Changhai, Ru and Lining, Sun (2005) Hysteresis and creep compensation for piezoelectric actuator in open-loop operation. Sensors and Actuators A: Physical, 122 (1). 124 - 130.
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Official URL: http://www.sciencedirect.com/science/article/B6THG...
Piezoelectric actuators are frequently used nowadays in a wide variety of positioning devices. However, a major deficiency of piezoelectric actuators is that their open-loop control accuracy is seriously limited by hysteresis and creep effects. This paper describes a method for simultaneous compensation of the hysteresis and creep of piezoelectric actuator based on an inverse control in open-loop operation. The basis of the inverse control is formed by a hysteresis mathematical model and a creep model, which can describe precisely two phenomena. The method of solving inverse models of hysteresis and creep is described detailedly. Finally, a tracking control experiment of piezoelectric actuators for a desired trajectory is performed according to the proposed method and the experimental results demonstrate that the positioning precision is noticeably improved in open-loop operation compared to the conventional open-loop control without any compensation.
|Additional Information:||SSSAMW 04 - Special Section of the Micromechanics Section of Sensors and Actuators based on contributions revised from the Technical Digest of the 2004 Solid-State Sensor, Actuator and Microsystems Workshop.|
|Uncontrolled Keywords:||Piezoelectric actuator; Hysteresis; Creep; Inverse control|
|Subjects:||Analytical Science > Nanotechnology for sensing and actuating|
|Deposited On:||08 Apr 2009 17:31|
|Last Modified:||08 Apr 2009 17:31|
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