Position control of shape memory alloy actuators using self tuning fuzzy PID controller

K.K. Ahn, Bao Kha Nguyen

Research output: Contribution to journalArticle

58 Citations (Scopus)

Abstract

Shape Memory Alloy (SMA) actuators, which have the ability to return to a predetermined shape when heated, have many potential applications such as aeronautics, surgical tools, robotics and so on. Although the conventional PID controller can be used with slow response systems, there has been limited success in precise motion control of SMA actuators, since the systems are disturbed by unknown factors beside their inherent nonlinear hysteresis and changes in the surrounding environment of the systems. This paper presents a new development of a SMA position control system by using a self-tuning fuzzy PID controller. This control algorithm is used by tuning the parameters of the PID controller thereby integrating fuzzy inference and producing a fuzzy adaptive PID controller, which can then be used to improve the control performance of nonlinear systems. The experimental results of position control of SMA actuators using conventional and self-tuning fuzzy PID controllers are both included in this paper.
Original languageEnglish
Pages (from-to)756-762
Number of pages7
JournalInternational Journal of Control Automation and Systems
Volume4
Issue number6
Publication statusPublished - Dec 2006

ASJC Scopus subject areas

  • Control and Systems Engineering

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