Control Experiments on two SMA based micro-actuators

In this paper, two different control technics for SMA actuators are proposed: a position control and a temperature one. The position controller is based on a two stage (P and PI) structure. The temperature controller uses a PID with a lag compensator in the feedback loop. Both of these simple technics have been designed for integration in micro-actuators. They have been experimented and have shown good performances with regard to perturbations in environmental conditions.

[1]  Paolo Dario,et al.  A miniature steerable end-effector for application in an integrated system for computer-assisted arthroscopy , 1997, Proceedings of International Conference on Robotics and Automation.

[2]  Vincent Hayward,et al.  Controller for a high strain shape memory alloy actuator: quenching of limit cycles , 1997, Proceedings of International Conference on Robotics and Automation.

[3]  David W. L. Wang,et al.  General stability criteria for a shape memory alloy position control system , 1995, Proceedings of 1995 IEEE International Conference on Robotics and Automation.

[4]  R. Andrew Russell,et al.  A novel differential shape memory alloy actuator for position control , 1995, Robotica.

[5]  Vincent Hayward,et al.  Design of shape memory alloy actuator with high strain and variable structure control , 1995, Proceedings of 1995 IEEE International Conference on Robotics and Automation.

[6]  Guillaume Morel,et al.  A new inter-phalangeal actuator for dexterous micro-grippers , 1997, Proceedings of International Conference on Robotics and Automation.