Nonlinear cross-coupling of a 2-DOF piezoelectric actuator with multi-channel Hammerstein model
- Resource Type
- Conference
- Authors
- Hu, Bo; Zhang, Hai-Tao; Chen, Zhi-Yong
- Source
- 2017 36th Chinese Control Conference (CCC) Control Conference (CCC), 2017 36th Chinese. :1196-1201 Jul, 2017
- Subject
- Computing and Processing
Robotics and Control Systems
Signal Processing and Analysis
Transportation
Mathematical model
Piezoelectric actuators
Nonlinear dynamical systems
Analytical models
Matrix decomposition
Computational modeling
Piezoelectric actuator
nonlinear dynamic
Hammerstein model
- Language
- ISSN
- 1934-1768
Commercial piezoelectric actuated stages usually has been decoupling designed from the mechanical structure. This paper develops a piezoelectric actuated stage (P-563.3CD) experiment platform. Observed cross-coupling effect in the piezo-stage is below 1%. In order to improve the performance of piezo-stage in a further step, a multi-channel Hammerstein model is developed to describe the cross-coupling nonlinearity. Further more, the position voltage is introduced into Hammerstein model to modify the performance of the proposed approach. To the end, verification experiments are exhibited.