Predictive position and force control for shape memory alloy cylinders

Nguyen, Trong Tai, Nguyen, Bao Kha and Ahn, Koung Kwan (2010) Predictive position and force control for shape memory alloy cylinders. Journal of Mechanical Science and Technology, 24 (8). pp. 1717-1728. ISSN 1738-494X

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Abstract

In this paper, a linear lightweight electric cylinder constructed using shape memory alloy (SMA) is proposed. Spring SMA is used as the actuator to control the position and force of the cylinder rod. The model predictive control algorithm is investigated to compensate SMA hysteresis phenomenon and control the cylinder. In the predictive algorithm, the future output of the cylinder is computed based on the cylinder model, and the control signal is computed to minimize the error and power criterion. The cylinder model parameters are estimated by an online identification algorithm. Experimental results show that the SMA cylinder is able to precisely control position and force by using the predictive control strategy though the hysteresis effect existing in the actuator. The performance of the proposed controller is compared with that of a conventional PID controller.

Item Type: Article
Keywords: SMA cylinder, Force, Position, Predictive control, Real time, Online estimation, Online identification
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Subjects: T Technology
T Technology > TJ Mechanical engineering and machinery
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Depositing User: Bao Kha Nguyen
Date Deposited: 14 Jul 2017 15:24
Last Modified: 14 Jul 2017 15:24
URI: http://sro.sussex.ac.uk/id/eprint/69288
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