A three-degree-of-freedom piezoelectric-driven micro-gripper with posture adjustment DOI

Haomiao Fang

Review of Scientific Instruments, Journal Year: 2025, Volume and Issue: 96(4)

Published: April 1, 2025

This study presents a novel three-degree-of-freedom piezoelectric-driven micro-gripper with an integrated amplifying mechanism, designed to guarantee high precision, size compactness, and controllability. Unlike conventional micro-grippers, the proposed design enables simultaneous attitude adjustment during clamping process in all three directions of x, y, z, significantly enhancing its dexterity functionality. The clamped object is secured x-direction, rotated y-direction, translated linearly z-direction. To evaluate design’s performance, matrix-based compliance modeling analysis implemented calculate output deformation yielding displacement 141.39 μm. In addition, finite element employed holding range validate structural strength mechanism z. Subsequently, experimental investigations are conducted comprehensively performance stiffness under varying driving voltage frequency. results demonstrate that two-stage lever achieves amplification ratio 8.7 times producing 87.66 μm bandwidth frequency 219 Hz. gripper attains maximum rotation speed 508.85 μm/s input 350 Hz, resolution 70 V. z-direction, moving 30.87 110 67.5 feasibility high-precision, potential for advanced micromanipulation applications, such as micro-assembly, biomedical handling, precision manufacturing.

Language: Английский

Multi-directional and multi-modal vortex-induced vibrations for wind energy harvesting DOI Creative Commons
Cuipeng Xia, Lihua Tang, Peilun Yin

et al.

Applied Physics Letters, Journal Year: 2024, Volume and Issue: 125(20)

Published: Nov. 11, 2024

A conventional vortex-induced vibration (VIV)-based energy harvester is typically restricted to capturing wind from a very limited range of directions, making it inefficient in varying conditions. This Letter proposes tri-section beam configuration for VIV-based piezoelectric enable harnessing incident angle with different modes being triggered. The finite element analysis investigates the harvester's mode shapes and natural frequencies. tunnel experiment conducted comparative study output performance harvesters straight beams. findings show that proposed can efficiently capture much wider angles, as opposed specific directions its counterpart beam. also widen lock-in speed higher bending triggered achieve optimal power 1.388 mW when works second at frequency, superior (0.386 mW) only work first mode. sheds light on developing multi-directional multi-modal adapted conditions environments.

Language: Английский

Citations

5
Turbulent separation control with a tilted wavy wall: A promising approach for energy savings in aerodynamic systems DOI
Piotr Kamiński, Artur Tyliszczak, Witold Elsner

et al.

Energy, Journal Year: 2025, Volume and Issue: unknown, P. 135758 - 135758

Published: March 1, 2025

Language: Английский

Citations

0
A three-degree-of-freedom piezoelectric-driven micro-gripper with posture adjustment DOI

Haomiao Fang

Review of Scientific Instruments, Journal Year: 2025, Volume and Issue: 96(4)

Published: April 1, 2025

This study presents a novel three-degree-of-freedom piezoelectric-driven micro-gripper with an integrated amplifying mechanism, designed to guarantee high precision, size compactness, and controllability. Unlike conventional micro-grippers, the proposed design enables simultaneous attitude adjustment during clamping process in all three directions of x, y, z, significantly enhancing its dexterity functionality. The clamped object is secured x-direction, rotated y-direction, translated linearly z-direction. To evaluate design’s performance, matrix-based compliance modeling analysis implemented calculate output deformation yielding displacement 141.39 μm. In addition, finite element employed holding range validate structural strength mechanism z. Subsequently, experimental investigations are conducted comprehensively performance stiffness under varying driving voltage frequency. results demonstrate that two-stage lever achieves amplification ratio 8.7 times producing 87.66 μm bandwidth frequency 219 Hz. gripper attains maximum rotation speed 508.85 μm/s input 350 Hz, resolution 70 V. z-direction, moving 30.87 110 67.5 feasibility high-precision, potential for advanced micromanipulation applications, such as micro-assembly, biomedical handling, precision manufacturing.

Language: Английский

Citations

0