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1. A novel digital charge-based displacement estimator for sensorless control of a grounded-load piezoelectric tube actuator.

Author

Bazghaleh, Mohsen, Grainger, Steven, Mohammadzaheri, Morteza, Cazzolato, Ben, and Lu, Tien-Fu

Subjects
*SENSORLESS control systems, *PIEZOELECTRIC actuators, *ARTIFICIAL neural networks, *HIGH voltages, *PARAMETER estimation, *PROPORTIONAL control systems, *BANDWIDTHS
Abstract

Highlights: [•] A grounded-load digital charge-based displacement estimator (GDCDE) is presented. [•] An artificial neural network (ANN) was also designed to estimate the piezoelectric tube's displacement using the piezoelectric voltage at low frequencies of excitation. [•] A complementary filter combines the proposed GDCDE and the ANN to estimate displacement over a wide bandwidth and to overcome drift. [•] The discrepancy between the desired and estimated displacement is fed back to the piezoelectric actuator using proportional control. [Copyright &y& Elsevier]

Published
2013
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