Sensors 2010, 10(1), 112-127; doi:10.3390/s100100112
Article

Tracking Control of Shape-Memory-Alloy Actuators Based on Self-Sensing Feedback and Inverse Hysteresis Compensation

Department of Mechanical Engineering, National Taiwan University, Taipei, 10617, Taiwan
* Author to whom correspondence should be addressed.
Received: 18 November 2009; in revised form: 15 December 2009 / Accepted: 16 December 2009 / Published: 28 December 2009
(This article belongs to the Special Issue Advances in Actuators)
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Abstract: Shape memory alloys (SMAs) offer a high power-to-weight ratio, large recovery strain, and low driving voltages, and have thus attracted considerable research attention. The difficulty of controlling SMA actuators arises from their highly nonlinear hysteresis and temperature dependence. This paper describes a combination of self-sensing and model-based control, where the model includes both the major and minor hysteresis loops as well as the thermodynamics effects. The self-sensing algorithm uses only the power width modulation (PWM) signal and requires no heavy equipment. The method can achieve high-accuracy servo control and is especially suitable for miniaturized applications.
Keywords: shape memory alloys; self-sensing control; hysteresis model

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MDPI and ACS Style

Liu, S.-H.; Huang, T.-S.; Yen, J.-Y. Tracking Control of Shape-Memory-Alloy Actuators Based on Self-Sensing Feedback and Inverse Hysteresis Compensation. Sensors 2010, 10, 112-127.

AMA Style

Liu S-H, Huang T-S, Yen J-Y. Tracking Control of Shape-Memory-Alloy Actuators Based on Self-Sensing Feedback and Inverse Hysteresis Compensation. Sensors. 2010; 10(1):112-127.

Chicago/Turabian Style

Liu, Shu-Hung; Huang, Tse-Shih; Yen, Jia-Yush. 2010. "Tracking Control of Shape-Memory-Alloy Actuators Based on Self-Sensing Feedback and Inverse Hysteresis Compensation." Sensors 10, no. 1: 112-127.

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