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- W3204718774 abstract "High performance motion control of piezoelectric nanopositioners is crucial for a wide range of applications. The primary challenges stem from several aspects, including hysteresis and creep effects, along with the lightly damped mechanical resonance. In view of these issues, this paper proposes a comprehensive charge-based motion control solution, including a generalized electromechanical model, a charge controller with non-resistive DC stabilization and a robust charge control (RCC) strategy. The advantages of charge-based control in system identification and controller design are clearly indicated. Towards this solution, a generalized model of piezoelectric nanopositioner is first proposed, showing the effectiveness of charge control approach in the presence of arbitrarily complicated mechanical dynamics. Furthermore, we present a charge controller with a simple configuration, which eliminates the frequency-dependent performance of classical controller design. This guarantees consistently high control performance over the full operating bandwidth. Finally, to deal with the mechanical resonance and remaining nonlinearities and uncertainties, we propose a control strategy that combines charge control and robust feedback control into a single framework. Superior tracking and damping control performance of the proposed solution is confirmed by extensive experimental validations. • A generalized model of piezoelectric positioner is developed for controller design.. • The proposed solution eliminates the necessities of identifying nonlinear models. • A charge controller with non-resistive DC stabilization is proposed and implemented. • Experiments demonstrate the excellent performance of charge-based control strategy." @default.
- W3204718774 created "2021-10-11" @default.
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- W3204718774 date "2022-03-01" @default.
- W3204718774 modified "2023-10-17" @default.
- W3204718774 title "Comprehensive study of charge-based motion control for piezoelectric nanopositioners: Modeling, instrumentation and controller design" @default.
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- W3204718774 doi "https://doi.org/10.1016/j.ymssp.2021.108477" @default.
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