Simultaneous sensing and actuation using piezoelectric materials

Hagood, Nesbitt W.; Anderson, Eric H.

doi:10.1117/12.51196

Cited by 39 publications

(31 citation statements)

References 9 publications

(21 reference statements)

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“…The weighted-norm representation refers to a linear mapping from the structural state vector z E R' to some acoustic output vector Z E R , so that the control cost functional becomes J = ':' ZT(i)Z(t) + UT(t)Ru(i)dt. (1) Different images of a under varying matrix transformations Z = G z can be developed. Numerous researchers have reported on the effects of weightednorm ASAC controllers.…”

Section: Introductionmentioning

confidence: 99%

<title>Impact of piezoelectric sensoriactuators on active structural acoustic control</title>

1993

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The development of simultaneous sensing and actuation for a single piezoelectric element, called a sensoriactuator in this paper, provides the opportunity for truly collocated control in adaptive structures. Issues related to collocation are discussed in terms of their effects on active structural acoustic control (ASAC). A variation on earlier feedback ASAC methods, direct radiation feedback (DRFB), is suggested for the sensoriactuator adaptive structure. The DRFB method relies on a discrete-point formulation of the associated radiated energy norm. The influence of the acoustic dynamics on proven sufficient conditions for globally stable collocated velocity feedback is discussed for the first time. Selection of an appropriate Lyapunov function for the stability analysis of collocated DRFI3 is discussed and compared to previous results for direct velocity feedback in active vibration control.

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Section: Introductionmentioning

confidence: 99%

<title>Impact of piezoelectric sensoriactuators on active structural acoustic control</title>

1993

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“…In this case, the feedback from the unbalanced bridge voltage is utilized to increase damping around the resonance frequencies. The second approach has been implemented in collocated and concomitant position and velocity feedback in PZ actuators, see (14) and (8).…”

Section: (12)mentioning

confidence: 99%

“…In normal, passive materials the mechanical stiffness, K, is defined as the ratio of applied force to deformation: [8] In the case of PZ actuators, because of the active nature of the material, there is the possibility of programmable stiffness. The force-deformation ratio for piezoelectric actuators is highly dependent on the electrical boundary conditions applied to the actuator electrodes.…”

Section: Programmable Stiffness In Pz Materialsmentioning

confidence: 99%

“…The fundamental feature in this approach is the concomitant sensing and actuation. In this context, simultaneous sensing and actuation using piezoelectric materials has been extensively studied, (8). In this instance, the intrinsic requirements for setting up the magnetic and the electrical field in MS and PZ actuators respectively lead to significant differences in the type of smart structures they can be integrated in.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Un estudio comparativo de actuadores Piezoeléctricos y Magnetoestrictivos para estructuras inteligentes

Pons¹

2005

Bol. Soc. Esp. Ceram. Vidr.

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This paper introduces a comparative analysis of Piezoelectric (PZ) and Magnetostrictive (MS) actuators as components in smart structures. There is an increasing interest in functional structures which are able to adapt to external or internal perturbations, i.e. changes in loading conditions or ageing. Actuator technologies must perform concomitantly as sensors and actuators to be applicable in smart structures. In this paper we will comparatively analyze the possibility of using PZ and MS actuators in smart structures and in so doing their capability to act concomitantly as sensors and of modifying their material characteristics. We will also focus on the analysis of how them can be integrated in structures and on the analysis of the most appropriate structures for each actuator. The operational performance of PZ (Stacks) and MS actuators will be compared and eventually some conclusions will be drawn. Keywords: Piezoelectric actuators, Magnetostrictive actuators, smart structures. Un estudio comparativo de actuadores Piezoeléctricos y Magnetoestrictivos para estructuras inteligentesEste artículo presenta un estudio comparativo de actuadores Piezoeléctricos (PZ) y Magnetoestrictivos (MS) como elementos integrantes de estructuras inteligentes. Existe un interés creciente en estructuras activas que puedan adaptarse a perturbaciones tanto internas como externas, por ejemplo, ante cambios en carga estructural o ante su envejecimiento. Para que un actuador forme parte de una estructura inteligente, debe poder actuar también como sensor. Este artículo presenta un estudio comparativo del uso de actuadores PZ y MS en estructuras inteligentes y, como consecuencia, de su habilidad para actuar y medir simultáneamente así cómo para modificar sus características mecánicas. Nos centraremos también en el análisis de como pueden integrase en estructuras y cuales son las más indicadas para cada actuador. Se compararán las características operacionales de los actuadors PZ multicapa y los MS.

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“…The idea of self-sensing actuation was developed concurrently by Hagood et al [11] and Dosch et al [12] in the early nineties, where the PZT elements were used as sensors and actuators simultaneously to reduce implementation, cost and complexity, by achieving truly collocated control. The principle was later implemented to achieve vibration control on a cantilever beam [9], active structural acoustic control on a simply supported plate [13], vibration damping [14], to develop a sensorless technique for active noise control using an electrodynamic loudspeaker [15], or for biomedical application using an electro-magnetic actuator [16].…”

Section: Introductionmentioning

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

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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.

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Simultaneous sensing and actuation using piezoelectric materials

Cited by 39 publications

References 9 publications

<title>Impact of piezoelectric sensoriactuators on active structural acoustic control</title>

<title>Impact of piezoelectric sensoriactuators on active structural acoustic control</title>

Un estudio comparativo de actuadores Piezoeléctricos y Magnetoestrictivos para estructuras inteligentes

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

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