LINEAR INDUCTOR MOTOR Russian patent published in 1995 - IPC

FIELD: precision linear drives. SUBSTANCE: motor has toothed ferromagnetic stator 1 and movable member 2 built up of electromagnetic phase modules incorporating U-shaped cores 6, 7, control windings 8, and permanent field magnets 9; toothed portions of stator 1 and movable member 2 have equal pitch τ,; movable member 2 has three electromagnetic modules 3, 4, 5; module 3 is shifted from module 4 along direction of movement through -(n+1/3)(n+1/3)τ, and module 5 is shifted from module 4 through +(n+1/3)(n+1/3)τ,; U-shaped cores 6 and 7 in each module are spaced apart along direction of movement through (n+1/6)(n+1/6)τ.. EFFECT: improved performance of electric drive due to higher accuracy of control of linear motor tractive force. 1 dwg