Patent ID: 7263432
Filing Date: 2007-08-28
Classification: F02D,F02N,G01D

Abstract:
1. A method of detecting an angular position of a rotor of an electrical machine which is coupled in rotation without slip to an internal combustion engine that is fitted with a sensor delivering a first signal representative of the angular position of the engine at speeds of rotation that are greater than a minimum measurement speed, wherein on a basis of at least one characteristic of the electrical machine, a second signal is generated that is representative of an estimated angular rotor position for the electrical machine for speeds of rotation that are less than a maximum estimation speed, said estimation speed being equal to or greater than the minimum measurement speed; as a function of an estimated speed of rotation, there is delivered to a control circuit configured to control the electrical machine, a changeover from the second signal to the first signal, and vice versa, is performed at an estimated speed of rotation lying between the first threshold and the second threshold.