Multicore Linear Stepping Motor Energization
Original Publication Date: 1984-Dec-01
Included in the Prior Art Database: 2005-Feb-06
A linear stepping motor configuration comprises multiple E-core stators 10 arranged on one side of armature 11. Cooperating E-core stators 12 are arranged on the under side of armature 11. Each leg of the upper E-core stators 10 is wound with a bifilar winding (not shown). The bifilar windings are energized in a manner and sequence such that opposite polarities exist in adjacent stators 10. Fig. 2a shows the polarity for a linear stepping motor with two E-cores 10. In this arrangement the energization of the ABC and DEF coils produces magnetization of adjacent poles which prevents magnetic cross-coupling. Fig. 2b shows the sequence of energization. Fig. 3 shows the polarization for a motor with three E-cores with windings AB, DE, and AB of the respective E-cores energized to prevent magnetic coupling.