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Smart materials are now widely used in fields such as aerospace, transportation, medical, and defense. However, their inherent dynamic hysteresis nonlinearity characteristics not only affect system control precision but can also cause system oscillation. This article focuses on piezoelectric actuators, researching the modeling and active disturbance rejection control of dynamic hysteresis nonlinear systems. Initially, a Hammerstein dynamic hysteresis model based on continuous PI was established. Based on the proposed model, a linear known active disturbance rejection control algorithm for piezoelectric actuators was designed. Finally, the model and control algorithm were verified on a constructed piezoelectric actuator prototype and testing system, with the errors analyzed by comparing them against numerical simulation results.

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Dynamic Hysteresis Self-adaptive Control of Amplified Piezoelectric Actuators for Complex Operating Conditions

  • 会议论文

  • 发表日期：

    2025年

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  • Xiao Wu,
  • Taike Yao,
  • Xingjian Wang,
  • Di Liu,
  • Shaoping Wang,
  • Yaoxing Shang

摘要

Smart materials are now widely used in fields such as aerospace, transportation, medical, and defense. However, their inherent dynamic hysteresis nonlinearity characteristics not only affect system control precision but can also cause system oscillation. This article focuses on piezoelectric actuators, researching the modeling and active disturbance rejection control of dynamic hysteresis nonlinear systems. Initially, a Hammerstein dynamic hysteresis model based on continuous PI was established. Based on the proposed model, a linear known active disturbance rejection control algorithm for piezoelectric actuators was designed. Finally, the model and control algorithm were verified on a constructed piezoelectric actuator prototype and testing system, with the errors analyzed by comparing them against numerical simulation results.