A new design of unsymmetrical shunt circuit with negative capacitance for enhanced vibration control

Ji, Hongli; Guo, Yufei; Qiu, Jinhao; Wu, Yipeng; Zhang, Chao; Tao, Chongcong

doi:10.1016/j.ymssp.2020.107576

Cited by 16 publications

(4 citation statements)

References 22 publications

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“…Besides linear strategies, diverse nonlinear elements have been integrated into the PE shunt absorber. The synchronized switch damping method, in which various impedance circuits are periodically activated, has been intensively studied since its proposal [14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

A nonlinear piezoelectric shunt absorber with tunable piecewise linear negative capacitance

Zhang,

Li,

Sun

et al. 2024

Smart Mater. Struct.

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In recent years, extensive research has been devoted to nonlinear piezoelectric shunt circuits for mitigating structural vibrations. However, existing studies have primarily concentrated on polynomial nonlinearity, particularly cubic nonlinearity. This paper develops a tunable non-smooth piezoelectric shunt absorber to suppress structural vibrations under harmonic excitation. We enhance the conventional resonant circuit by introducing a piecewise linear negative capacitor, which is implemented using a pair of diodes and voltage sources. The stationary response of the non-smooth system is derived using the complexification-averaging method. The effects of critical voltage and excitation intensity on the damping performance are investigated subsequently. Furthermore, we apply an adaptive control method based on the gradient descent algorithm with adaptive moment estimation (Adam) to the nonlinear circuit, improving its damping performance and enabling adaptation to changes in excitation intensity. Experimental results validate the effectiveness of the proposed adaptive nonlinear circuit, demonstrating superior stationary performance compared to linear resonant shunt circuits across a broad bandwidth of frequencies, especially at off-resonant frequencies.

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Section: Introductionmentioning

confidence: 99%

A nonlinear piezoelectric shunt absorber with tunable piecewise linear negative capacitance

Zhang,

Li,

Sun

et al. 2024

Smart Mater. Struct.

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“…Ji et al presented the SSD on negative capacitance circuit (SSDNC), in which the voltage is inverted and amplified by a negative capacitor [14]. They also developed the unsymmetrical SSDV and SSDNC according to the unsymmetrical maximum applicable bipolar voltage of piezoelectric materials [15,16]. Xu et al introduced a negative capacitor into the SSDI control to improve the electromechanical coupling coefficient, which is called SSD on negative capacitor and inductor (SSDNCI) [17].…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, the voltage decay caused by leakage current becomes dominant in the case of low displacement amplitude and vibration frequency. This phenomenon is particularly severe for high-performance SSDV and SSDNC [15][16][17]. Conventional electronic breakers cannot work if the voltage decay is dominant.…”

Section: Introductionmentioning

confidence: 99%

Self-sensing synchronized switch damping based on zero-crossing detection with voltage decay compensation

Zhang

Deng

et al. 2023

Smart Mater. Struct.

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Synchronized switch damping (SSD) techniques have been developed for structural vibration suppression in recent years. In SSD control, a self-sensing approach can invert the voltage on piezoelectric materials without sensors or real-time controllers. However, this approach has been challenged since the voltage generated by the vibration of controlled mode becomes minor compared with noises as the increase of damping performance. Furthermore, the voltage decay caused by the current leakage is dominant when the host structure vibrates at a low frequency. This paper proposes a self-sensing approach based on the zero-crossing detection (ZCD) technique with voltage decay compensation. The switching delay, voltage decay, and higher-order harmonic vibration are considered in the electromechanical model of the SSD system. Accordingly, a band-limited proportional-differential (PD) circuit is implemented to offset the voltage decay and generate zero-crossings at displacement extrema simultaneously. Experiments show that the proposed method is still effective when the voltage decay in the SSD control is dominant.

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“…Ji et al [49] developed new SSD control method-an unsymmetrical SSD. They also invented and examined a method of realizing unsymmetrical bipolar voltage with an SSD method based on negative capacitance shunt circuit, for improvement of the vibration control performance [50]. Zhang et al [51] proposed an enhanced SSDI (synchronized switch damping on inductor) approach to suppress the vibration of bladed disks in aero-engines.…”

Section: Introductionmentioning

confidence: 99%

Vibroacoustical Performance Analysis of a Rigid Device Casing with Piezoelectric Shunt Damping

Mazur

Rzepecki

Pietruszewska

et al. 2021

Sensors

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Noise and vibration are common issues that may have a negative impact on human’s’ health. To minimize their consequences, several vibroacoustical methods may be employed. One well-known method is Piezoelectric Shunt Damping (PSD). Over the years, many approaches have been investigated, from passive, state switching circuits to active pulse-switching. In this paper, the authors propose three PSD implementations—passive Synchronized Switch Damping on Inductor (SSDI), semi-active SSDI and active Synchronized Switch Damping on Voltage source (SSDV)—for a single-panel structure mounted on a rigid-frame casing. The nine Macro Fiber Composite (MFC) elements were mounted on the plate based on preliminary simulations in FreeFEM. Then, the theoretical results were validated by an identification experiment. The main research is concentrated on the Sound Pressure Level (SPL) and structural vibrations reduction for selected frequencies. The active method provided the highest reduction of vibration—up to 5.5 dB for maximal possible loudspeaker level without overdrive and up to 7.5 dB for lower excitation levels.

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A new design of unsymmetrical shunt circuit with negative capacitance for enhanced vibration control

Cited by 16 publications

References 22 publications

A nonlinear piezoelectric shunt absorber with tunable piecewise linear negative capacitance

A nonlinear piezoelectric shunt absorber with tunable piecewise linear negative capacitance

Self-sensing synchronized switch damping based on zero-crossing detection with voltage decay compensation

Vibroacoustical Performance Analysis of a Rigid Device Casing with Piezoelectric Shunt Damping

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