Title :
Design considerations for permanent magnet polarised electromagnetically actuated brakes
Author :
Zhu, Z.Q. ; Jewell, G.W. ; Howe, D.
Author_Institution :
Dept. of Electron. & Electr. Eng., Sheffield Univ., UK
fDate :
11/1/1995 12:00:00 AM
Abstract :
A permanent magnet, series polarised electromagnetic actuator for controlling friction brakes, on fork-lift trucks and other vehicles, has been designed and tested. The force capability is enhanced significantly by utilising flux focusing and optimising the magnetic circuit, while a critical performance feature is that the attractive force developed at both inner and outer air gaps becomes zero simultaneously when an appropriate coil MMF is applied
Keywords :
brakes; electric actuators; electromagnetic devices; magnetic circuits; permanent magnets; vehicles; attractive force; design considerations; flux focusing; force capability; fork-lift trucks; friction brakes control; inner air gaps; magnetic circuit optimisation; outer air gaps; permanent magnet electromagnetic actuator; series polarised electromagnetic actuator; vehicles; Actuators; Air gaps; Circuit testing; Coils; Electromagnetic forces; Electromagnetic wave polarization; Friction; Magnetic circuits; Permanent magnets; Vehicles;
Journal_Title :
Magnetics, IEEE Transactions on
