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Predictive position and force control for shape memory alloy cylinders

journal contribution
posted on 2023-06-09, 07:14 authored by Trong Tai Nguyen, Bao Kha NguyenBao Kha Nguyen, Koung Kwan Ahn
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.

History

Publication status

  • Published

Journal

Journal of Mechanical Science and Technology

ISSN

1738-494X

Publisher

Springer Verlag

Issue

8

Volume

24

Page range

1717-1728

Department affiliated with

  • Engineering and Design Publications

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2017-07-14

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