An active disturbance rejection controller with hysteresis compensation for piezoelectric actuators
| Autor: | Weichuan Liu, Zeng-Guang Hou, Min Tan, Long Cheng |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
0209 industrial biotechnology
Engineering business.industry Voltage control Load modeling 020208 electrical & electronic engineering Control engineering 02 engineering and technology Transient analysis Nonlinear system 020901 industrial engineering & automation Control theory 0202 electrical engineering electronic engineering information engineering Piezoelectric actuators State observer business |
| Zdroj: | 2016 12th World Congress on Intelligent Control and Automation (WCICA). |
| DOI: | 10.1109/wcica.2016.7578591 |
| Popis: | Piezoelectric Actuators (PEAs) are the key components in nano-positioning. However, the inherent hysteresis nonlinearity of PEAs is seriously affected the control precision. In this paper, an active disturbance rejection controller is proposed to deal with the tracking control of PEAs. First, the hysteresis nonlinearity is reformulated as a disturbance of the closed-loop system. With this idea, a disturbance-based model is derived from the comprehensive model of PEAs. Then the so-called extended state observer is introduced to real-time estimate the hysteresis nonlinearity. With the extended state observer, the model of hysteresis or its inversion are all no longer needed. To verify the performance of the proposed method, some experiments are conducted on a commercial PEA. And the experiment results show that the proposed controller is an effective way to deal with the tracking control of PEAs. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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