Active vibration control: considering effect of electric field on coefficients of PZT patches

Sharma, Sukesha; Vig, Renu; Kumar, Navin

doi:10.12989/sss.2015.16.6.1091

Cited by 8 publications

(4 citation statements)

References 25 publications

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“…It should be noted that these modes in the experiment are slightly different from those in the simulations due to the influence of polarization conditions, stress/strain rates, temperatures, the additional stiffness of the exciter, etc. [30].…”

Section: Experiments Setupmentioning

confidence: 99%

Investigation of Controllable Modes in Active Vibration Cancellation Induced by Piezoelectric Patches

Han

Sheng

2021

Applied Sciences

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Piezoelectric (PZT) patches are widely preferred for actuators and sensors for achieving active vibration cancellation (AVC). When PZT actuators and sensors are placed at the region of maximum strain energy for structural modes, there are still uncontrollable and controllable modes in the actual application. When an uncontrollable mode is excited, the structural vibration problem may not be solved by AVC, and may even be aggravated. However, a few studies have specifically targeted this problem. In this study, the controllable modes of a plate with free boundaries are investigated to ensure the AVC effect. To specify the controllable modes in advance, a criterion for controllable modes is proposed. The proposed criterion is firstly obtained by defining the ratio of the open-loop and closed-loop energies of AVC, and then simplified by considering the dominating modes. Corresponding simulations and experiments are conducted on a smart plate consisting of PZT patches to verify the correctness of the theoretical analysis. Results show that the proposed criterion is reliable to specify the controllable modes. The vibration response of the plate is significantly attenuated at the selected controllable mode, and conversely enlarged at a specified uncontrollable mode. It is verified that controllable modes can be effectively predicted by the proposed criterion, which promotes the application of AVC.

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Section: Experiments Setupmentioning

confidence: 99%

Investigation of Controllable Modes in Active Vibration Cancellation Induced by Piezoelectric Patches

Han

Sheng

2021

Applied Sciences

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“…Finally, closed-loop control is done using negative velocity feedback method (Gupta et al, 2012;Sharma et al, 2015b). External voltage applied on the piezoelectric actuator is calculated as…”

Section: Mathematical Modellingmentioning

confidence: 99%

“…In this work, entire state vector is estimated using Kalman observer. Estimated state vector fs e g is given by (Gopal, 2010;Sharma et al, 2015b) s e f g 6 3 1 = dA ½ 6 3 6 s e f g 6 3 1 + dB ½ 6 3 1 V control + L kal f g 6 3 1 V sensor À C sensor f g 1 3 6 s e f g 6 3 1 À Á ð19Þ s e f g 6 3 1 = s e f g 6 3 1 + M kal f g 6 3 1…”

Section: Mathematical Modellingmentioning

confidence: 99%

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Temperature compensation in a smart structure by application of DC bias on piezoelectric patches

Sharma

Vig

Kumar

2016

Journal of Intelligent Material Systems and Structures

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A novel technique is presented to maintain closed-loop performance of a smart piezo structure at an elevated temperature. Square cantilevered plate instrumented with a piezoelectric sensor and a piezoelectric actuator is taken as a test structure. Finite element model of the smart plate is developed using Hamilton's principle. Finite element model is reduced to first three modes using modal truncation and subsequently a model in state space is derived. First three modal displacements and velocities are observed by a Kalman observer. Negative first modal velocity feedback is employed to control structural vibrations. Performance of the smart structure in open loop as well as in closed-loop changes appreciably at elevated temperature because piezoelectric strain coefficient as well as permittivity increases with increase in temperature. This change in performance is successfully suppressed by application of suitable DC bias on piezoelectric patches. DC bias applied on sensor is blocked from entering signal conditioner by a DC blocker circuit. DC blocker circuit is simulated in LTspice Ò software to verify its performance.

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Mathematical Model of Cantilever Plate Using Finite Element Technique Based on Hamilton’s Principle

Sarabi

Sharma

Kaur

2018

Lecture Notes in Electrical Engineering

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Active vibration control: considering effect of electric field on coefficients of PZT patches

Cited by 8 publications

References 25 publications

Investigation of Controllable Modes in Active Vibration Cancellation Induced by Piezoelectric Patches

Investigation of Controllable Modes in Active Vibration Cancellation Induced by Piezoelectric Patches

Temperature compensation in a smart structure by application of DC bias on piezoelectric patches

Mathematical Model of Cantilever Plate Using Finite Element Technique Based on Hamilton’s Principle

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