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Modeling of Piezoelectric-Driven Stick–Slip Actuators

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2 Author(s)
Peng, J.Y. ; Dept. of Mech. Eng., Univ. of Saskatchewan, Saskatoon, SK, Canada ; Chen, X.B.

Piezoelectric-driven stick-slip actuators have been drawing extensive attention in various applications of long-range and ultraprecision positioning. In such an actuator, the dynamics of the end-effector displacement is of importance for its design and control, yet challenging to be modeled due to the complexity involved. By taking into account the linear dynamics and hysteretic behavior of the piezoelectric actuator (PEA), as well as the presliding friction on the end-effector, a model representative of the end-effector displacement is presented in this paper. The effectiveness of the developed model is illustrated by the experiments on the piezoelectric-driven stick-slip actuator prototyped in the authors' laboratory.

Published in:

Mechatronics, IEEE/ASME Transactions on  (Volume:16 ,  Issue: 2 )

Date of Publication:

April 2011

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