A Synthetic Shunt For Piezoelectric-Based State Switching

Abstract

Piezoelectric-based state switching selectively switches between available stiffness states. Some state switching methods require switching from a high- to low-stiffness state at points in the vibration cycle of non-zero strain, resulting in a rapid dissipation of the stored piezoelectric voltage, and a corresponding rapid variation in the system stiffness. This manner of switching induces high-frequency, large-amplitude mechanical transients that are unavoidable and is analogous to an impact, where increasing the switch duration reduces the range of modes excited. Recent develops show that controlling the duration of the voltage dissipation by means of a resistor in the shunt circuit significantly reduces these induced transients; however, incorporating a resistor in the shunt can introduce damping which may be undesirable, depending on the application. As such, this paper numerically investigates an alternate method of controlling the duration of the switch via a variable capacitance shunt.

Publication Date

1-1-2018

Publication Title

Proceedings of SPIE - The International Society for Optical Engineering

Volume

10595

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1117/12.2296792

Socpus ID

85048052125 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85048052125

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