Title :
Flux distribution and back-iron influence of tubular linear motors
Author :
Yan, Liang ; Hu, Jie ; Jiao, Zongxia ; Chen, I-Ming ; Lim, Chee Kian
Author_Institution :
Sch. of Auto. Sci. & Elec. Engi., Beihang Univ., Beijing, China
Abstract :
Ferromagnetic material affects the magnetic field of electromagnetic actuators significantly. This paper studies the effect of back iron on magnetic field of linear motors. Designs of linear motors with single-sided, double-sided, and without back irons are analyzed quantitatively. The magnetic field for different structures is formulated analytically based on magnetic vector potential. The simulation result is compared with numerical result from finite element calculation. It shows that the analytical model fits with numerical result closely, and the use of back iron helps to enhance the magnetic field of linear motors.
Keywords :
electromagnetic actuators; ferromagnetic materials; finite element analysis; linear motors; machine theory; back iron effect; electromagnetic actuators; ferromagnetic material; finite element analysis; flux distribution; magnetic field; magnetic vector potential; tubular linear motors; Induction motors; Iron; Magnetic fields; Magnetic flux; Magnetic levitation; Mathematical model; Permanent magnet motors; Electromagnetic actuator; Linear motor; Magnetic field modeling;
Conference_Titel :
Fluid Power and Mechatronics (FPM), 2011 International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-8451-5
DOI :
10.1109/FPM.2011.6045890
