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Piezoelectric stack actuator parameter extraction with hysteresis compensation
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| Author(s) |
Tiberiu-Gabriel ZSURZSAN, Charles MANGEOT, Michael ANDERSEN, Zhe ZHANG, Nils Axel ANDERSEN |
| Abstract |
The Piezoelectric Actuator Drive (PAD) is a type of rotary motor that transforms the linear motion ofpiezoelectric stack actuators into a precise rotational motion. The very high stiffness of the actuatorsemployed make this type of motor suited for open-loop control, but the inherent hysteresis exhibited bypiezoelectric ceramics causes losses.Therefore, this paper presents a straightforward method to measure piezoelectric stack actuator equiv-alent parameters that includes nonlinearities. By folding the nonlinearities into a newly-defined cou-pling coefficient, the inherent hysteretic behavior of piezoelectric stack actuators can be greatly reducedthrough precompensation. Experimental results show a fitting accuracy of 98.8 \% between the modeland measurements and a peak absolute error reduction by a factor of 10 compared to the manufacturer-provided parameter. This method improves both the static and dynamic performance of the PiezoelectricActuator Drive (PAD) while still permitting open-loop control. |
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| Filename: | 0423-epe2014-full-13390427.pdf |
| Filesize: | 315.5 KB |
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| Type |
Members Only |
| Date |
Last modified 2015-06-08 by System |
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