Affiliation:
1. University of Akron Smart Materials and Structures Laboratory, Department of Mechanical Engineering 244 Sumner Street, Akron, Ohio 44313, USA
Abstract
This paper presents design and experiment results of active position control of a shape memory alloy (SMA) wire actuator using a sliding mode based robust approach. In this research, an SMA wire was chosen as an actuating element for position control owing to its high recovery stress (gt;500MPa) and tolerance to high strain (up to 5 per cent). To compensate for the inherent non-linearity associated with the SMA, a sliding mode based robust controller was designed and implemented actively to control the position of the SMA wire actuator. Experiments demonstrated the effectiveness of the robust control. For a 12 in long SMA wire actuator, the position can be controlled within 30m.
Subject
Mechanical Engineering,Control and Systems Engineering
Cited by
3 articles.
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