Title :
Simplified thrust limit equation of linear DC motor
Author :
Wakiwaka, H. ; Yajima, H. ; Senoh, S. ; Yamada, H. ; Oda, J. ; Morimura, T.
Author_Institution :
Fac. of Eng., Shinshu Univ., Nagano, Japan
fDate :
9/1/1996 12:00:00 AM
Abstract :
In this paper, examination of the limiting value of the thrust constant of a linear DC motor (LDM) is described. The LDM under consideration is a moving coil unipolar type. We deduce a relation between the limiting value of the thrust constant LDM and the dimensions of the yokes. By comparison of the measured thrust and the magnetic field analysis (finite element method), the validity of the thrust constant limit equation is confirmed. The thrust constant limit equation qualitatively agrees with the observed result, and its maximum error is 26.0 percent. It also agrees well with the result of the magnetic field analysis
Keywords :
DC motors; finite element analysis; linear motors; machine theory; finite element method; linear DC motor; magnetic field analysis; moving coil unipolar type motor; thrust constant limit equation; yoke; Coils; DC motors; Equations; Finite element methods; Magnetic analysis; Magnetic circuits; Magnetic field measurement; Magnetic fields; Magnetic flux; Magnetic flux density;
Journal_Title :
Magnetics, IEEE Transactions on
