A Novel Passive Vibration Control Method of Piezoelectric Smart Cantilever Beam with Shunt Circuit Based on Switching Stiffness

Qi, Rui; Wang, Liang; Jin, Jiamei; Yuan, Lusheng; Li, Rui; Ge, Yuning

doi:10.2139/ssrn.4339667

Cited by 1 publication

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“…SSD approaches switch the piezoelectric element on two distinct shunt impedances synchronously with the vibrations of the structure. Hence, these approaches can regulate the stiffness of structures through piezoelectric elements in open circuit states and obtain hysteresis cycles able to dissipate the mechanical energy 12 . Theoretically, this kind of technique can achieve the desired level of mitigation of structural vibrations without requiring high external energy consumption and inducing heavy weight 13 .…”

Section: Introductionmentioning

confidence: 99%

Bidirectional energy‐controlled piezoelectric shunt damping technology and its vibration attenuation performance

Wu,

Yuan,

Ren

et al. 2024

Int Journal of Mech Sys Dyn

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Piezoelectric material‐based semi‐active vibration control systems may effectively suppress vibration amplitude without any external power supply, or even harvest electrical energy. This bidirectional electrical energy control phenomenon is theoretically introduced and validated in this paper. A flyback transformer‐based switching piezoelectric shunt circuit that can extract energy from or inject energy into piezoelectric elements is proposed. The analytical expressions of the controlled energy and the corresponding vibration attenuation are therefore derived for a classical electromechanical cantilever beam. Theoretical predictions validated by the experimental results show that the structure vibration attenuation can be tuned from −5 to −25 dB under the given electrical quality factor of the circuit and figure of merit of the electromechanical structure, and the consumed power is in the range of −13 to 25 mW, which is a good theoretical basis for the development of self‐sensing, self‐adapting, and self‐powered piezoelectric vibration control systems.

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Section: Introductionmentioning

confidence: 99%