Characteristic Improvement of VR Linear Motor with Enlarged Pole Surface

Abstract

This paper presents novel pole design with enlarged pole surface for the purpose of increase thrust/volume ratio without changing a gap length in a linear motor. Two pole designs are investigated by the finite element analysis and experiments. As a result, it is clear that the thrust increase about 7—20% compared with a conventional design, by using the arc pole design. And an normal force decrease about 25—50% compared with a conventional design.