Improved Adaptive Control of SMA Actuator Based on Inverse Hysteresis Compensation

Abstract:

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Shape memory alloys have become the most promising construction material for smart actuators in diverse applications. However, their highly nonlinear hysteresis behaviour sets the main barriers in precise motion control. This paper presents an adaptive MKP control scheme based on a feed-forward compensator using the inverse of the modified KP model and the selective parameter adaptation law, to realize dynamic hysteresis compensation for real-time applications. The performance of the proposed control scheme was evaluated experimentally. The results indicate that such an improved adaptive control scheme is characterized by the reduced computation, rapid parameter convergence and effective hysteresis linearization.

Info:

Periodical:

Edited by:

Zhou Mark

Pages:

1771-1776

DOI:

10.4028/www.scientific.net/AMM.52-54.1771

Citation:

H. Y. Luo et al., "Improved Adaptive Control of SMA Actuator Based on Inverse Hysteresis Compensation", Applied Mechanics and Materials, Vols. 52-54, pp. 1771-1776, 2011

Online since:

March 2011

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Price:

$35.00

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