Distributed piezoelectric sensor/actuator design for dynamic measurement/control of distributed parameter systems: A piezoelectric finite element approach

“…Two generic types of controller can be used; one requires no model of the system and can be analogue (Gatti et al, 2007) or digital (Fuller et al, 1996), and the other requires a model of the structure to be controlled. The model based controller can be further subdivided into two types: one type uses a numerical model of the structure derived theoretically, using finite element models (Allik and Hughes, 1970;Tzou and Tseng, 1990), for example. The second type involves the determination of a model of the structure using measured input and output data (Wang et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

System identification and active vibration control of a flexible structure

Abreu¹,

Conceição²,

Lopes³

et al. 2012

J. Braz. Soc. Mech. Sci. & Eng.

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“…Flexible structure bounded with distributed sensor and actuator pair investigated thoroughly for vibration attenuation [1][2][3]. The dynamic equation of piezoelectric electroelasticity is formulated by Allik and Hughes and found to be reducible in form to the well-known equations of structural dynamics [1].…”

Section: Introductionmentioning

confidence: 99%

Active vibration reduction of a flexible structure bonded with optimised piezoelectric pairs using half and quarter chromosomes in genetic algorithms

Daraji

Hale

2012

J. Phys.: Conf. Ser.

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Active vibration reduction of a flexible structure bonded with optimised piezoelectric pairs using half and quarter chromosomes in genetic algorithms Abstract. The optimal placement of sensors and actuators in active vibration control is limited by the number of candidates in the search space. The search space of a small structure discretized to one hundred elements for optimising the location of ten actuators gives 1.73 × 10 13 possible solutions, one of which is the global optimum. In this work, a new quarter and half chromosome technique based on symmetry is developed, by which the search space for optimisation of sensor/actuator locations in active vibration control of flexible structures may be greatly reduced. The technique is applied to the optimisation for eight and ten actuators located on a 500×500mm square plate, in which the search space is reduced by up to 99.99%. This technique helps for updating genetic algorithm program by updating natural frequencies and mode shapes in each generation to find the global optimal solution in a greatly reduced number of generations. An isotropic plate with piezoelectric sensor/actuator pairs bonded to its surface was investigated using the finite element method and Hamilton's principle based on first order shear deformation theory. The placement and feedback gain of ten and eight sensor/actuator pairs was optimised for a cantilever and clamped-clamped plate to attenuate the first six modes of vibration, using minimization of linear quadratic index as an objective function.

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Distributed piezoelectric sensor/actuator design for dynamic measurement/control of distributed parameter systems: A piezoelectric finite element approach

Cited by 586 publications

References 13 publications

3D time-domain spectral elements for stress waves modelling

3D time-domain spectral elements for stress waves modelling

System identification and active vibration control of a flexible structure

Active vibration reduction of a flexible structure bonded with optimised piezoelectric pairs using half and quarter chromosomes in genetic algorithms

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