Research on the influence of structural vibration of energy-manipulated piezoelectric shunt branch
Piezoelectric materials are often used in the fields of vibration energy harvesting and structural vibration suppression due to the excellent electromechanical coupling characteristics.This paper introduces a new shunt with switchable and manipulable force(mechanical)and electrical energy,using the primary and secondary energy conversion function of the flyback transformer based on the existing switching piezoelectric shunt.Based on the positive and negative piezoelectric effects,this paper designs the branch circuits for absorbing energy to suppress vibration and injecting energy to control vibration respectively,resulting in a highly efficient and stable structural vibration control system.The paper introduces the operating principles of the proposed new piezoelec-tric shunt branch and derives the decay rate models of structural amplitude under different energy manipulation conditions.The rela-tionship between the effect of different energy manipulation methods and the amplitude of the structure is discussed through experi-ments.Results show that the introduced energy-manipulated shunt branch can realize highly efficient structural vibration suppres-sion depending on the damping requirements of actual scenarios.
vibration controlvibration energy harvestingpiezoelectric shunt branchflyback transformerpiezoelectric cantilever beam
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维普
