Sage Journals: Discover world-class research

Abstract

The parallel permanent magnetic suspension system using flux-path control is composed of a servo motor, a radially magnetized disk magnet, and a pair of magnetizers. Establishing an accurate mathematical model is difficult owing to the system's special structure and nonlinear characteristics. To acquire an accurate mathematical model, an autoregressive exogenous (ARX) model identification method is applied to the system. First, the system input and output data are acquired from the suspension experiment. Then, an ARX model is established utilizing the data from the system identification method. Lastly, the relevant simulations and experiments are carried out to verify the validity of the ARX model. The results show that the simulation data with the ARX model closely agree with the test data obtained from the same controller. This model identification method can provide a better way to acquire a more accurate mathematical model for improving the controller.

Keywords

Permanent magnetic suspension model identification ARX model

Get full access to this article

View all access options for this article.

References

Sun

and Oka

, Development of Noncontact Suspension Mechanism Using Flux Path Control Disk Magnet Rotation, Transactions of the Japan Society of Mechanical Engineers76(771) (2010), 2916-2922.

Jang

J.Y.

, Kim

J.Y.

and Kim

S.C.

, A research on design method and theoretical analysis of electromagnetic suspension system considering magnetic interface between coils, IEEE Transactions on Applied Superconductivity21(3) (2011), 1523-1527.

Janssen

J.L.G.

, Paulides

J.J.H.

and Lomonova

E.A.

, 3-D Analytical Calculation of the Torque Between Perpendicular Magnetized Magnets in Magnetic Suspension, IEEE Transactions on Magnetics47(10) (2011), 4286-4289.

Zhang

, Zhang

and Huang

, Hybrid non-linear differentiator design for a permanent electromagnetic suspension maglev system, The Institution of Engineering and Technology6(6) (2012), 559-567.

Song

C.S.

, Zhang

J.G.

and Zhang

J.G.

, Dynamic Modeling of MSI Based on a Hybrid Approach and Experiment Verification, China Mechanical Engineering25(14) (2014), 1929-1934.

Wang

J.G.

, Guo

and Zhu

C.G.

, System identification of a positioning stage based on theoretical modeling and an ARX model, Journal of Vibration and Shock32(13) (2013), 66-69.

Zeng

Q.G.

, Yang

C.H.

, Ka

et al., An Experimental and Simulation Study of Touchdown Dynamics, IEEE Transactions on Magnetic47(10) (2011), 3433-3436.

Sun

and Oka

, Magnetic Suspension Using Variable Flux Path Control Mechanism with Permanent Magnet (Simultaneous Suspension Experiment of Two Iron Balls), Transactions of the Japan Society of Mechanical Engineers (C)78(792) (2012), 2771-2780.

Model identification and analysis for parallel permanent magnetic suspension system based on ARX model

Abstract

Keywords

Get full access to this article

References