11 July 2002 Control system for conducting polymer actuators
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Abstract
Although conducting polymer (CP) actuators can operate with just a few volts and generate much higher forces than natural muscle, their poor dynamic performance limits their applications. A control system scheme to increase their dynamic performance is presented in this paper, based on the analysis of CP actuator models. By using a closed-loop control system, the potential abilities of CP actuators are exploited more fully. Experimental results show that, for a CP actuator fabricated from a commercially available polyaniline fiber PANIONT and an aqueous HCl electrolyte, use of a control system in the oxidization process, decreased settling time (transient time) by 87.4%; in the reduction process, settling time decreased more than 94.2%. The performance improvements from using control systems depend on the maximum signal the CP actuator can be burdened with, not simply on the performance of the CP actuators themselves. The possibilities and limitations of actuator control systems may determine the CP actuators that can eventually be incorporated into practical devices.
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Baohua Qi, Wen Lu, Benjamin R. Mattes, "Control system for conducting polymer actuators", Proc. SPIE 4695, Smart Structures and Materials 2002: Electroactive Polymer Actuators and Devices (EAPAD), (11 July 2002); doi: 10.1117/12.475183; https://doi.org/10.1117/12.475183
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