Improved resistive shunt by means of negative capacitance: new circuit, performances and multi-mode control

Berardengo, Marta; Thomas, Olivier; Giraud-Audine, Christophe; Manzoni, Stefano

doi:10.1088/0964-1726/25/7/075033

Cited by 78 publications

(172 citation statements)

References 17 publications

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“…In fact, it can be recalled that is a function of 2 (see (12)), and it can thus be modified by changing the geometrical, mechanical, and electrical characteristics of the actuator as well as its position [19]. Furthermore, can be also modified by connecting several piezoelectric actuators in series/parallel [25,26] and by using a negative capacitance [22,27]. Therefore, the model used here is of general validity.…”

Section: Attenuation Performance Of the Optimally Tuned Shuntmentioning

confidence: 99%

“…The linear relationship demonstrated thus far (see (25) and (27)) can lead to the following notations:…”

Section: Attenuation Performance Of the Optimally Tuned Shuntmentioning

confidence: 99%

“…In fact, the lines associated with = 1% lose their linear trend in correspondence of low values of * dB (i.e., for approximately * dB < 4 dB); nevertheless, these curves can still be considered piecewise linear. In fact, if an interval for equal to one order of magnitude is considered (it is hard to change for one order of magnitude [25] or more, even using negative capacitances [27]), the curves can be well approximated as lines.…”

Section: Mistuning On the Electricalmentioning

confidence: 99%

“…These values of 2 and were achieved using a negative capacitance [27], which allowed their initial low values to increase. Furthermore, another value of (i.e., 0.0240) was tested by further boosting the negative capacitance performance.…”

Section: Experimental Testsmentioning

confidence: 99%

See 3 more Smart Citations

The Behaviour of Mistuned Piezoelectric Shunt Systems and Its Estimation

Berardengo

Manzoni

Vanali

2016

Shock and Vibration

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This paper addresses monoharmonic vibration attenuation using piezoelectric transducers shunted with electric impedances consisting of a resistance and an inductance in series. This type of vibration attenuation has several advantages but suffers from problems related to possible mistuning. In fact, when either the mechanical system to be controlled or the shunt electric impedance undergoes a change in their dynamical features, the attenuation performance decreases significantly. This paper describes the influence of biases in the electric impedance parameters on the attenuation provided by the shunt and proposes an approximated model for a rapid prediction of the vibration damping performance in mistuned situations. The analytical and numerical results achieved within the paper are validated using experimental tests on two different test structures.

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Section: Attenuation Performance Of the Optimally Tuned Shuntmentioning

confidence: 99%

“…The linear relationship demonstrated thus far (see (25) and (27)) can lead to the following notations:…”

Section: Attenuation Performance Of the Optimally Tuned Shuntmentioning

confidence: 99%

Section: Mistuning On the Electricalmentioning

confidence: 99%

Section: Experimental Testsmentioning

confidence: 99%

See 2 more Smart Citations

The Behaviour of Mistuned Piezoelectric Shunt Systems and Its Estimation

Berardengo

Manzoni

Vanali

2016

Shock and Vibration

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“…An important part of all calibration methods is the accurate determination of the squared EMCC, which governs both the attainable damping and the shunt tuning. Commonly, the squared EMCC is estimated from a single mode representation of the electromechanical structure (Thomas et al , 2009), while improved accuracy has been demonstrated by including quasi-static effects from higher non-resonant vibration modes (Berardengo et al , 2016). In other cases, the tuning is based directly on the squared effective EMCC determined from either experiments (Porfiri et al , 2007;Delperro et al , 2012) or by numerical analysis (Trindade and Benjeddou , 2009;Benjeddou , 2014).…”

Section: Introductionmentioning

confidence: 99%

Optimal piezoelectric resistive–inductive shunt damping of plates with residual mode correction

Toftekær

Benjeddou

Høgsberg

et al. 2018

Journal of Intelligent Material Systems and Structures

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This work concerns vibration suppression of plates and plate-like structures by resonant piezoelectric damping, introduced by resistive-inductive (RL) shunts. The performance of this type of shunt damping relies on the precise calibration of the shunt frequency, where an important aspect is the ability to account for the energy spill-over from the non-resonant modes, not taken into account by most available calibration methods. A newly proposed calibration procedure includes this residual mode contribution by a quasi-dynamic modal correction, taking both flexibility and inertia effects of the non-resonant modes into account. In the present work, this procedure is implemented in a finite element model combining Kirchhoff plate bending kinematics for the host structure, and a plane-stress assumption for a pair of bonded piezoceramic patches. The established model is verified by comparison with shunt calibrations from benchmark examples in the literature. As demonstrated by frequency response plots and the obtained damping ratios, the RL-shunt tuning is influenced by the effect of the non-resonant modes and omission may yield a significant detuning of the shunt circuit. Finally, an alternative method for precise evaluation of the effective (or generalized) electromechanical coupling coefficient (EMCC) is derived from the modal electromechanical equations of motion. This results in a new shunt tuning method, based on the effective EMCC obtained by the short-and open-circuit frequencies of the coupled piezo-plate structure.

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Enhanced Vibration Damping by Means of a Negative Capacitance

Berardengo

Bonsignori

Cigada

et al. 2016

Structural Health Monitoring, Damage Detection &Amp; Mechatronics, Volume 7

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The use of shunt of piezoelectric transducers to damp mechanical vibrations is an interesting approach thanks to its low cost and the light weight of the actuators used. Among the different ways to build the shunt impedance, the use of negative capacitances is very attractive because it allows for high damping performances with low power required by the control system. Negative capacitances do not exist in the actual world but they can be designed and built using circuits based on operational amplifiers. The use of shunt circuits based on a negative capacitance coupled to a resistance allows to have a broadband control. This paper explains how to increase the bandwidth of the controller by adding to such a shunt circuit an inductance. The dynamics of the controlled system is solved analytically and the reason why the introduction of the inductance is able to give the mentioned improvement is made clear also using numerical simulations. Furthermore, this improvement also allows to increase the attenuation performance. The conditions necessary to assure the stability of the electro-mechanical system are found and explained.

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Improved resistive shunt by means of negative capacitance: new circuit, performances and multi-mode control

Cited by 78 publications

References 17 publications

The Behaviour of Mistuned Piezoelectric Shunt Systems and Its Estimation

The Behaviour of Mistuned Piezoelectric Shunt Systems and Its Estimation

Optimal piezoelectric resistive–inductive shunt damping of plates with residual mode correction

Enhanced Vibration Damping by Means of a Negative Capacitance

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