Article
Instruments & Instrumentation
Kan Wang, Dai-Hua Wang, Jian-Yu Zhao, Song Hou
Summary: This study proposes and realizes a principle of a PCM-based piezoelectric-actuated microgripper, which integrates microassembly force, gripping force, and jaw-displacement sensors to ensure parallel movement of jaws during microassembly process. The designed microgripper can simultaneously acquire microassembly force, gripping force, and jaw-displacement with high sensitivity, linearity, and resolution in gripping and not gripping micropart.
SMART MATERIALS AND STRUCTURES
(2022)
Proceedings Paper
Engineering, Electrical & Electronic
Teferi Sitotaw Yallew, Maria F. Pantano, Alvise Bagolini
Summary: Micromanipulation devices are essential tools for studying cell biology and mechanics, with the designed and simulated microgripper presented in this paper being able to precisely manipulate biological samples.
2021 SYMPOSIUM ON DESIGN, TEST, INTEGRATION & PACKAGING OF MEMS AND MOEMS
(2021)
Article
Engineering, Mechanical
Xiaodong Chen, Kang Tai, Huifeng Tan, Zhimin Xie
Summary: This paper addresses the issue of parasitic motion in microgripper jaws and its impact on clamping accuracy, and proposes a symmetrically stressed parallelogram mechanism as a solution. Through mechanical modeling and experimental validation, the effectiveness of this method is demonstrated.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2024)
Article
Engineering, Mechanical
Zekui Lyu, Zehao Wu, Qingsong Xu
Summary: This paper presents the design, modeling, optimization, simulation, and experimental study of a new asymmetric flexible microgripper driven by a piezoelectric actuator. The gripper design is guided by a new guideline and features a consistent working mode and non-dense mode of resonance. The gripper mechanism consists of a three-stage flexure amplification mechanism which achieves friction-free and clearance-free displacement amplification. The performance of the flexure hinge is optimized and the kinematic, static, and dynamic models of the gripper are derived. Simulations and experiments verify the working stroke, clamping force, and resonant frequency of the designed gripper.
MECHANISM AND MACHINE THEORY
(2022)
Article
Instruments & Instrumentation
Xiaodong Chen, Zhimin Xie, Kang Tai, Huifeng Tan, Xueyan Chen
Summary: This paper introduces a two-stage amplification microgripper based on structural stiffness driven by pneumatics, in response to the limitation of further improving the amplification ratio of the compliant motion amplification mechanism. The mechanism features good symmetry, compact structure, and large output displacement, and can reduce the relative error of the theoretical and experimental amplification ratios. By selecting high-stiffness mechanisms and hinges for the first stage and low-stiffness mechanisms and hinges for the second stage, the arrangement order and specific dimensions of the mechanism are optimized to achieve optimal amplification performance. Experimental results show a displacement amplification ratio of 41.8 for both opening and closing of the microgripper.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2023)
Article
Optics
Bibek R. Samanta, Flavio Pardo, Todd Salamon, Rose Kopf, Michael S. Eggleston
Summary: This paper presents an electrothermally actuated MEMS mirror capable of reliable linear raster scanning with a large angular range of motion. A simple pulse design technique and segmented polysilicon microheaters are used to achieve high-speed scanning and low power consumption.
