scholarly journals On-Chip Particle Sorting into Multiple Channels by Magnetically Driven Microtools

2011 ◽  
Vol 23 (3) ◽  
pp. 370-377 ◽  
Author(s):  
Masaya Hagiwara ◽  
◽  
Miyako Niimi ◽  
Tomohiro Kawahara ◽  
Yoko Yamanishi ◽  
...  
Keyword(s):  
Degrees Of Freedom ◽  
Permanent Magnets ◽  
Low Cost ◽  
Fem Analysis ◽  
Multiple Channels ◽  
Positioning Accuracy ◽  
Particle Sorting ◽  
New Type ◽  
On Chip ◽  
Sorting System

This paper presents a new type of sorting system by magnetic microtools (MMT) separating particles into multiple channels. Two nickel-based MMTs are activated by commercially available permanent magnets below the biochip to lead particles to certain channels via fluid force. The horizontally assembled permanent magnet drive we developed shows that the MMT positioning accuracy had been improved 5 times in 2 degrees of freedom. The channel and the MMT shape are determined based on FEM analysis to ensure that particles flow smoothly. We have successfully achieved to sort 100 µm diameter microbeads into 7 branched channels. The noncontact drive and disposable chip provide a less invasive environment for the cell with low cost.

A Low-Cost and High-Resolution Micro Machine Tool With Toggle-Based Mechanism

2014 ◽  
Author(s):  
Shih-Ming Wang ◽  
Chih-Peng Yang ◽  
Zhe-Zhi Ye ◽  
Chuntai Yen
Keyword(s):  
Machine Tool ◽  
Low Cost ◽  
Dynamic Compliance ◽  
Cnc Machine ◽  
Positioning Accuracy ◽  
New Type ◽  
Weight Structure ◽  
Micro Machine ◽  
Fine Resolution ◽  
Micro Machine Tool

The products of 3C, bioscience, medical industry, and aerospace industry are becoming smaller and smaller. The components of the products are made of various materials with complex 3D shapes requiring high accuracy in their dimensions and contours. An accurate micro-/meso-scale CNC machine tool is an essential part of this technology. A new type of CNC micro machine tool with a toggle-like mechanism having the characteristics of low-cost and fine-resolution was developed. With geometric reduction principle, the machine can provide finer feed resolution and better positioning accuracy without using high-end driving components and controller. The kinematics model and characteristics of the machine were derived and analyzed. Modal analysis and dynamic compliance analysis were employed to design a light-weight structure with good stiffness. The accuracy calibration results showed the machine can reach a positioning accuracy of 500 nm. Prototype of the machine was built, and furthermore some micro machining examples were demonstrated in this paper.

scholarly journals Research on the designing of pneumatic positioning units controlled with valves commanded in modulated pulses

2019 ◽  
Vol 290 ◽  
pp. 08003
Author(s):  
Mihai Avram ◽  
Victor Constantin ◽  
Emil-Ionuț Niță
Keyword(s):  
Closed Loop ◽  
Low Cost ◽  
Positioning System ◽  
Electronic Control ◽  
Mechatronic System ◽  
Positioning Accuracy ◽  
Braking System ◽  
Electronic Control System ◽  
New Type ◽  
Specific Construction

This article presents the hardware structure for a new type of closed loop positioning system using pneumatic energy. In brief, when the mobile subassembly of the system is about to reach a targeted position its speed is controlled by the small-sized pneumatic electro valves, which are commanded in modulated pulses. Here, we developed an electronic control system of which memory has a specially designed algorithm. In addition, the pneumatic engine has a specific construction that integrates a transducer of position as well as a braking system. The proposed mechatronic system is described by good positioning accuracy and low cost.

scholarly journals Smart Bluetooth beacon based on LoRa Positioning method and system research

2021 ◽  
Vol 2079 (1) ◽  
pp. 012032
Author(s):  
Rui Su ◽  
Yawen Dai
Keyword(s):  
Real Time ◽  
Low Cost ◽  
Real Life ◽  
Signal Attenuation ◽  
Positioning Accuracy ◽  
Positioning Method ◽  
New Type ◽  
Positioning Analysis ◽  
Transmission Speed ◽  
Indoor And Outdoor

