Control of elastic displacement in piezoelectric-based intelligent plate subjected to thermal load

Ashida, Fumihiro; Choi, Jeongseok; Noda, Naotake

doi:10.1016/s0020-7225(97)80004-3

Cited by 14 publications

(2 citation statements)

References 12 publications

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“…The present study extends the previous work (Ashida, Choi and Noda, 1997) to the case of transient response. We present a model of the intelligent solid state actuator which gives a desired elastic displacement distribution, adapting to the transient temperature change of the surrounding medium.…”

Section: Introductionsupporting

confidence: 84%

“…Second, when a prescribed heating temperature acted on the structural layer, an applied electric potential of the piezoceramic layer which controlled the induced thermoelastic displacement of the structural layer was determined (Choi, Ashida and Noda, 1997;. Furthermore, an extension of these works to study an intelligent problem was presented (Ashida, Choi and Noda, 1997). In this case, the piezoceramic layer served both to sense the unknown temperature change and to control the thermoelastic displacement of the structural layer.…”

Section: Introductionmentioning

confidence: 99%

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Control of Transient Thermoelastic Displacement in a Piezoelectric Based Intelligent Plate

Ashida

Noda

2001

Journal of Intelligent Material Systems and Structures

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The present paper deals with an intelligent solid state actuator which can control a distribution of thermoelastic displacement at submicron order, in the case where unknown transient heating temperature acts on the actuator. The intelligent actuator consists of an isotropic structural layer onto which two piezoceramic layers of crystal class 6 mm are perfectly bonded. First, by analyzing an inverse problem of transient piezothermoelasticity, the unknown heating temperature acting on the structural layer is inferred from the electric potential induced in the middle piezoceramic layer. Next, analysis of a control problem leads to a transient electric potential applied to the top piezoceramic layer which gives the desired elastic displacement distribution on the free surface of the structural layer. Finally, numerical results are illustrated graphically.

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Section: Introductionsupporting

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Control of Transient Thermoelastic Displacement in a Piezoelectric Based Intelligent Plate

Ashida

Noda

2001

Journal of Intelligent Material Systems and Structures

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Control of the transient thermoelastic displacement of a functionally graded rectangular plate bonded to a piezoelectric plate due to nonuniform heating

Ootao

Tanigawa

2001

Acta Mechanica

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Reduction of applied electric potential controlling thermoelastic displacement in a piezoelectric actuator

Ashida

1999

Archive of Applied Mechanics (Ingenieur Archiv)

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The present paper discusses how to reduce the applied electric potential which controls a distribution of the elastic displacement, when temperature change induces elastic deformation in a piezoelectric-based solid state actuator. The actuator consists of an isotropic structural plate, onto which multiple piezoelectric ceramic plates of crystal class 6mm are perfectly bonded. The analysis of this thermoelastic problem leads to electric potential applied to piezoelectric ceramic plates. Numerical calculations are carried out for an isotropic steel plate, onto which multiple cadmium-selenide plates are perfectly bonded. Finally, it is shown that the maximum applied electric potential in the case of ten cadmium selenide plates can be reduced to 11% of that derived from the previous study of a similar problem of one cadmium selenide plate bonded onto an isotropic steel plate. IntroductionDisplacement-control unit accurate to submicron is required in the areas of optics, astronomy and super precision machining. In controlling such a microscopic displacement, elastic deformation in the actuator induced by change of the temperature should be estimated, because it is very dif®cult to strictly maintain the thermal conditions of the surrounding medium. Now, piezoelectric materials possess a coupling effect between elastic and electric ®elds. Recent interest in the use of such piezoelectric materials as sensors and/or actuators operating in thermal environments is evidenced by some publications [1±12].The concept of utilizing a piezoelectric ceramic plate as an actuator controlling thermoelastic displacement was examined in [7±9]. The actuator was constructed of an isotropic structural plate, onto which a piezoelectric ceramic plate of crystal class 6mm was perfectly bonded. When heating temperature acted on the bottom surface, and then the combined plate was deformed, the applied electric potential on the top surface was derived which gave the prescribed distribution of normal elastic displacement on the bottom surface. It was shown numerically that the applied electric potential was very high. This presents a serious problem for practical applications of this actuator, and it must be solved. A solution to the problem is to lay other piezoelectric ceramic plates on the top of the combined plate.In order to reduce the applied electric potential, the present paper deals with displacement control of an isotropic structural plate onto which multiple piezoelectric ceramic plates of crystal class 6mm are perfectly bonded. This thermoelastic problem is analyzed by means of the potential function method, and the applied electric potential is derived. Numerical results are obtained for the temperatures, stresses and applied electric potential in an isotropic steel plate, onto which multiple cadmium selenide plates of crystal class 6mm are perfectly bonded. The effects of the number and thicknesses of the cadmium-selenide plates on the stresses and applied electric potential are investigated. As compared with the numerical results, ...

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Control of elastic displacement in piezoelectric-based intelligent plate subjected to thermal load

Cited by 14 publications

References 12 publications

Control of Transient Thermoelastic Displacement in a Piezoelectric Based Intelligent Plate

Control of Transient Thermoelastic Displacement in a Piezoelectric Based Intelligent Plate

Control of the transient thermoelastic displacement of a functionally graded rectangular plate bonded to a piezoelectric plate due to nonuniform heating

Reduction of applied electric potential controlling thermoelastic displacement in a piezoelectric actuator

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