Title :
The influence of magnetization pattern on the performance of a cylindrical moving-magnet linear actuator
Author :
Clark, Richard E. ; Howe, David ; Jewell, Geraint W.
Author_Institution :
Dept. of Electron. & Electr. Eng., Sheffield Univ., UK
fDate :
9/1/2000 12:00:00 AM
Abstract :
This paper is concerned with the influence of the magnetization process on the performance of a cylindrical moving-magnet linear actuator, specifically the extent to which actuator performance, in terms of force-stroke profile, is compromised by the use of homopolar magnetized ring magnets. Finite element modeling of both an ideal radially magnetized ring magnet and a ring magnet on which the magnetization has been imparted by an impulse magnetization fixture is performed, and the results are validated by experimental measurements on a prototype actuator
Keywords :
electric actuators; finite element analysis; force; linear motors; machine testing; machine theory; magnetisation; permanent magnet motors; permanent magnets; cylindrical moving-magnet linear actuator performance; finite element modeling; force-stroke profile; homopolar magnetized ring magnets; impulse magnetization fixture; magnetization pattern effect; magnetization process; Coils; Finite element methods; Fixtures; Hydraulic actuators; Magnetic analysis; Magnetic materials; Magnetization processes; Performance evaluation; Permanent magnets; Saturation magnetization;
Journal_Title :
Magnetics, IEEE Transactions on
