Title :
High precision control for nano-positioner actuated by smart materials
Author_Institution :
Shibaura Inst. of Technol., Saitama, Japan
Abstract :
The nano-positioner is composed of two piezo electric actuators (PEA) and a positioning mechanism (PM). Due to existence of hysteretic nonlinearity in the PEA and the friction in the PM, the high precision control for the positioner is a challenging task. This paper discusses the high precision adaptive control for the positioner, where the hysteresis is described by Prandtl-Ishlinskii model. The proposed control law ensures the global stability of the controlled stage, and the position error can be controlled to approach to zero asymptotically. Experimental results show the effectiveness of the proposed method.
Keywords :
adaptive control; control nonlinearities; hysteresis; intelligent materials; nanopositioning; piezoelectric actuators; Prandtl-Ishlinskii model; global stability; high precision adaptive control; hysteretic nonlinearity; nano-positioner; piezo electric actuators; positioning mechanism; smart materials; Actuators; Adaptation models; Density functional theory; Force; Hysteresis; Mathematical model; Stability analysis; High Precision Control; Hysteresis; Nano-Positioner; Piezo Electric Actuators;
Conference_Titel :
Control Conference (CCC), 2011 30th Chinese
Conference_Location :
Yantai
Print_ISBN :
978-1-4577-0677-6
Electronic_ISBN :
1934-1768
