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Motor with redundant windings

  • US 4,434,389 A
  • Filed: 10/28/1980
  • Issued: 02/28/1984
  • Est. Priority Date: 10/28/1980
  • Status: Expired due to Term
First Claim
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1. A DC electric servomotor comprising:

  • a pair of relatively movable members, one being the stator and the other being the rotor of said electric servomotor;

    said stator including at least two sets of distributed, non-overlapping redundant windings spaced apart for minimal magnetic coupling therebetween, each of said windings being independently excitable to produce a reversible magnetic field for rotating said rotor in either direction;

    said redundant winding being mounted on said stator such that torque summing is achieved from the torques generated by the individual ones of said redundant windings; and

    a separate commutation circuit for each set of redundant windings, said commutation circuits each being connected to a different one of said sets of redundant windings to produce the moving magnetic field from a DC power source for causing rotation of said rotor.

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