Propulsion system control with mpc

A motor vehicle propulsion control system for a motor vehicle having a transmission and an engine, the motor vehicle propulsion control system comprising:

• a prediction module configured to generate a first predicted actual axle torque and a first predicted actual fuel consumption rate based on a first set of possible command values, the first set of possible command values including a first commanded engine output torque and a first commanded transmission ratio, the prediction module being further configured to generate a second predicted actual axle torque and a second predicted actual fuel consumption rate based on a second set of possible command values, the second set of possible command values including a second commanded engine output torque and a second commanded transmission ratio;
• a cost module configured to:
• determine a first cost for the first set of possible command values based on a first predetermined weighting value, a second predetermined weighting value, the first predicted actual axle torque, the first predicted actual fuel consumption rate, an axle torque requested, an engine output torque requested, a transmission ratio requested, and a fuel consumption rate requested;
• and
• determine a second cost for the second set of possible command values based on the first predetermined weighting value, the second predetermined weighting value, the second predicted actual axle torque, the second predicted actual fuel consumption rate, the axle torque requested, the engine output torque requested, the transmission ratio requested, and the fuel consumption rate requested;
• and
• a selection module configured to select one of the first and second sets of possible command values based on the lower of the first and second costs and set desired command values based on the possible command values of the selected one of the first and second sets.

A propulsion system for a motor vehicle, comprising:

• an engine operable to power the motor vehicle, the engine having an engine output shaft configured to transfer engine output torque;
• a continuously variable transmission having a variator assembly including a first pulley and a second pulley, the first and second pulleys being rotatably coupled by a rotatable member, at least one of the first and second pulleys including a movable sheave translatable along an axis to selectively change a gear ratio between the engine output shaft and a transmission output shaft;
• a drive axle configured to be driven via the transmission output shaft, the drive axle being configured to output axle torque to a set of wheels;
• and
• a control system comprising:
• a prediction module configured to generate a first predicted actual axle torque and a first predicted actual fuel consumption rate based on a first set of possible command values, the first set of possible command values including a first commanded engine output torque and a first commanded transmission ratio, the prediction module being further configured to generate a second predicted actual axle torque and a second predicted actual fuel consumption rate based on a second set of possible command values, the second set of possible command values including a second commanded engine output torque and a second commanded transmission ratio;
• a cost module configured to:
• determine a first cost for the first set of possible command values based on a first predetermined weighting value, a second predetermined weighting value, the first predicted actual axle torque, the first predicted actual fuel consumption rate, an axle torque requested, an engine output torque requested, a transmission ratio requested, and a fuel consumption rate requested;
• and
• determine a second cost for the second set of possible command values based on the first predetermined weighting value, the second predetermined weighting value, the second predicted actual axle torque, the second predicted actual fuel consumption rate, the axle torque requested, the engine output torque requested, the transmission ratio requested, and the fuel consumption rate requested;
• and
• a selection module configured to select one of the first and second sets of possible command values based on the lower of the first and second costs and set desired command values based on the possible command values of the selected one of the first and second sets.