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Interval model of the piezoelectric drive

Piezoelectric drives are widely used as high precision actuators. The paper deals with the design of interval models for studying of piezoelectric drive's dynamic. Results of such studying can be used for the construction of a precise position control system for a piezoelectric drive. We propose to design an interval model by defining some intervals where piezoelectric motor nonlinearity and uncertainty exist. We show some benefits of the proposed approach for modeling of piezoelectric drive and approve them by given simulations' results.