Improved adaptive control of SMA Actuator based on inverse hysteresis compensation

Hongyan Luo, Qingyun Yang, Eric Abel, Zhigang Wang, Y.J. Liao

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    Abstract

    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.
    Original languageEnglish
    Title of host publicationApplied Mechanics and Materials
    Pages1771-1776
    Number of pages6
    Volume52-54
    DOIs
    Publication statusPublished - 2011

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    Luo, H., Yang, Q., Abel, E., Wang, Z., & Liao, Y. J. (2011). Improved adaptive control of SMA Actuator based on inverse hysteresis compensation. In Applied Mechanics and Materials (Vol. 52-54, pp. 1771-1776) https://doi.org/10.4028/www.scientific.net/AMM.52-54.1771