scholarly journals Optimal Control of Magnetic Suspension System for Linear Driving Mechanism. 1st Report. Derivation of PID Control Rules.

1995 ◽  
Vol 61 (584) ◽  
pp. 1374-1380
Author(s):  
Shitta Shingu
Keyword(s):  
Optimal Control ◽  
Pid Control ◽  
Suspension System ◽  
Magnetic Suspension ◽  
Driving Mechanism ◽  
Control Rules ◽  
Magnetic Suspension System

Influence of Suspension Mass Variation on Dynamic Characteristic of Magnetic Suspension System

2012 ◽  
Vol 150 ◽  
pp. 63-68 ◽  
Author(s):  
Xiao Guang Wang ◽  
Bin Mei ◽  
Feng Sha ◽  
Xin Zhou
Keyword(s):  
Nonlinear System ◽  
Dynamic Characteristic ◽  
Pid Control ◽  
Great Influence ◽  
Suspension System ◽  
Magnetic Suspension ◽  
Mass Variation ◽  
Magnetic Suspension System ◽  
The Relationship ◽  
Key Parameter

Magnetic suspension system is nonlinear and unstable essentially. It is according to the principle of nonlinear system having same topological structure near the operation point with the linear system that linear control arithmetic for a nonlinear system is adopted. The system is easy to lose stabilize and diverge when subjected to interference or system parameters variation. Suspension mass is a key parameter of a magnetic suspension system and suspension mass variation has great influence on the dynamic characteristic of a magnetic suspension system. The influence of suspension mass variation on the dynamic characteristic of a magnetic suspension system under the PID control condition is discussed. The relationship between dynamic characteristic and structure as well as control parameters of the magnetic suspension system is reached by means of experimental method.

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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