Bending nearfield compensation in the context of vibroacoustic active control

Michau, Marc; Berry, Alain; Herzog, Philippe; Micheau, Philippe

doi:10.1051/meca/2014078

Cited by 4 publications

(6 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The first term in equation (17) is the sensor current due to the bending response of the plate. The low-order terms in the modal summation represent a global vibration response of the plate, while the high-order terms represent the local, near field response in the vicinity of the PZT (Michau et al, 2013). In the context of active control of the global vibration response of the plate or sound radiation from the plate, it is not desirable to control these local components.…”

Section: Ssa Modelmentioning

confidence: 99%

See 1 more Smart Citation

Harmonic active vibration control using piezoelectric self-sensing actuation with complete digital compensation

Pelletier

Micheau

Berry

2017

Journal of Intelligent Material Systems and Structures

View full text Add to dashboard Cite

In this article, the implementation of a self-sensing piezoelectric actuator with complete digital compensation is presented. The proposed compensation not only minimizes the signal due to the electrical behavior of the self-sensing actuator but also takes into account the fact that piezoelectric actuator causes a local strain—not related to the global vibration of the plate—in a vibrating plate to which it is coupled. Therefore, the corrected measured current is related to the global vibration of the plate and may be used in an active control scheme. The electro-mechanical model on which is based this self-sensing actuator is first explained. Then, the electronic and digital processing implementation is presented, as well as the active time-harmonic control scheme used. Finally, results of experimental validation are presented, and the attenuation performance of the self-sensing actuator is compared to the performances of a co-localized accelerometer/lead zirconate titanate pair. It is shown that the corrected self-sensing actuator current gives results better than what is obtained with a co-localized sensor/actuator pair and that this technique may be used to control more than one frequency simultaneously.

show abstract

Section: Ssa Modelmentioning

confidence: 99%

“…In addition to the bridge balancing issues, piezoelectric actuators are known to induce local strain in the structure to which they are coupled (Ji et al, 2011; Michau et al, 2013). This strain is measured by the PZT even if it is not related to the vibration of the plate.…”

Section: Introductionmentioning

confidence: 99%

Harmonic active vibration control using piezoelectric self-sensing actuation with complete digital compensation

Pelletier

Micheau

Berry

2017

Journal of Intelligent Material Systems and Structures

View full text Add to dashboard Cite

show abstract

“…However, the output current is partly due to the capacitive effect of the piezoelectric material and to the mechanical deformation of the structure. Unlike an inertial exciter, the PZT actuator creates strong local bending when actuated, which does not contribute to the global vibration of the plate [19]. When intended to be used as a self-sensing actuator, the output current of the PZT actuator needs to be corrected so as to minimize the contribution of the effects mentioned above.…”

Section: Coupled Piezoelectric Actuator-plate Modelmentioning

confidence: 99%

“…As presented in [19], the contribution to the mechanical current i m of the higher frequency modes (ω mn 2 ω 2 ) may be expressed as a stiffness K n f and involves a local vibration response of the plate around the PZT transducer. Conversely, denoting the contribution i b of the total current which is due to lower order modes and thus contains the global vibration of the plate, Eq.…”

Section: Coupled Piezoelectric Actuator-plate Modelmentioning

confidence: 99%

Active Vibration Control Using Self-Sensing Actuators: An Experimental Comparison of Piezoelectric and Electromagnetic Technologies

Boulandet

Pelletier

Micheau

et al. 2014

Volume 13: Vibration, Acoustics and Wave Propagation

View full text Add to dashboard Cite

The paper addresses the practical implementation of active vibration control using self-sensing actuators, intending to equip smart structures. The control objective is to reduce the structural vibration of a simply-supported plate subject to time-harmonic excitation. The key challenge is to use a self-sensing actuator instead of a sensor-actuator pair to reject the primary disturbance at the control point. In this study, two types of self-sensing actuators designed from a PZT patch and an electrodynamic inertial exciter are discussed, and their overall performance is compared in terms of reduction of flexural energy and power consumption. Both technologies have proven to be efficient in achieving a timeharmonic vibration control and may be used alternately, depending on the application at hand.

show abstract

“…To overcome the local strain problem, Ji and Wu investigated the influence of local strain by a numerical and experimental method and separated the local strain signal by using neural network identification [ 36 ]. Michau observed the bending nearfield problem in active acoustic control by self-sensing actuation and proposed a method to compensate for the transfer function of the modified model [ 37 ]. Pelletier proposed a digital compensation method for the signal induced by local strain based on the PZT and cantilever beam parameters [ 38 ].…”

Section: Introductionmentioning

confidence: 99%

Adaptive Feedforward Compensating Self-Sensing Method for Active Flutter Suppression

Wang

2018

Sensors

View full text Add to dashboard Cite

A single piezoelectric patch can be used as both a sensor and an actuator by means of the self-sensing piezoelectric actuator, and the function of self-sensing shows several advantages in many application fields. However, some problems exist in practical application. First, a capacitance bridge circuit is set up to realize the function of self-sensing, but the precise matching of the capacitance of the bridge circuit is hard to obtain due to the standardization of electric components and variations of environmental conditions. Second, a local strain is induced by the self-sensing actuator that is not related to the global vibration of the structure, which would affect the performance of applications, especially in active vibration control. The above problems can be tackled by the feedforward compensation method that is proposed in this paper. A configured piezoelectric self-sensing circuit is improved by a feedforward compensation tunnel, and a gain of compensation voltage is adjusted by the time domain and frequency domain’s steepest descent algorithms to alleviate the capacitance mismatching and local strain problems. The effectiveness of the method is verified in the experiment of the active vibration control in a wind tunnel, and the control performance of compensated self-sensing actuation is compared to the performance with capacitance mismatching and local strain. It is found that the above problems have negative effects on the stability and performance of the vibration control and can be significantly eliminated by the proposed method.

show abstract

Bending nearfield compensation in the context of vibroacoustic active control

Cited by 4 publications

References 4 publications

Harmonic active vibration control using piezoelectric self-sensing actuation with complete digital compensation

Harmonic active vibration control using piezoelectric self-sensing actuation with complete digital compensation

Active Vibration Control Using Self-Sensing Actuators: An Experimental Comparison of Piezoelectric and Electromagnetic Technologies

Adaptive Feedforward Compensating Self-Sensing Method for Active Flutter Suppression

Contact Info

Product

Resources

About