Design and performance of an optical measurement system for position measurement and control in a large gap magnetic suspension system

1994 ◽  
Author(s):  
Sharon S. Welch
Keyword(s):  
Measurement System ◽  
Optical Measurement ◽  
Suspension System ◽  
Magnetic Suspension ◽  
Position Measurement ◽  
Optical Measurement System ◽  
Magnetic Suspension System ◽  
And Performance ◽  
And Control ◽  
Measurement And Control

Proposal of Noncontact Operation Robotic Hand Using Permanent Magnetic Suspension

2013 ◽  
Vol 712-715 ◽  
pp. 2277-2280
Author(s):  
Zhong Xu ◽  
Feng Sun ◽  
Jun Jie Jin ◽  
Koichi Oka
Keyword(s):  
Permanent Magnet ◽  
Permanent Magnets ◽  
Suspension System ◽  
Magnetic Suspension ◽  
Robotic Hand ◽  
Magnetic Suspension System ◽  
Metal Body ◽  
And Performance

This paper proposes a noncontact operation robotic hand using magnetic suspension system. This robotic hand will consist of a noncontact catching part and four movable fingers. The noncontact catching part will be realized by a permanent magnetic suspension system, and will be used to pick up and catch the metal body. There is a permanent magnet on the top of each moveable finger, which operates the suspended metal body without contact. This paper focuses on the feasibility and performance of the noncontact operation using the movable fingers with permanent magnets.

An Optical Tool for Measuring Vortex-Induced Vibrations of Long Flexible Cylinders

2012 ◽  
Author(s):  
Francisco J. Huera-Huarte
Keyword(s):  
Wind Tunnel ◽  
Measurement Technique ◽  
Measurement System ◽  
Optical Measurement ◽  
Measurement Techniques ◽  
Flexible Cylinder ◽  
Response Measurement ◽  
Optical Measurement System ◽  
Vortex Induced Vibrations ◽  
And Performance

We describe the design and performance of a novel optical measurement system that can be used for measuring vortex-induced vibrations (VIV) of long flexible cylinders. We believe this is the first time this technology has been used to measure VIV in a long flexible cylinder. The emphasis is given to the measurement technique itself. It can be used either in air or in water and we believe it is a better alternative to other traditional vibration response measurement techniques used to study VIV in the laboratory. The measurement system is based on the Defocusing Digital Image Particle Velocimetry (DDPIV) concept, proposed by Willert and Gharib in [1] for measuring velocity flow fields. A set-up, which was built to conduct vortex-induced vibration measurements in a wind tunnel facility with a cross-section of 1.8 × 1.2 m, has been used in a laboratory to demonstrate the capabilities of the optical measurement system when known displacements are produced in the mappable or measurement volume. The same supporting structure designed to provide suport for the cylinder models inside the wind tunnel test section, has been used to hold a target which has been move to different known locations to measure the performance of the system. The design, description and performance of the measurement technique are discussed.

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.

scholarly journals Two-Axis Magnetic Suspension System with Dual Variable Flux-Path Units

2011 ◽  
Vol 5 (6) ◽  
pp. 1226-1237
Author(s):  
Kazuya NISHIMURA ◽  
Takeshi MIZUNO ◽  
Yuji ISHINO ◽  
Masaya TAKASAKI ◽  
Yasuhiro SAKAI
Keyword(s):  
Suspension System ◽  
Magnetic Suspension ◽  
Dual Variable ◽  
Magnetic Suspension System ◽  
Variable Flux ◽  
Flux Path
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