Abstract In the era of the Internet of Everything, applications based on real-time location continue to appear in various industries. The indoor and outdoor positioning, analysis and management of personnel and objects can effectively improve the efficiency of production and management, which is of great significance to many industries. The use of Bluetooth beacon positioning has the advantages of low energy consumption, low cost, and fast data transmission speed. However, in real life, there are two obstacles to receiving signals, which are easily affected by the environment and the need for frequent on-site maintenance. This paper designs and implements a new type of LoRa-based smart Bluetooth beacon, which can be quickly connected to LoRa. Online monitoring and remote control can achieve better adaptation to the environment, and can fit a better signal attenuation model in the deployment environment in real time. Traditional signal strength positioning solutions have their own limitations. In order to improve the positioning accuracy of the Bluetooth beacon and the universality of the algorithm, in view of the low deployment density of beacons, the positioning accuracy is not good and the anchor circle has various situations, an optimized weighted centroid positioning scheme integrating greedy strategy is proposed.

Flexible Laparoscopic Forceps Manipulator Using Synchronous Belt Mechanism

2014 ◽  
Vol 607 ◽  
pp. 303-306 ◽  
Author(s):  
Song Ping Chen ◽  
Yong Xian Li ◽  
Gui Bin Li ◽  
Jian Lin Wang
Keyword(s):  
Laparoscopic Surgery ◽  
Degrees Of Freedom ◽  
Low Cost ◽  
Belt Drive ◽  
Positioning Accuracy ◽  
Drive Mechanism ◽  
Simple Operation ◽  
High Rigidity ◽  
The Poor ◽  
Synchronous Belt Drive

In laparoscopic surgery, many problems are due to the poor degrees of freedom (DOF) of movement in controlling the forceps and laparoscopes. This paper proposes a new flexible laparoscopic forceps manipulator using synchronous belt drive mechanism, which consist of two miniaturized parts, synchronous belt drive mechanism enables independent bending procedure from-90° to 90° at the tip of forceps, and friction wheel mechanism which provides pivoting motion of forceps around incision hole on the abdomen. This mechanism is simple with high rigidity and can easily be miniaturized. The most remarkable characteristics of the prototype described in this paper are: 1) the casing diameter of the forceps is 5 mm; 2) with high rigidity and the repeatability positioning accuracy was 0.5o in bending motion; 3) pure mechanical structure with simple operation and low cost. This manipulator can solve the conflicts and blockings in laparoscopic surgery by switching back and forceps towards, meanwhile, it eliminates the surgical doctor’s fatigue and enhances the precision of surgery with higher effectiveness and safety as well.

scholarly journals Research on a New Type of Rigid-Flexible Coupling 3-DOF Micro-Positioning Platform

Micromachines ◽  
2020 ◽  
Vol 11 (11) ◽  
pp. 1015
Author(s):  
Guilian Wang ◽  
Yong Wang ◽  
Bingrui Lv ◽  
Ruopeng Ma ◽  
Li Liu
Keyword(s):  
Bearing Capacity ◽  
Degrees Of Freedom ◽  
Simulation Analysis ◽  
Experimental System ◽  
Positioning Accuracy ◽  
Flexible Coupling ◽  
Flexible Hinge ◽  
Drive Mechanism ◽  
New Type ◽  
Wedge Structure

A new type of rigid-flexible coupling three degrees of freedom (3-DOF) micro-positioning platform with high positioning accuracy and high bearing capacity is developed, which consists of flexible drive mechanism and rigid platform. The flexible drive mechanism consists of three sets of symmetrical parallel round flexible hinge structures, each with a wedge structure in the middle of the symmetrical parallel flexible hinge. The rigid platform has an inclined plane with the same angle as the wedge, while the wedge structure is used to achieve the self-locking effect. The flexibility matrix method and ANSYS are used to analyze the statics of the flexible drive mechanism. The first four natural frequencies of the platform are obtained by dynamic simulation analysis. A symmetrical rigid flexible coupling micro-positioning platform experimental system is developed. Output characteristics, positioning accuracy, relationship between frequency and amplitude, and bearing performance of the micro-positioning platform are tested. These experimental results obviously show that the micro-positioning platform has good motion characteristics, high positioning accuracy, large movement distance, and large load bearing capacity performance.

