Position control of shape memory alloy actuators with load and frequency dependent hysteresis characteristics

Jeffrey R. Hill; K. W. Wang; Jin-Ho Roh

doi:10.1117/12.815627

3 April 2009 Position control of shape memory alloy actuators with load and frequency dependent hysteresis characteristics

Jeffrey R. Hill, K. W. Wang, Jin-Ho Roh

Author Affiliations +

Proceedings Volume 7286, Modeling, Signal Processing, and Control for Smart Structures 2009; 728609 (2009) https://doi.org/10.1117/12.815627
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2009, San Diego, California, United States

Abstract

The hysteresis for shape memory alloy (SMA) actuators has been shown to undergo large changes in response to the applied loading frequency and amplitude. This paper demonstrates the methodology needed to model and control SMA actuators assuming a variable load frequency and amplitude. A one-dimensional model of an SMA actuator which accounts for the strain-dependent hysteresis of SMA actuators is derived. Moreover, a model based control algorithm is developed to control the position of the SMA actuator. Numerical simulations are performed to examine the approach.

Citation Download Citation

Jeffrey R. Hill, K. W. Wang, and Jin-Ho Roh "Position control of shape memory alloy actuators with load and frequency dependent hysteresis characteristics", Proc. SPIE 7286, Modeling, Signal Processing, and Control for Smart Structures 2009, 728609 (3 April 2009); https://doi.org/10.1117/12.815627

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