Smart Structures and Materials, 1999, Newport Beach, CA, United States

Abstract

The strain-temperature hysteresis for shape memory alloy (SMA) actuators has been shown to undergo large changes according to the applied load. This paper provides an adaptive hysteresis model capable of accounting for a time-varying hysteresis, specifically SMA hysteresis under a varying applied stress. Previous research has established excellent performance, in both numerical and laboratory experiments, of the adaptive hysteresis model for actuators with fixed hysteresis. In this paper, the performance of the adaptive model when there are significant changes in the hysteresis characteristics is examined in laboratory tracking experiments.

Citation Download Citation

Glenn V. Webb, Larry N. Wilson, Dimitris C. Lagoudas, and Othon K. Rediniotis "Control of SMA actuators in dynamic environments", Proc. SPIE 3667, Smart Structures and Materials 1999: Mathematics and Control in Smart Structures, (4 June 1999); https://doi.org/10.1117/12.350142

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