Classical Prandtl-Ishlinskii modeling and inverse multiplicative structure to compensate hysteresis in piezoactuators.

International audienceThis paper presents a new approach to compensate the static hysteresis in smart material based actuators that is modeled by the Prandtl- Ishlinskii approach. The proposed approach allows a simplicity and ease of implementation. Furthermore, as soon as the direct model is identi ed and obtained, the compensator is directly derived. The experimental results on piezoactuators show its e ciency and prove its interest for the precise control of microactuators without the use of sensors. In particular, we exper- imentally show that the hysteresis of the studied actuator which was initially 23% was reduced to less than 2:5% for the considered working frequency