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Optimizing system for vehicle traction motors

  • US 5,264,763 A
  • Filed: 10/29/1992
  • Issued: 11/23/1993
  • Est. Priority Date: 10/29/1992
  • Status: Expired due to Fees
First Claim
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1. Apparatus for optimizing control of a dc motor of a vehicle having a driven wheel, said dc motor having separately excited armature and field windings, the apparatus comprising:

  • a) a motor having an armature, an armature winding and a field winding, said windings being independently controlled;

    b) armature voltage amplifying means operatively connected to the armature of said motor for varying voltage applied thereto;

    c) armature current sensing means operatively connected to said armature voltage amplifying means for sensing armature current;

    d) field current amplifying means operatively connected to the field winding of said motor for varying current applied thereto;

    e) field current sensing means operatively connected to said field current amplifying means for sensing field current;

    f) speed sensing means positioned remote from the armature for generating a signal representative of the actual rotation speed of said driven wheel;

    g) means for providing a first reference signal proportional to actual wheel speed;

    h) means for providing a second reference signal proportional to actual armature current;

    i) means for providing a third reference signal proportional to desired field current; and

    j) optimizing control means for optimizing energy efficiency, the optimizing control means receiving said first and second reference signals, and for generating said third reference signal, said optimizing control means being operatively connected to said armature voltage amplifying means and to said field current amplifying means for controlling respective operations thereof.

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