scholarly journals Development of a 3-DOF Flexible Micro-Motion Platform Based on a New Compound Lever Amplification Mechanism

Micromachines ◽  
2021 ◽  
Vol 12 (6) ◽  
pp. 686
Author(s):  
Fangni Cui ◽  
Yangmin Li ◽  
Junnan Qian
Keyword(s):  
High Precision ◽  
Degrees Of Freedom ◽  
Biological Engineering ◽  
Motion Platform ◽  
Element Simulation ◽  
Lever Mechanism ◽  
Micro Motion ◽  
Amplification Mechanism ◽  
Operation Platform ◽  
Three Degrees Of Freedom

In this paper, a flexible micro-operation platform with three degrees of freedom, large stroke, and high precision is designed to meet the higher demands in the fields of biological engineering and medicine. The platform adopts a compound lever mechanism. The theoretical magnification of the mechanism is 9.627, the simulation magnification is 10.111, and the error is 5.02%. The platform uses a piezoelectric ceramic driver to increase the output stroke to obtain a larger movement space. The composite lever mechanism and new micro-operating platform are studied by theoretical calculation and finite element simulation. The results show that the new flexible micro-operating platform based on the composite lever mechanism has good motion decoupling and high precision.

Performance Optimization for a 3-DOF Micro-Motion Device

2011 ◽  
Vol 291-294 ◽  
pp. 3108-3111 ◽  
Author(s):  
Dan Zhang ◽  
Irene Fassi ◽  
Pei Gang Jiang
Keyword(s):  
Fiber Optics ◽  
Performance Optimization ◽  
Degrees Of Freedom ◽  
Compliant Mechanism ◽  
Parallel Manipulators ◽  
Mechanical Joints ◽  
Micro Motion ◽  
Optics Industry ◽  
And Behavior ◽  
Three Degrees Of Freedom

Traditional parallel manipulators suffer from errors due to backlash, hysteresis, and vibration in the mechanical joints. In this paper, a new 3SPS+RPR spatial compliant mechanism which has three degrees of freedom (DOF) and can generate motions in a microscopic scale is proposed. It can be utilized for biomedical engineering and fiber optics industry. The detailed design of the structure is introduced, followed by the performance evaluation. Then, the genetic algorithms and radial basis function networks are implemented to search for the optimal architecture and behavior parameters in terms of global stiffness/compliance, dexterity and manipulability.

scholarly journals Design and analysis of a 3-DOF planar micromanipulation stage with large rotational displacement for micromanipulation system

2017 ◽  
Vol 8 (1) ◽  
pp. 117-126 ◽  
Author(s):  
Bingxiao Ding ◽  
Yangmin Li ◽  
Xiao Xiao ◽  
Yirui Tang ◽  
Bin Li
Keyword(s):  
Nanoimprint Lithography ◽  
Inverse Kinematics ◽  
Degrees Of Freedom ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Rotational Displacement ◽  
Revolute Joints ◽  
Kinematic Models ◽  
Lever Mechanism ◽  
Three Degrees Of Freedom

Abstract. Flexure-based mechanisms have been widely used for scanning tunneling microscopy, nanoimprint lithography, fast servo tool system and micro/nano manipulation. In this paper, a novel planar micromanipulation stage with large rotational displacement is proposed. The designed monolithic manipulator has three degrees of freedom (DOF), i.e. two translations along the X and Y axes and one rotation around Z axis. In order to get a large workspace, the lever mechanism is adopted to magnify the stroke of the piezoelectric actuators and also the leaf beam flexure is utilized due to its large rotational scope. Different from conventional pre-tightening mechanism, a modified pre-tightening mechanism, which is less harmful to the stacked actuators, is proposed in this paper. Taking the circular flexure hinges and leaf beam flexures hinges as revolute joints, the forward kinematics and inverse kinematics models of this stage are derived. The workspace of the micromanipulator is finally obtained, which is based on the derived kinematic models.

scholarly journals An Investigation on a Novel 3-RCU Flexible Micromanipulator

Micromachines ◽  
2020 ◽  
Vol 11 (4) ◽  
pp. 423 ◽  
Author(s):  
Junnan Qian ◽  
Yangmin Li ◽  
Lukai Zhuge
Keyword(s):  
Carrying Capacity ◽  
Degrees Of Freedom ◽  
Transmission Efficiency ◽  
Element Analysis ◽  
Margin Of Error ◽  
Simulation Results ◽  
Amplification Mechanism ◽  
Working Performance ◽  
Three Degrees Of Freedom ◽  
Ansys Workbench

A novel type of spatial three revolute-cylindrical-universal (3-RCU) flexible micro manipulator is designed based on flexible hinges, and analyzed by finite element analysis (FEA). The piezoelectric actuators are adopted as driving devices in this platform, a new lever amplification mechanism is designed as its micro-displacement amplification mechanism, the workspace of the platform is enlarged, and the theoretical and simulation amplification ratios of the amplification mechanism are 3.056 and 2.985, respectively. The margin of error is just 2.3%. In space, the 3-RCU platform can realize the micro movement of three degrees of freedom. Also, the platform has a high carrying capacity, less motion loss, and the transmission efficiency is higher when the platform works. The decoupling performance, stress under extreme conditions and natural frequency of the platform are simulated by ANSYS Workbench software. A series of simulation analyses show the feasibility and security of the platform. The platform has good decoupling and working performance. The simulation results show that the platform has high simulation stiffness and high positioning accuracy.

Control of Micro Press Using Magnetic Actuating Platform

2006 ◽  
Vol 505-507 ◽  
pp. 1189-1194
Author(s):  
Chieh Li Chen ◽  
Kevin S. Li
Keyword(s):  
High Precision ◽  
Degrees Of Freedom ◽  
Friction And Wear ◽  
Experimental Studies ◽  
Pi Controller ◽  
Plane Motion ◽  
Structure Design ◽  
Motion System ◽  
Driven System ◽  
Three Degrees Of Freedom

In this paper, a new design of three degrees-of-freedom (DOF) plane motion system actuated by electromagnetic forces is proposed and experimentally studied. The advantages of electromagnetic driven system lie in the elimination of the backlash, friction and wear phenomena. With this new structure design the coupling between the z translation, pitching and rolling motions becomes simpler than the conventional designs. A PI controller is applied and achieves the required high precision performance of the system. The experimental studies support the effectiveness of the system.

scholarly journals Active Disturbance Rejection for a Three Degrees of Freedom Gyroscope

2018 ◽  
Vol 51 (13) ◽  
pp. 372-377 ◽  
Author(s):  
Juan E. Andrade García ◽  
Alejandra Ferreira de Loza ◽  
Luis T. Aguilar ◽  
Ramón I. Verdés
Keyword(s):  
Disturbance Rejection ◽  
Degrees Of Freedom ◽  
Active Disturbance Rejection ◽  
Three Degrees Of Freedom
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