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Abstract

This article presents interesting results on passive and active damping characteristics of ionic polymer metal composite (IPMC) as smart actuator. Passive damping characteristics of IPMC have been evaluated experimentally to find out its material loss factor and damping coefficient. The exciting properties of generating high strains and large bending with low actuation voltage make IPMC an alternative smart actuator to control high amplitude structural vibration. IPMC patches have been experimented for active vibration control for a large flexible motion with both known and unknown vibration sources. A simple proportional controller scheme has been proposed and employed to control known vibration with a host large flexible link while single and two loop independent distributed PD controllers have been employed for unknown vibration to assess the damping characteristics. It is demonstrated that for low amplitude vibration IPMC patches can be used as passive damper and for high amplitude structural vibration IPMC can be used successfully as smart actuator.

Keywords

electro-active polymer ionic polymer metal composite PD control loss factor distributed bending moment.

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Characterization of IPMC as Passive and Active Damper as an Alternative Novel Smart Actuator

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