METHOD FOR CONTROLLING LINEAR SINGLE-WINDING PERCUSSIVE ELECTROMAGNETIC MOTOR Russian patent published in 1999 - IPC

FIELD: electrical engineering. SUBSTANCE: working motion of motor armature takes place due to single winding system and its reset occurs due to mechanical force of, say, reset spring. First voltage pulse is applied during working motion of armature, second and next pulses, during no-load running with period not longer than total time of working and no-load motion; pulse is applied at moment corresponding to air gap δ_on at which armature speed is reversed at point with armature position coordinate equal to initial working air gap δ_in; δ_on< δ_in. EFFECT: improved specific percussive energy and increased efficiency of motor. 2 dwg