Modelling of Piezoelectric Actuator Dynamics for Active Structural Control

Hagood, Nesbitt W.; Chung, Wingyan; Flotow, A. von

doi:10.1177/1045389x9000100305

Cited by 531 publications

(273 citation statements)

References 4 publications

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“…It can be verified that the multivariable transfer function matrix relating to is given by (9) 4 Note that this is consistent with the sensor equation in [21]. A point that is needed to be clarified here is what happens when in (9).…”

Section: Feedback Structure Of Charge-driven Piezoelectric Laminatessupporting

confidence: 48%

Resonant control of structural vibration using charge-driven piezoelectric actuators

Moheimani

Vautier

2004

2004 43rd IEEE Conference on Decision and Control (CDC) (IEEE Cat. No.04CH37601)

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Abstract-Driving piezoelectric actuators by charge, or current rather than voltage is known to significantly reduce the hysteretic nature of these actuators. Although this feature of piezoelectric transducers has been known to the researchers for some time, still voltage amplifiers are being used as the main driving mechanism for piezoelectric devices. This is due to the perceived difficulty in building charge/current amplifiers capable of driving highly capacitive loads such as piezoelectric actuators. Recently, a new charge amplifier has been proposed which is ideal for driving piezoelectric loads used in applications such as active damping of vibration. Consequently, it is now possible to effectively, and accurately control the charge deposited on the electrodes of a piezoelectric transducer, and thereby avoid hysteresis altogether. This paper further investigates properties of piezoelectric transducers driven by charge sources when used with resonant controllers for structural vibration control applications. The paper reports experimental results of a multivariable resonant controller implemented on a piezoelectric laminate cantilever beam.

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Section: Feedback Structure Of Charge-driven Piezoelectric Laminatessupporting

confidence: 48%

Resonant control of structural vibration using charge-driven piezoelectric actuators

Moheimani

Vautier

2004

2004 43rd IEEE Conference on Decision and Control (CDC) (IEEE Cat. No.04CH37601)

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“…In this approach, a forcing function F (t) is applied to the system and an effective mass M is bounded on a spring of effective stiffness K, on a damper of coefficient η m , and on a piezoelectric element characterized by effective piezoelectric coefficient and capacitance C p . These effective coefficients are dependent on the material constants and the design of energy harvesters and can be derived using the standard modal analysis [25,38,45,46].…”

Section: A Piezoelectric Power Harvesting Modelmentioning

confidence: 99%

Efficiency of energy conversion for a piezoelectric power harvesting system

Shu

Lien

2006

J. Micromech. Microeng.

282

204

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This paper studies the energy conversion efficiency for a rectified piezoelectric power harvester. An analytical model is proposed, and an expression of efficiency is derived under steady-state operation. In addition, the relationship among the conversion efficiency, electrically induced damping and ac-dc power output is established explicitly. It is shown that the optimization criteria are different depending on the relative strength of the coupling. For the weak electromechanical coupling system, the optimal power transfer is attained when the efficiency and induced damping achieve their maximum values. This result is consistent with that observed in the recent literature. However, a new finding shows that they are not simultaneously maximized in the strongly coupled electromechanical system.

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“…The development of a state-space model of the beam with its actuators and sensor was presented in [20]. This model was based on a Rayleigh-Ritz formulation in which the assumed shapes were taken to be the first five exact Although this device is not entirely independent of external chips for support circuitry, it is used to suggest what could be achieved with further specialization and customization.…”

Section: Mathematical Model Of the Plantmentioning

confidence: 99%

Embedded electronics for intelligent structures

Warkentin

1991

32nd Structures, Structural Dynamics, and Materials Conference

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Intelligent structures with integrated control systems consisting of large numbers of distributed sensors, actuators, and processors have been proposed for the precision control of structures. This report examines the feasibility of physically embedding the electronic components of such systems. The hardware implications of functionality distribution are addressed, and it is shown that highly distributed systems can have substantially fewer communications lines and faster control loop speeds than conventional approaches, at the cost of embedding electronic circuit chips. A technique for the embedding procedure is presented which addresses electrical, mechanical, and chemical compatibility issues. Test specimens with functioning integrated circuits successfully embedded within graphite/epoxy composite laminates were subjected to static and cyclic mechanical loads, demonstrating nominal electrical function above normal design load limits. Operation of test specimens in a high temperature/humidity environement allowed the identification of a corrosive failure mode of the leads or lead-chip bonds. The application of a single-chip microcomputer to the control of a structural vibration problem demonstrates the potential for the development of monolithic integrated circuit devices capable of performing distributed processing tasks required for fully integrated intelligent structures.

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Modelling of Piezoelectric Actuator Dynamics for Active Structural Control

Cited by 531 publications

References 4 publications

Resonant control of structural vibration using charge-driven piezoelectric actuators

Resonant control of structural vibration using charge-driven piezoelectric actuators

Efficiency of energy conversion for a piezoelectric power harvesting system

Embedded electronics for intelligent structures

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