Improved piezoelectric switch shunt damping technique using negative capacitance

Han, Xu; Neubauer, Marcus; Wallaschek, Jörg

doi:10.1016/j.jsv.2012.08.001

Cited by 35 publications

(26 citation statements)

References 10 publications

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“…Christopher et al [121] proposed a self-tuning approach that implemented the more general optimal switch timing for synchronized switch damping on an inductor without needing any knowledge of the system parameters. In order to improve the damping performance, Han et al [122] connected SSDI circuit in parallel to a negative capacitance. stiffness.…”

Section: Nonlinear Shuntmentioning

confidence: 99%

Shunt Damping Vibration Control Technology: A Review

Yan

Wang

et al. 2017

Applied Sciences

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Smart materials and structures have attracted a significant amount of attention for their vibration control potential in engineering applications. Compared to the traditional active technique, shunt damping utilizes an external circuit across the terminals of smart structure based transducers to realize vibration control. Transducers can simultaneously serve as an actuator and a sensor. Such unique advantage offers a great potential for designing sensorless devices to be used in structural vibration control and reduction engineering. The present literature combines piezoelectric shunt damping (PSD) and electromagnetic shunt damping (EMSD), establishes a unified governing equation of PSD and EMSD, and reports the unique vibration control performance of these shunts. The schematic of shunt circuits is given and demonstrated, and some common control principles and equations of these shunts are summarized. Finally, challenges and perspective of the shunt damping technology are discussed, and suggestions made based on the knowledge and experience of the authors.

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Section: Nonlinear Shuntmentioning

confidence: 99%

Shunt Damping Vibration Control Technology: A Review

Yan

Wang

et al. 2017

Applied Sciences

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“…(27) under the assumption that it remains purely sinusoidal, where ω is the angular frequency of the driving force. The voltage on the piezoelectric patch can be expressed as the sum of two functions; one is the image of displacement or strain variation V st , while the other is a rectangular signal due to switching action V sw , as shown in Fig.…”

Section: Damping Performance Of Ssdncimentioning

confidence: 99%

“…This means that the negative capacitance remains connected to the piezoelectric patch in both the switching states i.e. open and close circuit configuration [27]. As the voltage inversion ratio γ directly influences the amount of piezoelectric patch voltage, therefore the resistance in the shunt circuit should be as small as possible [22].…”

Section: Introductionmentioning

confidence: 99%

An autonomous synchronized switch damping on inductance and negative capacitance for piezoelectric broadband vibration suppression

Qureshi¹,

Shen²,

Chang³

2016

International Journal of Aeronautical and Space Sciences

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Synchronized switch damping (SSD) is a structural vibration control technique in which a piezoelectric patch attached to or embedded into the structure is connected to or disconnected from the shunt circuit in order to dissipate the vibration energy of the host structure. The switching process is performed by a digital signal processor (DSP) which detects the displacement extrema and generates a command to operate the switch in synchronous with the structure motion. Recently, autonomous SSD techniques have emerged in which the work of DSP is taken up by a low pass filter, thus making the whole system autonomous or self-powered. The control performance of the previous autonomous SSD techniques heavily relied on the electrical quality factor of the shunt circuit which limited their damping performance. Thus in order to reduce the influence of the electrical quality factor on the damping performance, a new autonomous SSD technique is proposed in this paper in which a negative capacitor is used along with the inductor in the shunt circuit. Only a negative capacitor could also be used instead of inductor but it caused saturation of negative capacitor in the absence of an inductor due to high current generated during the switching process. The presence of inductor in the shunt circuit of negative capacitor limits the amount of current supplied by the negative capacitance, thus improving the damping performance. In order to judge the control performance of proposed autonomous SSDNCI, a comparison is made between the autonomous SSDI, autonomous SSDNC and autonomous SSDNCI techniques for the control of an aluminum cantilever beam subjected to both single mode and multimode excitation. A value of negative capacitance slightly greater than the piezoelectric patch capacitance gave the optimum damping results. Experiment results confirmed the effectiveness of the proposed autonomous SSDNCI technique as compared to the previous techniques. Some limitations and drawbacks of the proposed technique are also discussed.

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“…As it is difficult to fabricate an inductor with a high quality factor, the the piezoelectric patch in SSDI is limited. However, in SSDNC this voltage can increased by choosing an appropriate value of negative capacitance [30]. The theoretic the SSDNC damping is given by Eq.…”

Section: Ssd On Negative Capacitance (Ssdnc)mentioning

confidence: 99%

“…This improved the damping performance relative to SSDNC. A more recent version of this technique was proposed by Han et al [30]. This paper proposes a new technique called 'synchronized switch damping on negative capacitance and adaptive voltage sources' (SSDNCAV).…”

Section: Introductionmentioning

confidence: 99%

Piezoelectric shunt damping by synchronized switching on negative capacitance and adaptive voltage sources

Qureshi¹,

Shen²,

Chen³

2014

International Journal of Aeronautical and Space Sciences

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Synchronized switch damping (SSD) techniques have recently been developed for structural vibration control using piezoelectric materials. In these techniques, piezoelectric materials are bonded on the vibrating structure and shunted by a network of electrical elements. These piezoelectric materials are switched according to the amplitude of the excitation force to damp vibration. This paper presents a new SSD technique called 'synchronized switch damping on negative capacitance and adaptive voltage sources' (SSDNCAV). The technique combines the phenomenon of capacitance transient charging and electrical resonance to effectively dampen the structural vibration. Also, the problem of stability observed in the previous SSD techniques is effectively addressed by adapting the voltage on the piezoelectric patch according to the vibration amplitude of the structure. Analytical expressions of vibration attenuation at the resonance frequency are derived, and the effectiveness of this new technique is demonstrated, for the control of a resonant cantilever beam with bonded piezoelectric patches, by comparing with SSDI, SSDVenh, and SSDNC techniques. Theoretical predictions and experimental results show the remarkable vibration damping capability of SSDNCAV technique, which was better than the previous SSD techniques. The broadband vibration control capabilities of SSDNCAV technique are also demonstrated, which exceed those of previous SSD techniques.

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Improved piezoelectric switch shunt damping technique using negative capacitance

Cited by 35 publications

References 10 publications

Shunt Damping Vibration Control Technology: A Review

Shunt Damping Vibration Control Technology: A Review

An autonomous synchronized switch damping on inductance and negative capacitance for piezoelectric broadband vibration suppression

Piezoelectric shunt damping by synchronized switching on negative capacitance and adaptive voltage sources

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