Title :
Ball-bearing motor effect with rolling cylinders
Author :
Watson, D.B. ; Patel, S.M. ; Sedcole, N.F.
Author_Institution :
Dept. of Electr. & Electron. Eng., Canterbury Univ., Christchurch, New Zealand
fDate :
3/1/1999 12:00:00 AM
Abstract :
A force in the direction of motion is exerted on a metal cylinder when rolling on metal rails connected to a current source. The force is almost directly proportional to the current and to the mass of the rolling cylinder. A model involving thermal expansion is put forward to explain these results
Keywords :
linear motors; machine bearings; machine theory; rolling friction; thermal expansion; torque; ball-bearing motor effect; current source connected; metal cylinder; model; rolling cylinders; rolling on metal rails; thermal expansion; torque;
Journal_Title :
Science, Measurement and Technology, IEE Proceedings -
DOI :
10.1049/ip-smt:19990289
