System constraints method of controlling operations of an electro-mechanical transmission with an addional constraints range

摘要

A method for controlling an electro-mechanical transmission (10) mechanically coupled to first (56) and second (72) electric machines to transmit power to an output member (64) includes determining motor torque constraints and battery power constraints. A preferred output torque to an output member (64) is determined that is achievable within the motor torque constraints, within a range for an additional torque input and based upon the battery power constraints.