Publisher： Trans Tech Publications
E-ISSN： 1662-0356|2016|97|75-80
ISSN： 1662-8969
Source： Advances in Science and Technology, Vol.2016, Iss.97, 2017-01, pp. : 75-80
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Abstract
Tri-layer electroactive bending polymeric artificial muscles generally exhibit no overshoot during open-loop step response with a non-zero initial slope when the output is the vertical position of the bending sample tip. We propose to identify such a bending step contraction by a nonlinear system derived from a linear first order system in the form: where the parameters k, T and r depend on the u-control voltage. We show the relevance of this approach for identifying the step-response of a PEDOT:PSS/PVDF/ionic liquid actuator developed at the laboratory. As a consequence, we try to show that a linear PI-controller, including voltage constraints, is a simple and an efficient approach for a closed-loop control of the bending actuator.
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