Piezoelectric Array Sensing of Volume Displacement: A Hardware Demonstration

François, A.; Man, P. De; Preumont, André

doi:10.1006/jsvi.2000.3483

Cited by 22 publications

(12 citation statements)

References 9 publications

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“…sound radiation estimated either by microphone acoustic sensors placed in the interior volume or by piezoelectric distributed transducer or accelerometer structural sensors fixed on the panel itself [6,21,38,[58][59][60][61][62][63][64][65][66][67][68][69][70]. Since the first inception of this idea, quite a vast range of designs have been investigated by scientists, which encompass either distributed strain sensors or arrays of point sensors [71][72][73][74][75][76][77][78][79][80][81] specifically designed to detect the vibration components of a panel that mostly contribute to the far field sound radiation. Also, a considerable amount of efforts has been dedicated to the development of strain actuators in such a way as to have compact and lightweight composite smart structures [73,74,[82][83][84][85][86][87][88][89][90].…”

Section: Smart Panels For Vibration and Sound Transmission Active Conmentioning

confidence: 99%

Comparison of smart panels for tonal and broadband vibration and sound transmission active control

Gardonio

Turco

2020

International Journal of Smart and Nano Materials

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Section: Smart Panels For Vibration and Sound Transmission Active Conmentioning

confidence: 99%

Comparison of smart panels for tonal and broadband vibration and sound transmission active control

Gardonio

Turco

2020

International Journal of Smart and Nano Materials

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“…16 However, several problems have been encountered in the development of truly collocated and dual 8,9 distributed sensor-actuator pairs which would guarantee unconditionally stable feedback control loops. 7,[17][18][19][20][21][22][23][24] In contrast the modern approach uses much simpler arrays of sensors and actuators but rather complicated control systems with a state observer that inherently limits the control effectiveness as well as the robustness of the controller. 3,20,24 -37 In summary the development of SISO classic feedback control systems is held back by the difficulties encountered to develop collocated and dual distributed sensor-actuator pairs whose response functions have real part positive definite so that unconditionally stable direct feedback loops could be implemented.…”

Section: Introductionmentioning

confidence: 96%

Smart panels with velocity feedback control systems using triangularly shaped strain actuators

Gardonio

Elliott²

2005

The Journal of the Acoustical Society of America

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In this paper we present a theoretical study on the active structural acoustic control of a new smart panel with sixteen triangularly shaped piezoelectric patch actuators, having their base edges evenly distributed along the perimeter of the panel, and velocity sensors positioned at the vertices opposite the base edges. The performance is assessed and contrasted with that of a conventional smart panel using a 4 x 4 array of square piezoelectric patch actuators evenly distributed over the surface of the panel with velocity sensors at their centers. For both systems the control effectiveness and stability of MIMO decentralized or SISO direct velocity feedback control architectures have been analyzed. The two control systems are arranged to generate active damping which reduces the response and sound radiation of the panel in the lightly damped and well separated low-frequency resonances. In particular the new control system can be seen as a set of sixteen "active wedges" which absorb energy from the incident flexural waves to the borders of the panel so that the panel could be considered anechoic. This study shows that the new arrangement with triangularly shaped actuators can achieve better control than the corresponding system using square actuators.

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“…Reduction in the volume velocity of the panel leads to a reduction in sound power. Sensor networks (Francois et al, 2001; Sors and Elliott, 2002) or a distributed sensor such as polyvinylidenefluoride (PVDF) film (Preumont et al, 2005) has been implemented to evaluate volume velocity and supply a single-input, single-output (SISO) controller. System stability is guaranteed (Preumont, 2002) when the actuators and the sensors are ideal, collocated, and dual.…”

Section: Introductionmentioning

confidence: 99%

Improvement of transmission loss of a double panel by using active control with a virtual modal mass

Lhuillier

Chesné

Gaudiller

et al. 2013

Journal of Intelligent Material Systems and Structures

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International audienceIn this article, modal feedback control is proposed to reduce the sound transmission through finite double panels using lead zirconate titanate ceramic sensors and actuators bonded to the structure. Active control allows adding virtual modal damping and mass to the structure by the use of modal velocities and accelerations. In a first step, the equations describing the structure, the actuators, the acoustic excitation, and the acoustic radiation are detailed. Next, the state space formulation of the smart structure is presented. In a second step, the implementation of active control is illustrated through the use of numerical examples. Finally, simulations are performed using two actuators, allowing five modes to be controlled. The transmission loss factors of the controlled and uncontrolled structure are shown as a function of the required command voltage. These results are also compared with those achieved using other vibroacoustic control techniques

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Piezoelectric Array Sensing of Volume Displacement: A Hardware Demonstration

Cited by 22 publications

References 9 publications

Comparison of smart panels for tonal and broadband vibration and sound transmission active control

Comparison of smart panels for tonal and broadband vibration and sound transmission active control

Smart panels with velocity feedback control systems using triangularly shaped strain actuators

Improvement of transmission loss of a double panel by using active control with a virtual modal mass

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