Title :
Novel High-Speed Electromagnetic Actuator With Permanent-Magnet Shielding for High-Pressure Applications
Author :
Man, Jun ; Ding, Fan ; Li, Qipeng ; Da, Jing
Author_Institution :
State Key Lab. of Fluid Power Transm. & Control, Zhejiang Univ., Hangzhou, China
Abstract :
We present a novel moving-iron, high-pressure, high-speed electromagnetic actuator that utilizes permanent-magnet (PM) shielding for increasing air-gap flux. We analyze its static and dynamic characteristics by using the finite-element method, taking into account the nonlinear characteristics and the eddy-current loss of the magnetic material. The experimental and simulated results agree well and show that the actuator has a displacement of 0.6 mm, closing time of 2.24 ms, and opening time of 7.78 ms without latching force.
Keywords :
eddy current losses; electromagnetic actuators; finite element analysis; magnetic shielding; permanent magnets; air-gap flux; distance 0.6 mm; eddy-current loss; finite element method; high-pressure applications; high-pressure electromagnetic actuator; high-speed electromagnetic actuator; magnetic material; moving-iron electromagnetic actuator; permanent-magnet shielding; time 2.24 ms to 7.78 ms; Actuators; Coils; Force; Magnetic flux leakage; Magnetic noise; Magnetic shielding; Permanent magnets; Electromagnetic actuator; high speed; permanent magnet; shielding;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2010.2078826
