scholarly journals Improvement of Zero Suspension Force Performance Using a Special Magnet for a Magnetic Suspension Device

2011 ◽  
Vol 2-3 ◽  
pp. 1099-1104
Author(s):  
Feng Sun ◽  
Koichi Oka ◽  
Jun Jie Jin
Keyword(s):  
Permanent Magnet ◽  
Suspension System ◽  
Magnetic Suspension ◽  
Attractive Force ◽  
Special Shape ◽  
Comparison Results ◽  
Improvement Method ◽  
Magnetic Suspension System

This paper proposes an improvement method of zero suspension force performance using a special permanent magnet for a magnetic suspension device. The zero suspension force of a permanent magnetic suspension device is indispensable for floating off when the suspended object is stuck on accidentally. Generally, the magnetic suspension system using permanent magnet is difficult to realize the zero suspension force, since the permanent magnet cannot make its attractive force zero. However, the proposed magnetic suspension device has realized the semi-zero power suspension and semi-zero suspension force, which mainly consists of a disk-shape permanent magnet, two “F” shape iron cores, a suspended object, and an actuator. In the magnetic suspension device, since there is magnetic leakage, the suspension force could not be made exact zero. Therefore, in this paper, the zero suspension force will be improved using a special shape permanent magnet. The comparison results indicate that the zero suspension force is decreased about 80 percent.

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.

Analysis of Noncontact Conveyance Using Manipulator and Permanent Magnet

1999 ◽  
Author(s):  
Koichi Oka ◽  
Toshiro Higuchi
Keyword(s):  
Permanent Magnet ◽  
Degrees Of Freedom ◽  
Robot Manipulator ◽  
Suspension System ◽  
Magnetic Suspension ◽  
Experimental Result ◽  
Linear Actuator ◽  
Control Schemes ◽  
Magnetic Suspension System ◽  
Contact Control

Abstract It is known that a magnetic suspension system can be made with a permanent magnet and a linear actuator. The linear actuator is used to control the air gap and makes a suspension system stable. By the application of this suspension mechanism, we can develop the robot manipulator with the function of noncontact conveyance using a permanent magnet. The object carrying capability and system stabilization are combined. Noncontact conveyance may be useful for clean or vacuum environments. This paper describes analysis when a manipulator picks, carries, and places an object without mechanical contact. First, the principle of the suspension mechanism and the concept of the noncontact conveyance are explained. An experimental manipulator system which has two degrees of freedom of movement is introduced. This system is theoretically analyzed providing information necessary to suspend the object without contact. Control schemes of the states of picking, carrying, and placing are proposed, and an experimental result of noncontact conveyance is shown. Control parameters of states of picking and placing arc analyzed by numerical simulation, and it is shown that there exist optimal parameters.

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
Sign in / Sign up

Export Citation Format

Share Document