Results 21 to 30 of about 1,062 (175)

Modeling and Design Optimization of a New Piezoelectric Inchworm Actuator with Screw Clamping Mechanisms

Micromachines, 2022
A new piezoelectric inchworm actuator with screw clamping mechanisms has been developed recently for the wing folding mechanism of a small unmanned aircraft where the actuator power density is a great concern.
Haichao Sun, Yunlai Shi, Qiang Wang, Xing Li, Junhan Wang   +4 more
doaj   +1 more source

Low-frequency broadband multidirectional vibration isolation by piezoelectric smart platform with active control

Journal of Low Frequency Noise, Vibration and Active Control, 2023
A high-precision equipment is very sensitive to vibration, even micro vibration. How to isolate the low-frequency broadband multidirectional vibration remains a challenge.
Wentao Zou, Ningdong Hu, Xue Yang, Hongping Hu   +3 more
doaj   +1 more source

Design of a Panoramic Scanning Device Based on a Piezoelectric Ceramic Stack Actuator and Friction Transmission

Actuators, 2022
In view of the complex structure and inaccurate positioning capabilities of the existing panoramic scanning system, a panoramic scanning device based on a piezoelectric ceramic stack actuator and friction transmission was designed.
Minpeng Dai, Hao Ding, Chenwei Huang, Yi Zhu, Ming Wang   +4 more
doaj   +1 more source

Development of a Novel Piezoelectric Actuator Based on Stick–Slip Principle by Using Asymmetric Constraint

Micromachines, 2023
In this work, a novel piezoelectric actuator based on the stick–slip principle is proposed. The actuator is constrained by an asymmetric constraint approach; the driving foot produces lateral and longitudinal coupling displacements when the piezo stack ...
Liang Wang, Heran Wang, Junxiang Jiang, Tianwen Luo   +3 more
doaj   +1 more source

An Umbrella-Shaped Linear Piezoelectric Actuator Based on Stick-Slip Motion Principle

IEEE Access, 2019
Piezoelectric actuators are widely utilized in many research and industrial fields, since they could achieve high positioning accuracy based on inverse piezoelectric effect.
Jiafeng Yao, Junjie Cai, Yili Hu, Jianming Wen, Nen Wan, Hao Wang, Jianping Li   +6 more
doaj   +1 more source

A Miniaturized Piezo Stack Impact Actuation Mechanism for Out-of-Plane Freely Moveable Masses

Micromachines, 2023
We present the prototype and analytical model of a miniaturized impact actuation mechanism, providing a fast out-of-plane displacement to accelerate objects against gravity, allowing for freely moving objects and hence for large displacements without the
Matthias C. Wapler, Constantin Peter, Koustav Kanjilal, Ulrike Wallrabe   +3 more
doaj   +1 more source

A Novel Hybrid Actuator Driven Magnetically in the Bi-Cell PEM Fuel Cell Stack

Metals, 2017
This study develops an air breathing pump driven by a piezoelectric actuator for a proton exchange membrane fuel cell (PEMFC) stack. Permanent magnets are combined with a piezoelectric actuator to drive three air breathing pumps using magnetic force ...
Hsiaokang Ma, Yuanlung Hsu, Poching Hsu
doaj   +1 more source

A computationally efficient model to capture the inertia of the piezoelectric stack in impact drive mechanism in the case of the in-pipe inspection application [PDF]

Mechanical Sciences, 2016
This paper presents a new model for the piezoelectric actuator (PA) in the context of in the impact drive mechanism (IDM) for the in-pipe inspection application.
J. Li, C. J. Liu, X. W. Xiong, Y. F. Liu, W. J. Zhang   +4 more
doaj   +1 more source

Extrusion‐Based Additive Manufacturing of Advanced Ceramics: Strengthening Mechanisms and Process Optimization Review

Advanced Engineering Materials, EarlyView.
This review comprehensively evaluates extrusion‐based additive manufacturing for advanced ceramics, detailing feedstock options and key process parameters. By critically addressing defect mechanisms like porosity and cracking, the work highlights optimization strategies through machine learning and advanced postprocessing.
Meisam Bakhtiari, Mohammad Hadi Sheikh‐Ansari, Avinash Borgaonkar, Mehran Dadkhah, Abdollah Saboori   +4 more
wiley   +1 more source

Bond Graph Modeling and Simulation of Hybrid Piezo-Flexural-Hydraulic Actuator

Engineering Proceedings
In this study, a hybrid piezo-flexural-hydraulic actuator is modeled and simulated using bond graph methodology. The hybrid actuator comprises piezoelectric stack actuator, mechanical flexural amplifier, and hydraulic piston actuator.
Rudraksha Kelkar, Mohith Santhya, Mithun Kanchan, Omkar S. Powar   +3 more
doaj   +1 more source