Reduction of major and minor hysteresis loops in a piezoelectric actuator

  • Cruz-Hernandez J
  • Hayward V
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This paper addresses the compensation of major and minor hysteresis loops using an operator termed a phaser which shifts the phase of a periodic signal by an amount φ. For periodic inputs, hysteresis can be approximated by a phaser with a negative phase shift opening the possibility of cascade compensation. Since in actual hysteresis the phase shift varies according to the size of the input, giving rise to minor loops, the possibility exists to handle the compensation of minor loops by using phasers which vary the phase shift according to the magnitude of the input in an inverse fashion. In this paper, this technique is applied to the compensation of a piezoelectric actuator.

Author-supplied keywords

  • Actuators
  • Approximation theory
  • Cascade control systems
  • Hysteresis
  • Mathematical operators
  • Phase shift
  • Piezoelectric actuators
  • Piezoelectric devices

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  • Juan Manuel Cruz-Hernandez

  • Vincent Hayward

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