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Piezoelectric actuators having the characteristics of infinitely small displacement resolution are popularly applied as actuators in precision-positioning systems. Due to their nonlinear hysteresis effects, the tracking control accuracy of the precision positioning system is difficultly achieved. Hence, it is desirable to take hysteresis effect into consideration for improving the trajectory tracking...
It was shown that the maximum tracking error caused by the nonlinear hysteresis phenomena can be as much as 10-15% of the traveling path if the piezoelectric actuator was operated in the open voltage driving loop system. Owing to its nonlinear hysteresis effect, the tracking control accuracy of the precision positioning system is difficultly achieved. Hence, it is desirable to take hysteresis effect...
Piezoelectric (PZT) actuators are popularly applied as actuators in micro-positioning systems due to its characteristic of infinitely small displacement resolution. Piezoelectricity material has nonlinear hysteresis phenomena. Owing to its nonlinear hysteresis effect, the tracking control accuracy of the precision positioning system is difficultly achieved. Hence, it is desirable to take hysteresis...
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