Increasing all-wheel drive system calibration efficiency through hardware-in-the-loop simulation techniques

A computer program product, comprising a computer readable storage medium storing computer executable code for generating a torque map operating an all-wheel drive system (“AWD”) of a vehicle, the computer executable code performing the steps of:

• generating a model describing how an all-wheel drive (“AWD”) electronic control unit (“ECU”) included in the vehicle processes data received from one or more vehicle subsystems;
• executing the model on a computing device coupled to the vehicle to emulate operation of the AWD ECU using the computing device;
• capturing data from a controller area network (“CAN”) included in the vehicle;
• capturing data describing wheel torque from one or more wheels of the vehicle;
• generating a raw torque value using the data from the CAN and the data describing wheel torque using the executed model;
• filtering the raw torque value to generate a torque value associated with an engine speed and with an intake air pressure from the data captured from the CAN;
• and
• storing the torque value and associated engine speed and intake air pressure in a computer readable storage medium included in the computing device executing the model.

A system for generating a torque map operating an all-wheel drive system (“AWD”) of a vehicle, the system comprising:

• a controller area network for communicating data from sensors, actuators and one or more subsystems within the vehicle;
• a sensor coupled to a wheel of the vehicle, the sensor capturing data describing a torque associated with the wheel;
• and
• a computing device coupled to the controller area network and to the sensor coupled to the wheel, and receiving data from the controller area network and from the sensor coupled to the wheel, the computing device including computer readable program code stored in a memory and configured to be executed by a processor, the computer readable program code including instructions for:
• emulating operation of an all-wheel drive electronic control unit included in the vehicle by executing a model describing how the all-wheel drive electronic control unit processes data;
• generating, using the executed model, a raw torque value based on the data from the controller area network and from the sensor coupled to the wheel;
• filtering the raw torque value to generate a torque value associated with an engine speed and with an intake air pressure from the data received from the controller area network;
• and
• storing the torque value and associated engine speed and intake air pressure the memory.