Dynamic modeling of a piezoelectric micro-lens actuator with experimental validation

Rasid, Syed Mamun R; Michael, Aron; Pota, Hemanshu R.

doi:10.1016/j.sna.2023.114344

Cited by 4 publications

(2 citation statements)

References 40 publications

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“…A stick-slip piezoelectric actuator [14] was optimized by using a flexible foot, allowing the actuator to work stably. To reduce response time, Rasid et al [15] proposed a piezoelectric multi-layer actuator instead of electrostatic actuators to drive a micro-lens for imaging applications. Sumit et al [16] studied the static displacement of a piezo actuator made of PZT-5H under high input voltage, and the result is helpful for designers to control the shape and vibration of bending piezo actuators.…”

Section: Introductionmentioning

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: Introductionmentioning

confidence: 99%

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

Wang,

Li,

2023

Materials

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“…This modeling aids in predicting the behavior of these bilayer cantilevers under multifaceted stimuli [16]. For instance, Rasid et al conducted in-depth dynamic modeling of micro-lens actuators, emphasizing the need for intricate modeling in designing cantileverbased devices [17]. Yang et al's studies on the modeling and nonlinear dynamics of various cantilever actuators offer perspectives on device behavior under different scenarios, paving the way for design optimization [18].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Response of Paper-Based Bi-Material Cantilever Actuator

Kumar,

Hatayama,

Rahmani

et al. 2023

Micro

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This work presents a dynamic modeling approach for analyzing the behavior of a bi-material cantilever actuator structure, consisting of a strip of filter paper bonded to a strip of tape. The actuator’s response is induced by a mismatch strain generated upon wetting, leading to the bending of the cantilever. The study delves into a comprehensive exploration of the dynamic deflection characteristics of the bilayer structure. It untangles the intricate connections among the saturation, modulus, hygro-expansion strain, and deflection, while uniquely addressing the challenges stemming from fluid–structure coupling. To solve the coupled fluid–solid differential equations, a combined numerical method is employed. This involves the application of the Highly Simplified Marker and Cell (HSMAC) technique for fluid flow analysis and the Finite Difference Method (FDM) for response deflection computation. In terms of the capillary flow model, the Computational Fluid Dynamics (CFD) simulations closely align with the classical Washburn relationship, depicting the wetted front’s evolution over time. Furthermore, the numerical findings demonstrate that heightened saturation levels trigger an increase in hygro-expansion strain, consequently leading to a rapid rise in response deflection until a static equilibrium is achieved. This phenomenon underscores the pivotal interplay among saturation, hygro-expansion strain, and deflection within the system. Additionally, the actuator’s response sensitivity to material characteristics is highlighted. As the mismatch strain evolving from paper hygro-expansion diminishes, a corresponding reduction in the axial strain causes a decrease in response deflection. The dynamic parameter demonstrates that the deflection response of the bilayer actuator diminishes as dynamic pressure decreases, reaching a minimal level beyond which further changes are negligible. This intricate correlation underscores the device’s responsiveness to specific material traits, offering prospects for precise behavior tuning. The dependence of paper modulus on saturation levels is revealed to significantly influence bilayer actuator deflection. With higher saturation content, the modulus decreases, resulting in amplified deflection. Finally, strong concordance is observed among the present fluidically coupled model, the static model, and empirical data—a testament to the accuracy of the numerical formulation and results presented in this study.

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Systematic evaluation of the radial polarized piezoelectric ceramic micro-tube for high-temperature microfluidics

Zou,

Liu,

Zhang

et al. 2024

Sensors and Actuators A: Physical

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Dynamic modeling of a piezoelectric micro-lens actuator with experimental validation

Cited by 4 publications

References 40 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

Dynamic Response of Paper-Based Bi-Material Cantilever Actuator

Systematic evaluation of the radial polarized piezoelectric ceramic micro-tube for high-temperature microfluidics

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