Behavioral implications of piezoelectric stack actuators for control of micromanipulation
نویسندگان
چکیده
A lumped-parameter model of a piezoelectric stack actuator has been developed to describe actuator behavior for purposes of control system analysis and design, and in particular for microrobotic applications requiring accurate position and/or force control. In addition to describing the input-output dynamic behavior, the proposed model explains aspects of non-intuitive behavioral phenomena evinced by piezoelectric actuators, such as the input-output rate-independent hysteresis and the change in mechanical stiffness that results from altering electrical load. The authors incorporate a generalized Maxwell resistive capacitor as a lumpedparameter causal representation of rate-independent hysteresis. Model formulation is validated by comparing results of numerical simulations to experimental data.
منابع مشابه
Modeling Piezoelectric Stack ALctuators for Control of Micromanipulation
nonlinear lumped-parameter model of a piezoelectric stack A, ctuator has been developed to describe actuator behavior for purposes of control system analysis and design, and, in particular, for microrobotic applications requiring accurate position andor force control. In formulating this model, the authors propose a generalized Maxwell resistive capacitor as a lumped-parameter causal representa...
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