Piezoelectric strain rate sensor and actuator designs for active vibration control

Lee, C.-K.; O’Sullivan, T. C.; Chiang, W.-W.

doi:10.2514/6.1991-1064

Cited by 26 publications

(11 citation statements)

References 7 publications

(4 reference statements)

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“…(5), the coupling terms are the piezoelectric constants which relate stress to applied field, the e coefficients. The e constants and clamped dielectric matrix cS expressed in terms of the more commonly available d constants and free dielectric matrix T as e=dc' and CSCT_dcEd (6) For piezoelectric ceramics, the matrix of piezoelectric d coefficients has the form 0 0 0 0 d15 0 d= 0 0 0 d15 0 0 d31d31d33 0 0 0 (7) SPIE Vol. 1543 Active andAdaptive Optical Components (1991)!…”

Section: General Model Of Electroelasticitymentioning

confidence: 99%

“…Piezoelectric elements have been widely used as actuators in adaptive structures from beams and plates, to trusses and more complicated structures [1][2][3][4][5][6]. Piezoelectric materials have also been used as structural strain and strain rate sensors [7] and as distributed sensors for both modal [8] and wave [9] control. In addition to active control applications, piezoelectric materials have also been used in passive structural damping applications [10].…”

Section: Introductionmentioning

confidence: 99%

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Simultaneous sensing and actuation using piezoelectric materials

Hagood

Anderson

1992

SPIE Proceedings

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The possibility of using a single piezoelectric element simultaneously as both a structural actuator and collocated sensor is investigated. The coupled actuator and sensor equations for an arbitrary elastic structure with piezoelectric elements are developed using an assumed modes energy method. Examination of these equations suggests a simple implementation of collocated strain or strain rate sensing using a voltage driven piezoelectric element. The properties of such a collocated strain or strain rate sensor are presented. The general equations are applied to the case of a cantilevered beam with surface mounted piezoceramics. The theoretical derivations are validated experimentally on an actively controlled cantilevered beam test article with a single piezoelectric element used for collocated strain rate feedback.

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Section: General Model Of Electroelasticitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Simultaneous sensing and actuation using piezoelectric materials

Hagood

Anderson

1992

SPIE Proceedings

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“…For applications in which frequencies are above 5 Hz, piezoelectric actuators are the most widely encountered. Unfortunately, the stroke of the monolithic material is limited to microns and is only useful for small stroke applications such as vibration and noise control [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] . Significant research has been conducted to amplify the stroke with two primary schemes: internally leveraged based upon the d 31 mode and externally leveraged based upon the d 33 mode of the piezoelectric material.…”

Section: Introductionmentioning

confidence: 99%

Actuation development and evaluation for INSTAR: inertially stabilized rifle

et al. 2003

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In the use of piezoelectric actuators, it is a clear choice to use stack (or d 33 mode) architectures when very high force is required or bender (or d 31 mode) architectures when very high displacements are needed. However, the choice isn't as clear for applications that need simultaneously moderate to high force and displacement. This paper presents one such application, INSTAR, which is posed with this dilemma. INSTAR is a novel rifle system that has an inertially stabilized barrel via an active suspension based on piezoelectric actuation. While the frequency required for this application was low (~10Hz), the displacement (± 200 to 400 microns) and the force (22-45 N) are moderate. Two very different actuation approaches were developed, modeled, fabricated and experimentally validated within the INSTAR demonstration platform: 1) a d 31 approach based on the Recurve architecture with focus on generating higher forces than is common for d 31 actuators and 2) a d 33 approach based upon a compliant mechanism designed using topology optimization with focus on providing more amplified strain than is common for d 33 actuators. Both approaches were successful in meeting the INSTAR requirements, but each had its own advantages and disadvantages.

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“…Distributed piezoelectric actuators are used exclusively in the sensor studies. These actuators have been quite extensively studied in the recent years2' 3,6,[9][10][11][12][13][14][15][16][17][18][19][20][21][22] The actuators used in this paper are the ones developed in6. In the following section, we present the numerical results of these comparative studies without showing much mathematical details which can be found in23 .…”

Section: Introductionmentioning

confidence: 99%

<title>Study of shell interior noise control</title>

Shen

Sun

1997

SPIE Proceedings

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There is a growing interest in the application of smart materials technology to the aircraft interior noise control problem. Some outstanding issues with the interior noise control problem include development of sensory systems that can lead to global sound level reduction in the cabin, and the safety concern of structural actuators used to reduce noise radiation. This paper presents two comparative studies: 1) comparison of several sensor configurations by using acoustic microphones, and 2) comparison of strain fields induced by discrete and distributed structural actuators. A uniform cylindrical shell is used as a simplified model of a section of fuselage. Extensive simulations have been conducted. Major findings of this paper are 1 . In order to control the interior noise in the shell where there is no acoustic source inside, one only needs to place acoustic sensors near the wall. Furthermore, if one uses the energy density as an error signal, one can reduce the number of error input channels substantially. In terms of the ability to lead to the global noise reduction, a 4-channel energy density sensor is found to be comparable to 32 microphones uniformly spaced on a ring.2. Distributed piezoelectric actuators tend to introduce smoother strain fields on the shell than discrete actuators as measured by a strain index defined in the paper. This quantitative result agrees with one' s intuition.Simulation results of adaptive control of multi-tone noise field using discrete and distributed structural actuators are also presented in the paper.

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Piezoelectric strain rate sensor and actuator designs for active vibration control

Cited by 26 publications

References 7 publications

Simultaneous sensing and actuation using piezoelectric materials

Simultaneous sensing and actuation using piezoelectric materials

Actuation development and evaluation for INSTAR: inertially stabilized rifle

<title>Study of shell interior noise control</title>

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