Robust Controller Design for Magnetic Suspension System

The magnetic suspension system is a strong nonlinear, uncertain and open-loop unstable system. All of these factors have increased the difficulty of maglev controller design. Considering the single freedom maglev system as the research object in this paper, structure analysis and modeling design are conducted for the system. By choosing new state variables, the system model is transformed. On the basis of that, we use back stepping design method to design the nonlinear suspension controller. Control performance of the controller can be observed by the Matlab/Simulink simulation.

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Robust controller design for Maglev transport vehicles with a guide-effective electromagnetic suspension system

Proceedings of 35th IEEE Conference on Decision and Control ◽

10.1109/cdc.1996.572665 ◽

2002 ◽

Author(s):

M. Morishita

Keyword(s):

Controller Design ◽

Suspension System ◽

Robust Controller ◽

Electromagnetic Suspension ◽

Robust Controller Design

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LQG-Based Robust Control of Active Automobile Suspension

Dynamic Systems and Control, Volumes 1 and 2 ◽

10.1115/imece2003-43601 ◽

2003 ◽

Cited By ~ 1

Author(s):

H. Porumamilla ◽

A. G. Kelkar

Keyword(s):

Closed Loop ◽

Ride Comfort ◽

Controller Design ◽

Control Design ◽

Suspension System ◽

Robust Controller ◽

Automobile Suspension ◽

Active Feedback ◽

Active Feedback Control ◽

Robust Controller Design

This paper presents robust controller design for an active automobile suspension system using an interative LQG design technique. The main objective is to design an active feedback control for an automobile suspension system to ensure the ride comfort for passengers in the presence of unknown road disturbances. The control system designed is shown to be robust to uncertainties and parametric variations. The resulting interative LQG-based control design is shown to achieve a significant improvement in the performance, while maintaining a desired level of closed-loop stability that is robust to plant uncertainties and parametric variations. The controller design is also compared to some other active suspension designs published in the literature.

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On the H∞ Controller Design for a Magnetic Suspension System Model

IFAC Proceedings Volumes ◽

10.3182/20130204-3-fr-4031.00055 ◽

2013 ◽

Vol 46 (3) ◽

pp. 320-324

Author(s):

E. Karagül ◽

H. özbay

Keyword(s):

Controller Design ◽

Suspension System ◽

Magnetic Suspension ◽

System Model ◽

Magnetic Suspension System

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Magnetic suspension mechanism using rotary permanent magnets

International Journal of Applied Electromagnetics and Mechanics ◽

10.3233/jae-209412 ◽

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.

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