Design, modeling and experimental research of a multi-mode, fast-response piezoelectric control valve

Pang, Yuanjie; Wang, Liang; Jin, Jiamei

doi:10.1016/j.mechatronics.2023.103113

Cited by 2 publications

(1 citation statement)

References 8 publications

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“…Actuators and sensors made from smart materials (such as piezoelectric ceramics, magnetostriction, and shape memory alloys) are widely used in mechatronic systems like precision instruments and high-end equipment due to their high-resolution and fastresponse characteristics. Applications include piezoelectric precision positioning mechanisms [1], atomic force microscopes [2], piezoelectric valves [3], and rapid tool servo systems [4]. However, the hysteresis present in smart materials often severely degrades the performance of mechatronic systems and can even lead to system instability [5].…”

Section: Introductionmentioning

confidence: 99%

Adaptive Backstepping Time Delay Control for Precision Positioning Stage with Unknown Hysteresis

Li,

Weng

et al. 2024

Mathematics

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Piezoelectric-actuated precision positioning stages are widely used in high-precision instruments and high-end equipment due to their advantages of high resolution, fast response, and compact size. However, due to the strong nonlinearity of hysteresis, the presence of hysteresis in piezoelectric actuators seriously affects the positioning accuracy of the system. In addition, it is challenging to identify the model parameters for hysteresis. In this paper, an adaptive backstepping time delay control method is proposed for piezoelectric devices system with unknown hysteresis. Firstly, the Bouc–Wen model is used to describe the hysteresis characteristics, and the model is interpreted as a linear term and a bounded uncertain hysteresis term. Then, the time delay estimation technique is used to estimate the hysteresis term of the Bouc–Wen model online, and the unknown parameters of the system and hysteresis model are obtained through adaptive updating laws. Furthermore, the stability of the control scheme is proved based on Lyapunov stability theory. Finally, the effectiveness and superiority of the proposed control scheme are demonstrated by comparing it with two typical hysteresis compensation control algorithms through three different sets of input signals.

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Section: Introductionmentioning

confidence: 99%

Adaptive Backstepping Time Delay Control for Precision Positioning Stage with Unknown Hysteresis

Li,

Weng

et al. 2024

Mathematics

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Nonlinear behavior and energy harvesting performance of a new tunable quasi-zero stiffness system

Wang,

Kang,

Zhang

2024

Sci Rep

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Energy harvesting from vibrations is a popular research topic. However, it is difficult to change the values of its dynamic stiffness characteristics during the operation of device. This paper analyzes the nonlinear dynamical behavior and energy harvesting performance of an energy harvesting device with a gear unit and an inertial amplifier. The Melnikov method is used to discriminate the chaos behavior of the system and is illustrated by numerical simulations. Chaotic dynamics analysis provides a simplified analytical idea that offers more insight into the performance of this energy harvesting device. In addition, the basins of attraction of the coexistence solution of the system are plotted, and the trajectory and energy harvesting efficiency of the system are analyzed for changes in the initial value. The results show that the device has the convenience to change the form and efficiency of system energy harvesting. The theory of Melnikov functions recognizes the presence of chaos and can provide solutions for the parameterization of the system. The choice of initial value greatly affects the energy harvesting efficiency.

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Design, modeling and experimental research of a multi-mode, fast-response piezoelectric control valve

Cited by 2 publications

References 8 publications

Adaptive Backstepping Time Delay Control for Precision Positioning Stage with Unknown Hysteresis

Adaptive Backstepping Time Delay Control for Precision Positioning Stage with Unknown Hysteresis

Nonlinear behavior and energy harvesting performance of a new tunable quasi-zero stiffness system

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