The inverse of a recently proposed hysteresis and creep circuit model is proposed and discussed. The model is particularly suitable for piezoelectric actuators and its inverse can be used for open-loop compensation of the undesired nonlinearities in high-precision applications. The inversemodel is defined, analyzed in terms of conditions ensuring a correct compensation, and discretized to provide a digital compensation algorithm suitable for implementation in low-cost programmable devices. Quantitative results on experimental data are provided and discussed, including the compensation on an atomic force microscope.
Open-Loop Compensation of Hysteresis and Creep Through a Power-Law Circuit Model
OLIVERI, ALBERTO;STELLINO, FLAVIO;CALUORI, GUIDO;PARODI, MAURO;STORACE, MARCO
2016-01-01
Abstract
The inverse of a recently proposed hysteresis and creep circuit model is proposed and discussed. The model is particularly suitable for piezoelectric actuators and its inverse can be used for open-loop compensation of the undesired nonlinearities in high-precision applications. The inversemodel is defined, analyzed in terms of conditions ensuring a correct compensation, and discretized to provide a digital compensation algorithm suitable for implementation in low-cost programmable devices. Quantitative results on experimental data are provided and discussed, including the compensation on an atomic force microscope.File in questo prodotto:
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