Modulating structural modal properties via synchronized switch piezoelectric damping with variable phase and voltage

Článek Scopus

en

This work investigates the coupled influence of switching phase shift and external voltage amplitude in the Synchronized Switch Damping on Voltage (SSDV) method on the modal characteristics of a piezoelectric structure. A lumped-parameter electromechanical model was formulated and validated using a hybrid energy harvester setup. Numerical analyses performed over a broad parameter space reveal that the phase shift—traditionally viewed as a performance-degrading factor—can be exploited as a critical control variable for simultaneous damping and stiffness modulation. The findings demonstrate that specific phase–voltage combinations can amplify the achievable resonance frequency shift by up to a factor of two compared to conventional tuning-only strategies. Furthermore, experimental results corroborate that optimized phase-shifted configurations significantly outperform standard zero-phase SSDV. Specifically, for voltage coefficients ku of 0.3, 0.6, and 0.7, the proposed approach achieved a reduction in the area under the frequency response functions (FRFs) by 15%, 17%, and 22%, respectively. These results highlight the potential of phase-shifted SSDV for high-precision applications, such as the stabilization of machining processes, where the dual-action control of damping and structural resonance is essential for enhancing operational stability and surface finish.

Vibration control; SSDV; Piezoelectric transducer; Piezoelectric damping; Control electronics

2026-07-01

Elsevier

MEASUREMENT

281

květen

121973–

12