Forces on a line current moving above a discontinuous ground plane

摘要

The forces acting on a current‐carrying wire moving above a ground plane with discontinuities are investigated. Two types of discontinuities are considered: (i) a gap, and (ii) a step. In both cases, the forces on the wire are calculated and graphed for different wire locations. The relevance of these calculations to guideway discontinuities in magnetically levitated systems is pointed out.