A Low-Cost and High-Resolution Micromachine Tool With Toggle-Based Mechanism

2015 ◽  
Vol 3 (1) ◽  
Author(s):  
Shih-Ming Wang ◽  
Zhe-Zhi Ye ◽  
Chih-Peng Yang ◽  
Chuntai Yen
Keyword(s):  
Low Cost ◽  
Dynamic Compliance ◽  
Numerical Control ◽  
Cnc Machine Tool ◽  
Cnc Machine ◽  
Positioning Accuracy ◽  
New Type ◽  
Weight Structure ◽  
Fine Resolution ◽  
3D Shapes

The products of 3C, bioscience, medical industry, and aerospace industry are becoming smaller and smaller. The components of the products are made of various materials with complex 3D shapes requiring high accuracy in their dimensions and contours. An accurate micro-/mesoscale computer numerical control (CNC) machine tool is an essential part of this technology. A new type of CNC micromachine tool with a togglelike mechanism having the characteristics of low-cost and fine-resolution was developed. With geometric reduction principle, the machine can provide finer feed resolution and better positioning accuracy without using high-end driving components and controller. The kinematics model and characteristics of the machine were derived and analyzed. Modal analysis and dynamic compliance analysis were employed to design a light-weight structure with good stiffness. The accuracy calibration results showed the machine can reach a positioning accuracy of 500 nm. Prototype of the machine was built, and furthermore, some micromachining examples were demonstrated in this paper.

On-chip Particle Sorting into Multiple Channels by Magnetically Driven Microtools

2010 ◽  
Vol 2010.5 (0) ◽  
pp. 373-378
Author(s):  
Masaya Hagiwara ◽  
Tatsuya Shioiri ◽  
Miyako Niimi ◽  
Tomohiro Kawahara ◽  
Yoko Yamanishi ◽  
...  
Keyword(s):  
Multiple Channels ◽  
Particle Sorting ◽  
On Chip

Magnetic suspension mechanism using rotary permanent magnets

2020 ◽  
Vol 64 (1-4) ◽  
pp. 977-983
Author(s):  
Koichi Oka ◽  
Kentaro Yamamoto ◽  
Akinori Harada
Keyword(s):  
Permanent Magnets ◽  
Suspension System ◽  
Magnetic Suspension ◽  
Horizontal Force ◽  
Mechanical Contact ◽  
New Type ◽  
Magnetic Suspension System

This paper proposes a new type of noncontact magnetic suspension system using two permanent magnets driven by rotary actuators. The paper aims to explain the proposed concept, configuration of the suspension system, and basic analyses for feasibility by FEM analyses. Two bar-shaped permanent magnets are installed as they are driven by rotary actuators independently. Attractive forces of two magnets act on the iron ball which is located under the magnets. Control of the angles of two magnets can suspend the iron ball stably without mechanical contact and changes the position of the ball. FEM analyses have been carried out for the arrangement of two permanent magnets and forces are simulated for noncontact suspension. Hence, successfully the required enough force against the gravity of the iron ball can be generated and controlled. Control of the horizontal force is also confirmed by the rotation of the permanent magnets.

Study and design of dual stator permanent magnet machine with spoke-type configurations using phase-group concentrated-coil windings

2020 ◽  
Vol 64 (1-4) ◽  
pp. 1381-1389
Author(s):  
Dezhi Chen ◽  
Chengwu Diao ◽  
Zhiyu Feng ◽  
Shichong Zhang ◽  
Wenliang Zhao
Keyword(s):  
Permanent Magnet ◽  
Permanent Magnets ◽  
Low Cost ◽  
Dynamic Performance ◽  
Torque Ripple ◽  
Permanent Magnet Machine ◽  
Torque Density ◽  
Phase Group ◽  
High Torque ◽  
Simulation Results

In this paper, a novel dual-stator permanent magnet machine (DsPmSynM) with low cost and high torque density is designed. The winding part of the DsPmSynM adopts phase-group concentrated-coil windings, and the permanent magnets are arranged by spoke-type. Firstly, the winding structure reduces the amount of copper at the end of the winding. Secondly, the electromagnetic torque ripple of DsPmSynM is suppressed by reducing the cogging torque. Furthermore, the dynamic performance of DsPmSynM is studied. Finally, the experimental results are compared with the simulation results.

Sign in / Sign up

Export Citation Format

Share Document