Method and apparatus to control a multi-mode powertrain system

摘要

A method for controlling a powertrain system includes determining minimum and maximum states for an object component of interest based upon a plurality of linear constraints that are associated with operating parameters for the torque machines and the multi-mode transmission. Minimum and maximum objective battery powers are determined based upon the minimum and maximum states for the object component of interest. When the minimum and maximum objective battery powers are outside the minimum and maximum battery power limits, a problem recomposition process is executed to recompose the minimum and maximum battery power limits and the linear constraints. Recomposed minimum and maximum states for the object component of interest are determined based upon the recomposed minimum and maximum battery power limits and the recomposed linear constraints. The recomposed minimum and maximum states for the object component of interest are employed to control the powertrain system.

主权项

1. A method for controlling a powertrain system comprising an internal combustion engine and a multi-mode transmission including a plurality of torque machines, the method comprising:
determining, by a controller, minimum and maximum states for an object component of interest based upon a plurality of linear constraints, said linear constraints associated with operating parameters for the torque machines and the multi-mode transmission; determining minimum and maximum objective battery powers based upon the minimum and maximum states for the object component of interest; when the minimum and maximum objective battery powers are within minimum and maximum battery power limits,
employing the minimum and maximum states for the object component of interest to control the powertrain system; and when the minimum and maximum objective battery powers are outside the minimum and maximum battery power limits,
executing a problem recomposition process to recompose the minimum and maximum battery power limits and the plurality of linear constraints,determining recomposed minimum and maximum states for the object component of interest based upon the recomposed minimum and maximum battery power limits and the recomposed linear constraints, andemploying the recomposed minimum and maximum states for the object component of interest to control the powertrain system.