Method and apparatus for developing a control architecture for coordinating shift execution and engine torque control

摘要

A method for controlling a powertrain system including a transmission (10) mechanically coupled to an engine (14) and an electric machine (56,72) to transfer power to an output member (64), the transmission (10) selectively operative in one of a plurality of operating range states includes monitoring operator inputs to an accelerator pedal, determining a preferred operating point of the powertrain based upon the operator inputs, determining a preferred operating range state of the transmission (10) based upon the preferred operating point, determining lead control signals for the engine (14) and the transmission (10) based upon the preferred operating point and the preferred operating range state of the transmission (10), determining immediate control signals for the electric machine (56,72) and the transmission, wherein the immediate control signals are based upon a lead period calibrated to a difference in control signal reaction times of the engine (14) and the electric machine (56,72).