Title :
Charge pump controller for grounded piezoelectric actuators used in precise positioning
Author :
Ma, Y.T. ; Feng, Z.H. ; Huang, Liwen ; Zhang, L.S.
Author_Institution :
Dept. of Precision Machinery & Precision Instrum., Univ. of Sci. & Technol. of China, Hefei, China
Abstract :
A charge pump controller adapted for grounded piezoelectric loads is proposed. By transferring charge packets into the piezoelectric actuator step by step, the actuator deforms with much less hysteresis and ultra-high resolution. Compared with voltage drive, the actuator hysteresis is reduced by 71-83- over a frequency range of 0.01-0.1-Hz.
Keywords :
charge pump circuits; hysteresis; piezoelectric actuators; position control; precision engineering; actuator hysteresis; charge packet transfer; charge pump controller; frequency 0.01 Hz to 0.1 Hz; grounded piezoelectric actuators; grounded piezoelectric loads; precise positioning; ultra-high resolution;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2011.1109
