Design and experimental analysis of self-sensing SSDNC technique for semi-active vibration control

Abstract

A semi-active vibration control technique using nonlinear synchronized switch damping on negative capacitance (SSDNC) is proposed in this article. SSDNC, as one of the effective nonlinear vibration damping techniques, has been intensively investigated and discussed in recent years. In comparison with the classical SSDNC technique, the proposed self-sensing approach realizes the SSDNC technique by using analog circuits, which require neither external sensors nor controllers. In particular, the stability of the switching shunt circuit using negative capacitance (NC) is addressed. The theoretical and experimental analysis reveals that the saturation of the operational amplifier in synthetic NC can prevent the proposed SSDNC circuit from trapping into instability and yielding the best attenuation performance. The final experiments show that the proposed approach exhibits excellent single-mode damping performance and is sufficiently robust.

Design and Experimental Analysis of Charge Recovery for Piezoelectric Fan

“…The PE fan vibrates as its resonant frequency provides maximum amplitude while minimizing power consumption. The spring-mass model of the PE fan was developed to optimize the frequency response [36], and the mechanical equation of the PE fan is expressed as…”

Modal analysis and demonstration of metastructure combining local resonators and an autonomous synchronized switch damping circuit

“…Subsequently, Lallart et al 6 proposed a novel technique which allows to realize a self-sensing and self-powered system. Adopting the self-sensing and/or self-powered technique, derivative techniques such as a self-sensing (SS) synchronized switch damping on voltage (SS-SSDV) technique, 7 a SS-synchronized switch damping on negative capacitance (SS-SSDNC) technique, 8 and a SS-technique using a microcontroller unit with low power consumption 9,10 were developed. These techniques can also be applied to reduce the level of sound induced by a structure’s vibration that is excited by a sound source.…”

“…12 The circuit in this study mainly comprises npn (T r1 and T r3 , Nexperia, PBHV8140Z) and pnp (T r2 and T r4 , Nexperia, PBHV9540Z) transistors, diodes (Diodes Incorporated, MUR120-T), a base resistor R b (3.3 kΩ), an envelope capacitor C ed (1 nF), and an inductor L 0 . Compared with other SSD-based circuits, 6−8 the circuit can increase the magnitude of the piezo voltage and thus the attenuation performance of the SSDI by decreasing C ed required. The advantage is greater for a device having series-connected piezo elements in which the envelope capacitance is not negligible compared with the piezo capacitance, because the circuit can reduce the electric current consumed in the envelope capacitor.…”

Bandgap coupling effects between hybrid nonlinear synchronized switch damping and linear two-order resonant bandgaps in piezoelectric meta-structures

“…To improve elastic wave attenuation performance, many studies have been conducted with various shunting strategies (active/semi-active/semipassive shunts). [12][13][14][15][16][17][18][19][20][21][22] Zhou et al 20 proposed a tunable beam-type metamaterial composed of elastic base beams and periodically arrayed active beam-type resonators. Beck et al 23 studied a piezoelectric cantilever beam metamaterial with a negative capacitance piezoelectric periodic array.…”