Performance improvement of a piezoelectric bimorph actuator by tailoring geometry

Chattaraj, Nilanjan; Ganguli, Ranjan

doi:10.1080/15376494.2017.1308590

Cited by 14 publications

(4 citation statements)

References 12 publications

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“…The geometry of a piezoelectric bimorph is generally rectangular, but with this structure, it is difficult to provide the displacement and force needed by the alignment system. Furthermore, it has been reported that the trapezoidal piezoelectric bimorph has advantages in force and torque output [26]. In order to clarify the output difference between the two bimorphs, we established a rectangular piezoelectric bimorph model and a trapezoidal piezoelectric bimorph model.…”

Section: Structure Of Piezo Actuator For Optical Fiber Alignmentmentioning

confidence: 99%

Design and Control of a Trapezoidal Piezoelectric Bimorph Actuator for Optical Fiber Alignment

Wang,

Li,

2023

Materials

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To align a pair of optical fibers, it is required that the micro actuators used be small and have the characteristics of high accuracy and fast response time. A trapezoidal piezoelectric bimorph actuator was proposed for pushing and pulling an optical fiber. Based on a mathematical model and finite element model established in this paper, we analyzed the output displacement and output force of the proposed trapezoidal piezoelectric actuator under the influence of structural parameters. Since the piezoelectric bimorph actuator had a hysteresis effect, we applied particle swarm optimization to establish a Prandtl–Ishlinskii (PI) model for actuator and parameter identification. Then, two control methods, namely feedforward control considering hysteresis effects and fuzzy proportional-integral-derivative (PID) control employing feedback, were proposed. Finally, a composite control model combining the two control methods with fewer tracking errors was designed. The results show that the output displacement of this actuator is larger than that of a rectangular one. Additionally, the fuzzy PID control has a lower response time (15 ms) and an overshoot (5%).

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Section: Structure Of Piezo Actuator For Optical Fiber Alignmentmentioning

confidence: 99%

Design and Control of a Trapezoidal Piezoelectric Bimorph Actuator for Optical Fiber Alignment

Wang,

Li,

2023

Materials

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“…Recently, Sumit et al [ 15 ] developed an analytical model to study the effect of nonlinear coefficients on the response of unimorph and bimorph actuators using a second-order constitutive equation. Chattaraj & Ganguli [ 16 ] studied the performance improvement of piezoelectric cantilever bimorph by altering its geometry using electro-elastic nonlinearity under a strong electric field. Experimental analysis for assessing the dynamic performance of piezoelectric cantilever bimorph considering material nonlinearity is presented by Ahoor et al [ 17 ].…”

Section: Introductionmentioning

confidence: 99%

A Study on the Effect of Piezoelectric Nonlinearity on the Bending Behaviour of Smart Laminated Composite Beam

et al. 2023

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This paper presents a finite element analysis to model and analyze composite laminated beams with distributed piezoelectric actuators attached to the top and bottom surfaces considering nonlinear constitutive equations under a high electric field. The static response is presented for piezoelectric composite laminated beam using higher order electric field nonlinearity to assess the effect of electrostriction and elastostriction coefficient at a high electric field. A finite element approach based on higher-order shear deformation theory is applied for static analysis of composite laminated beams, varying the thickness and orientation of laminates, to verify the nonlinear effect under a high electric field. A good comparison of results is shown with the available results in the literature. The finding of the results highlights the importance of considering elastostriction term along with the electrostriction term in determining the deflection and stresses of the composite laminated beam.

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“…They usually have a large output force but a short working distance [17]. Conventional piezoelectric actuators include multilayer [18], tube [19], disk [20] and bender [21] types. In order to increase their working distance and achieve various motion types, piezoelectric benders can be combined with mechanical motion amplification systems [22].…”

Section: Introductionmentioning

confidence: 99%

Linear displacement and force characterisation of a 3D-printed flexure-based delta actuator

Chen

Kiziroglou

Yeatman

2022

Smart Mater. Struct.

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Piezoelectric beams provide a fast, high-force and scalable actuation mechanism that could offer precise motion control to medical microdevices including invasive micromanipulators, catheters and diagnosis tools. Their small displacement range can be addressed by motion amplification mechanisms. In this paper, a piezoelectric-actuated delta-robot actuator is proposed for probe-based confocal laser endomicroscopy (pCLE) microsystems. A prototype is designed and fabricated using three-dimensional (3D) polymer compound printing for a multi-flexure compliant motion amplifier and commercial piezoelectric beams. The flexure material is optimised for maximum linear output motion. The overall robot length is 76 mm and its maximum lateral dimension is 32 mm, with 10 g overall mass, including three piezoelectric beams. An axial motion control range of 0.70 mm and a maximum axial force of 20 mN are demonstrated, at 140 V actuation voltage. The proposed actuator architecture is promising for controlling lens, fibre and micromanipulator components for medical microrobotic applications.

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Performance improvement of a piezoelectric bimorph actuator by tailoring geometry

Cited by 14 publications

References 12 publications

Design and Control of a Trapezoidal Piezoelectric Bimorph Actuator for Optical Fiber Alignment

Design and Control of a Trapezoidal Piezoelectric Bimorph Actuator for Optical Fiber Alignment

A Study on the Effect of Piezoelectric Nonlinearity on the Bending Behaviour of Smart Laminated Composite Beam

Linear displacement and force characterisation of a 3D-printed flexure-based delta actuator

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