Analysis of a diamond-shaped mechanical amplifier for a piezo actuator

Zhou, Huixing; Henson, Brian

doi:10.1007/s00170-005-0303-7

Cited by 31 publications

(19 citation statements)

References 7 publications

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“…Concerning the ordinary bridge-type amplifier, its amplification ratios have been calculated using different approaches in the literature [16,19,20]. Mostly, each flexure hinge in the amplifier is considered as a one-degree-of-freedom (1-DOF) revolute joint associated with a torsional spring and other elements are taken as rigid bodies.…”

Section: Analytical Static Modelingmentioning

confidence: 99%

“…Mostly, each flexure hinge in the amplifier is considered as a one-degree-of-freedom (1-DOF) revolute joint associated with a torsional spring and other elements are taken as rigid bodies. Thus, a pseudo-rigid-body model [24] of the amplifier is constructed and various methods based on the geometric relations analysis [16,20], instantaneous velocity analysis [19], and so on have been applied to derive the amplification ratio of the device. In addition, by taking each flexure hinge as a 2-DOF joint with translational and rotational stiffnesses, the virtual work principle is utilized in [19] to calculate the amplification ratio of the amplifier.…”

Section: Analytical Static Modelingmentioning

confidence: 99%

“…1) has the advantages of large amplification ratio and compact size. In the literature, the bridge-type amplifier has been investigated for both meso-and microscale applications [15][16][17][18][19][20]. However, a drawback of this bridge-type amplifier lies in that its lateral stiffness is relatively low.…”

Section: Introductionmentioning

confidence: 98%

See 2 more Smart Citations

Analytical modeling, optimization and testing of a compound bridge-type compliant displacement amplifier

2011

Mechanism and Machine Theory

219

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Section: Analytical Static Modelingmentioning

confidence: 99%

Section: Analytical Static Modelingmentioning

confidence: 99%

See 1 more Smart Citation

Analytical modeling, optimization and testing of a compound bridge-type compliant displacement amplifier

2011

Mechanism and Machine Theory

219

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“…PEA-driven positioning systems have also been developed with various configurations, for example, 1-degree-of-freedom (1-DOF) positioning systems with flexure hinge mechanisms [11,12], stick-slip actuators [13], multiple PEAs-driven inchworms [14], or walking actuators [15]; multi-DOF positioning systems with series mechanism [16], parallel mechanism [17], or stick-and-clamping actuators [18]. In all positioning control applications, the hysteresis and creep effects of PEAs have shown to be able to significantly degrade the system performance and even system stability [19].…”

Section: Introductionmentioning

confidence: 99%

A Survey of Modeling and Control of Piezoelectric Actuators

Peng¹,

Xiongbiao²

2013

MME

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Piezoelectric actuators (PEAs) have been widely used in micro-and nanopositioning applications due to their fine resolution, fast responses, and large actuating forces. However, the existence of nonlinearities such as hysteresis makes modeling and control of PEAs challenging. This paper reviews the recent achievements in modeling and control of piezoelectric actuators. Specifically, various methods for modeling linear and nonlinear behaviors of PEAs, including vibration dynamics, hysteresis, and creep, are examined; and the issues involved are identified. In the control of PEAs as applied to positioning, a review of various control schemes of both model-based and non-model-based is presented along with their limitations. The challenges associated with the control problem are also discussed. This paper is concluded with the emerging issues identified in modeling and control of PEAs for future research.

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“…Among the number of presented concepts of mechanical amplification was one where the strain is concentrated at specific hinge points through the use of a deformable frame. Zhou and Henson [10] first reviewed different mechanical amplifier mechanisms that increase the displacement of the piezo actuator, called diamond-shaped mechanical amplifiers. In the theoretical analysis, the authors derived expressions for the forces, displacements and stresses produced by the amplifier.…”

Section: Introductionmentioning

confidence: 99%

Piezoelectric control of the static behaviour of flextensional actuators with constricted hinges

Przybylski

2014

Smart Mater. Struct.

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The objective of this paper is to present the mathematical modelling and computational testing of the static operational performance and effectiveness of flextensional actuators comprised of two rectilinear or initially deflected beams placed equidistantly from a centrally located piezoceramic stack in the form of a rod. The beams are mounted by stiff links with an offset to a piezoelectric transformer. A monolithic hinge lever mechanism is applied by cutting constricted hinges at the links to generate and magnify the in-plane displacement created by the application of a voltage to the piezorod. Structures of such a type have been commonly used as passive or active actuators since the manufacturing of the mechanism’s prototypes in the form of Moonie or cymbal actuators. An analytical model of the actuator is developed on the basis of stationary values of the total potential energy principle with the use of the von Kármán non-linear strains theory. During the numerical computations, the deflection and internal axial force generated by both the externally distributed load and the the application of an electric field are determined by changing the actuator properties such as the distance between the beams and the rod, the amplitude of the beam’s initial displacement as well as the stiffness of the constricted hinges. Additionally, the application of structure prestressing is considered to avoid an undesired stretching of the piezo stack. It has been shown that for the flextensional actuator with a very high flexibility of constricted hinges, the generated transverse displacement is limited by the maximum electric field as the characteristic property for each piezoceramic material. A vast number of numerical results exhibit the mechanical responses of the transducer of different geometrical and physical properties to piezoelectric stimulation; this has potential applications in the design process of such actuators.

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Analysis of a diamond-shaped mechanical amplifier for a piezo actuator

Cited by 31 publications

References 7 publications

Analytical modeling, optimization and testing of a compound bridge-type compliant displacement amplifier

Analytical modeling, optimization and testing of a compound bridge-type compliant displacement amplifier

A Survey of Modeling and Control of Piezoelectric Actuators

Piezoelectric control of the static behaviour of flextensional actuators with constricted hinges

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