Journal of Institute of Control, Robotics and Systems (제어로봇시스템학회논문지)

Institute of Control, Robotics and Systems (제어로봇시스템학회)
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Preisach Model of Shape Memory Alloy Actuators Using Proportional Relationship of The Major Loop of Hysteresis

히스테리시스 주 루프의 비례관계를 이용한 형상기억합금 엑츄에이터의 Preisach 모델

  • Choe, Byeong-Jun (Dept.of Electronics Engineering, Kyungpook National University) ;
  • Lee, Yeon-Jeong (Dept.of Electronics Engineering, Kyungpook National University) ;
  • Choe, Bong-Yeol (Dept.of Electronics Engineering, Kyungpook National University)
  • Published : 2002.09.01
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Abstract

There has been a great demand for smart actuators in the field of micro-machines. However, the control accuracy of smart actuators, e.g., a shape memory alloy(SMA) and a piezoceramic actuator, is limited due to the inherent hysteresis nonlinearity. The Preisach hysteresis model has emerged as an appropriate model f3r the behavior of those smart actuators. Yet it is still not easy to construct a practical model of hysteresis using the classical Preisach model. Accordingly, in this paper, we propose a new simple method for modeling of the hysteresis nonlinearity of SMA. Using only the proportional relation of the major loop of hysteresis, the proposed method makes the computation of the Preisach model easy. We prove the efficacy of the proposed model through the comparative the experimentation with the classical Preisach model.

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References

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