Review
Engineering, Electrical & Electronic
Zekui Lyu, Qingsong Xu
Summary: The piezoelectric-actuated compliant microgripper (PEACM) is crucial in various application fields due to its advantages of high accuracy of displacement, large power to weight ratio, low energy consumption, and fast response speed. This paper reviews recent advances in performance indices, classification, structural composition, optimization and modeling method, and control of PEACM, providing an overview of design and development directions for the microgripper.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Engineering, Multidisciplinary
Zekui Lyu, Qingsong Xu
Summary: This paper introduces the design, modeling, optimization, simulation, and experiment of a novel piezoelectrically actuated compliant microgripper. The microgripper has a larger displacement, higher area-usage efficiency, and better piezoelectric actuator utilization efficiency compared to previous designs. The micromanipulation capability of the gripper is demonstrated by gripping objects of different sizes and shapes.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Parham Dadash Pour, Mehdi Ghommem, Abdessattar Abdelkefi
Summary: This study demonstrates the impact of incorporating perforations on the operation of microgrippers, improving their performance in terms of displacement and temperature. A novel design of microgripper using perforated electrothermal actuators was introduced, achieving better operation and lower stress. Computational modeling and experimental verification were conducted to analyze the effects of different perforation shapes and distributions.
APPLIED SCIENCES-BASEL
(2023)
Article
Chemistry, Analytical
Nicola Pio Belfiore, Alvise Bagolini, Andrea Rossi, Gabriele Bocchetta, Federica Vurchio, Rocco Crescenzi, Andrea Scorza, Pierluigi Bellutti, Salvatore Andrea Sciuto
Summary: This study presents the development of a new microgripper actuated by rotary-comb drives with CSFH flexures. The adoption of multiple CSFHs allows for complex mechanical structures and increased design parameters. The fabricated microgripper has been tested in the lab and the results were used to evaluate simulation tools for minimizing expensive equipment in operational environments.
Article
Automation & Control Systems
Zekui Lyu, Qingsong Xu, Limin Zhu
Summary: In this paper, a new piezoelectric-actuated biaxial compliant microgripper with long strokes is proposed for automatically gripping and rolling tiny rigid objects. The microgripper has been optimized structurally and its performance has been simulated using finite element analysis. Experimental results show that the developed microgripper has the capability to grasp and roll tiny rigid objects, making it promising for precision micromanipulation tasks such as optical fiber alignment.
IEEE TRANSACTIONS ON AUTOMATION SCIENCE AND ENGINEERING
(2023)
Article
Engineering, Mechanical
Tilok Kumar Das, Bijan Shirinzadeh, Ammar Al-Jodah, Mohammadali Ghafarian, Joshua Pinskier
Summary: This paper presents a compliant piezoelectric actuated microgripper for precise positioning tasks with a parasitic motion minimization approach and displacement transmission and amplification mechanisms for achieving linear output motion. The design is optimized for low parasitic motion and large output displacement, with experimental studies confirming the characteristics including low parasitic motion and high precision motion resolution.
MECHANISM AND MACHINE THEORY
(2021)
Article
Engineering, Electrical & Electronic
Tailong Liu, Teng Pan, Peng Wang, Shuijie Qin, Huikai Xie
Summary: In this paper, an open-loop control method based on the transfer function of the MEMS mirror is proposed to optimize the overall optical trajectory scanned on the sample under a MEMS OCT probe, correcting the scanning nonlinearity and distortion, and improving the imaging quality.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Engineering, Mechanical
Fangxin Chen, Qianjun Zhang, Yongzhuo Gao, Wei Dong
Summary: This article presents a piezo-actuated microgripper characterized by large amplification ratio and compact structure size. The microgripper is actuated by a piezo-stack actuator that is integrated with a two-stage displacement amplifier to achieve large travel range. A new design methodology flexure hinge individualized design (FHID) was proposed to realize large amplification ratio. The developed microgripper was modeled and evaluated through kinematics, finite element analysis, and experimental studies.
JOURNAL OF MECHANICAL DESIGN
(2022)
Article
Engineering, Electrical & Electronic
Jianyang Cai, Junfeng Hu
Summary: A novel spatial micro gripper for manipulating objects of different sizes and irregular shapes was presented. The gripper uses a two-stage lever principle and optimization based on support vector machine to improve its opening distance and clamping stability. Experimental results show that the micro gripper can stably clamp objects, demonstrating the effectiveness of the design concept and optimization method.
MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND PROCESSING SYSTEMS
(2022)
