Virtual Piezoelectric Vibration Absorber with LR Parallel Shunt Circuit

Abstract:

A virtual piezoelectric vibration absorber with LR Parallel shunt circuit was developed to emulate the effect of a physical piezoelectric shunt damper. A controller was designed and the feedback structure according to the LR parallel shunt circuit was suggested by using the governing equations of piezoelectric shunt damping system. The inductor L and resistor R only “exist” as numerical representations inside the controller. The virtual piezoelectric vibration absorber can both eliminate the need for large inductor and tune circuit component parameters online to adapt to environmental changes. Therefore the two disadvantages of the physical piezoelectric shunt damper are overcome. The simulation results for a cantilever beam show the effectiveness of the Virtual piezoelectric vibration absorber for vibration suppression.

• Periodical: Advanced Materials Research (Volumes 479-481)
• Pages: 1165-1168
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.479-481.1165
• Online since: February 2012
• Authors: Ning Li
• Keywords: Piezoelectric Shunt Damping, Shunt Circuit, Vibration Control, Virtual Absorber

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