Biologically inspired control for artificial muscles

Robert C. Richardson; Kevin Watterson; Mike D. Brown; Martin C. Levesley; Jamie A. Hawkes; Peter G. Walker

doi:10.1117/12.475178

11 July 2002 Biologically inspired control for artificial muscles

Robert C. Richardson, Kevin Watterson, Mike D. Brown, Martin C. Levesley, Jamie A. Hawkes, Peter G. Walker

Proceedings Volume 4695, Smart Structures and Materials 2002: Electroactive Polymer Actuators and Devices (EAPAD); (2002) https://doi.org/10.1117/12.475178
Event: SPIE's 9th Annual International Symposium on Smart Structures and Materials, 2002, San Diego, California, United States

Abstract

New actuator technologies are moving closer towards the creation of artificial muscles. For these muscles to behave in synergy with natural human muscle then they must be controlled in a similar manner. It has been postulated that the control of human motion is achieved through a force and position control strategy termed impedance control. An impedance controller has been developed for implementation on an ionic polymer-metal composite (IPMC) actuator. The basis for this controller is a PID position controller that is demonstrated to accurately control the position response of the IPMC actuator. This position controller is extended to form an impedance controller with a force control loop and impedance filter. Inspite of identified non-linearities in the polymer force output during motion, the impedance controller has been successfully implemented demonstrating the controller design process and good performance of the control strategy.

Citation Download Citation

Robert C. Richardson, Kevin Watterson, Mike D. Brown, Martin C. Levesley, Jamie A. Hawkes, and Peter G. Walker "Biologically inspired control for artificial muscles", Proc. SPIE 4695, Smart Structures and Materials 2002: Electroactive Polymer Actuators and Devices (EAPAD), (11 July 2002); https://doi.org/10.1117/12.475178

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