The invention relates to a vehicle electric drive system. There is a need
for a brake responsive vehicle electric drive system. A vehicle electric
drive system includes an internal combustion engine, an electric
motor/generator driven by the engine, and drive wheels driven by a
traction motor/generator. The motor/generators are controlled by a
control system which receives signals from an operator speed control
member, wheel speed sensors, and a pair of brake pedal position sensors,
each connected to a corresponding left or right brake pedal. In response
to operation of the brake pedals, the controller coordinates operation of
the electric drive system with operation of the brake pedals.