adaptive control of piezoelectric actuators
碩士 === 國立臺灣科技大學 === 機械工程系 === 92 === Many industrial piezoelectric actuators have hysteresis nonlinearity. Today, general piezo models can not entirely describe the dynamics behavior of piezoelectric actuators. So, it is a challenge to design an inversion based controller based on these piezo models...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2004
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| Online Access: | http://ndltd.ncl.edu.tw/handle/82468371452483699923 |
| Summary: | 碩士 === 國立臺灣科技大學 === 機械工程系 === 92 === Many industrial piezoelectric actuators have hysteresis nonlinearity. Today, general piezo models can not entirely describe the dynamics behavior of piezoelectric actuators. So, it is a challenge to design an inversion based controller based on these piezo models. In this paper, we apply the piezo model which was built and modeled by Low and Guo and regard un-modeled hystersis effect as disturbance of system state feedback. We used function approximation technique to improve the effect of this system disturbance; moreover, overcome the system input and state feedback disturbance. Update laws for the weighting vectors are selected using the Lyapunov method so that asymptotic convergence of the output error can be proved. Experimental results confirm the feasibility of the proposed scheme.
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