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AC drive system for electrically operated vehicle

CAFC
  • US 7,332,881 B2
  • Filed: 10/27/2005
  • Issued: 02/19/2008
  • Est. Priority Date: 10/28/2004
  • Status: Active Grant
First Claim
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1. A drive system for a vehicle, comprising:

  • a motor for providing a drive torque;

    an electrically actuated brake for providing a braking torque to the motor; and

    a controller that receives a battery voltage input, a throttle pedal position input, a brake pedal position input, a key switch input, a forward/neutral/reverse (FNR) input, and a brake full-stroke input in addition to the brake pedal position input, the controller generating a drive signal for the motor based on the inputs;

    wherein the controller sends a signal to the electrically actuated brake based on the brake pedal position input and the brake full-stroke input, and the drive signal includes at least one of a pulse width modulation signal and a pulse frequency modulation signal.

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