METHOD AND DEVICE FOR CONTROLLING A POWERTRAIN COMPRISING A CONTINUOUSLY VARIABLE TRANSMISSION

摘要

The invention relates to a method and a device for controlling a powertrain comprising a continuously variable transmission in torque tracking mode. The system in question is a vehicle equipped with a heat engine and a continuously variable transmission operating in torque tracking mode. According to the invention, a non-linear multivariable global model is followed in a determination unit (36) in such a way that a plurality of intermediate variables (v1, v2, v3) are produced for a decoupling unit (35) by means of a regulating unit (34). The measuring signals used represent the speeds and torques of the electrical machines of the electric selector of the continuously variable transmission, and the electrical voltage at the terminals of the energy buffer element of the electric selector. The control signals generated are the nominal signals produced by torques of the electrical machines and the heat engine.