Study of polarization control model for piezoelectric actuator
1Automation College, Harbin Engineering University, Harbin 150001, People's Republic of China. rchhai@yahoo.com.cn <rchhai@yahoo.com.cn>
Ultrasonics
|June 30, 2006
Summary
Controlling polarization significantly reduces hysteresis in piezoelectric actuators, improving their accuracy. This new polarization control method offers better linearity and less hysteresis compared to traditional voltage control.
Area of Science:
- Materials Science
- Mechanical Engineering
- Control Systems
Background:
- Piezoelectric actuators exhibit hysteresis, limiting their control accuracy.
- Hysteresis in piezoelectric actuators is a major challenge in precise motion control.
- Understanding the microscopic polarization mechanism and domain wall theory is crucial.
Purpose of the Study:
- To explain how controlling polarization can reduce hysteresis in piezoelectric actuators.
- To analyze the reasons for hysteresis in voltage control mode.
- To develop and evaluate a novel polarization-based control model.
Main Methods:
- Analysis of microscopic polarization mechanism and domain wall theory.
- Derivation of a control model based on polarization.
- Experimental realization of the polarization control method by managing actuator charge.
Main Results:
- The polarization control method demonstrates significantly improved linearity.
- Experimental results show a marked reduction in hysteresis compared to voltage control.
- The derived polarization control model effectively addresses actuator hysteresis.
Conclusions:
- Controlling polarization is an effective strategy to mitigate hysteresis in piezoelectric actuators.
- The developed polarization control method offers superior performance over traditional voltage control.
- This research provides a pathway for enhanced precision in piezoelectric actuator applications.
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