Piezoelectric vibration damper with piezovoltage-proportional adaptive shunt circuit for efficient resonance suppression and unaffected high-frequency isolation

This study tackles the problem of effectively controlling vibrations in engineering systems while maintaining high-frequency isolation. We design a novel piezoelectric damper which combines a compliant-ortho-planar spring (COPS) structure with a piezovoltage-proportional adaptive synchronized switch damping on voltage (PPA-SSDV) circuit. This integration allows the damper to efficiently suppress vibrations in the resonance region without compromising performance at higher frequencies. The PPA-SSDV circuit features self-sensing peak detection and adaptive control, which minimizes power consumption by selectively engaging the damping function based on vibration intensity. Experimental results demonstrate an average displacement attenuation of −15.4 dB within the 45–58 Hz resonance range, with the damper ceasing operation above 65 Hz to preserve high-frequency isolation. The proposed approach offers a simple, energy-efficient, and effective solution for wideband vibration control.