Browse Prior Art Database

Commutated Voice Coil

IP.com Disclosure Number: IPCOM000066779D
Original Publication Date: 1979-Apr-01
Included in the Prior Art Database: 2005-Feb-20

Publishing Venue

IBM

Related People

Authors:
Swartz, JS [+details]

Abstract

Small size linear actuators, such as a voice coil motor, which have a long gap and a short coil, have the problem of pole saturation due to the large magnet size and resultant high flux densities. On the other hand, short gap, long coil motors can have serious solenoid effects which result in nonlinear force constants and leakage flux forces which can contribute to nonlinear forces.