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PLURAL ELECTRIC MOTOR CONTROL SYSTEMS

  • US 3,771,032 A
  • Filed: 06/07/1972
  • Issued: 11/06/1973
  • Est. Priority Date: 06/07/1972
  • Status: Expired due to Term
First Claim
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1. An electric motor system, comprising;

  • a first electric motor and a first driven member, said motor comprising first and second independently rotatable rotors, one of which constitutes a motor armature while the other constitutes a casing and field winding, the first of said independently rotatable rotors being connected to drive said first driven member;

    a second electric motor and a second driven member, said second motor comprising third and fourth independently rotatable rotors, one of which constitutes a second motor armature while the other constitutes a second casing and field winding, said third independently rotatable rotor being connected to drive said second driven member;

    intercoupling drive means between said second and fourth independently rotatable rotors through which rotation of one of said second and fourth rotors produces opposite rotation of the other, whereby, the reaction torque on said first motor due to the driving thereby of said first driven member is sustained by the second motor, and vice versa;

    electrical circuitry connecting the armatures and field windings of said first and second motors to a common electrical supply, and including switch means for removing the current supply from the armature of said second motor without interrupting the supply to the first motor, and electrical control means for changing the field current of said second motor.

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