Road load compensation for matching acceleration expectation

A method for adjusting a torque of a vehicle to compensate for changes in road load, the method comprising:

• measuring a speed and acceleration of the vehicle;
• measuring an accelerator pedal position of the vehicle;
• controlling a throttle of the vehicle based on the measured accelerator pedal position and a throttle mapping that relates the accelerator pedal position to a throttle position, wherein the throttle position is correlated to a motor power;
• controlling a transmission of the vehicle to shift in a shift direction from one fixed transmission gear to a selected fixed transmission gear based on a shift mapping that relates a desired transmission gear to the measured speed of the vehicle and the measured accelerator pedal position, wherein each transmission gear relates the motor power to a vehicle torque;
• modifying the throttle mapping in real time based on sensor data relating to a road load of the vehicle;
• and
• modifying the shift mapping in real time based on the sensor data,
• such that the vehicle torque is altered to a desired torque value based on the road load of the vehicle.

An acceleration compensation apparatus comprising:

• a memory comprising:
• a real-time throttle map relating an accelerator pedal position of a vehicle to a throttle position of the vehicle, such that a given accelerator pedal position directs a corresponding throttle position, wherein a motor power of the vehicle is correlated with the throttle position;
• a real-time shift map relating a desired transmission gear to a current shift direction, vehicle speed, and throttle position, such that a given vehicle speed, throttle position, shift direction and transmission gear directs a corresponding transmission gear, wherein a torque of the vehicle is correlated with the motor power and the transmission gear;
• one or more sensors disposed within the vehicle and configured to provide real-time sensor data relating to a road load of the vehicle;
• and
• a processor which, in response to the real-time sensor data, updates the real-time throttle map and real-time shift map such that the torque of the vehicle is altered to a desired torque value based on the road load of the vehicle.