Method for determining the speed of a synchronous machine, circuit configuration for actuating a synchronous machine, and use of such a configuration

摘要

The invention relates to a method wherein the speed of the rotor of an electronically commutated synchronous machine is determined or controlled by means of one or more rotor position sensors, in particular, three rotor position sensors that are fixed to the stator, and a time measuring device, wherein the angle traveled by the rotor and the time lapsed during the travel are measured, wherein the measured angle traveled by the rotor is corrected by means of one or more first correction constants, in particular a differential for correcting for the influence of non-uniform positioning or expansion of the position marking of the rotor, and a circuit configuration for actuating an electronically commutated synchronous machine.

主权项

1. A method for determining or controlling a speed of a rotor of an electronically commutated synchronous machine having a plurality of position sensors fixed to a stator of the machine and a timing device, the method comprising the steps of:
measuring the angle traversed by rotation of the rotor and the time that has lapsed during the rotation, correcting the measured angle traversed by the rotor by a first correction constant for correcting the influence of nonuniform positioning or expansion of position markers on the rotor which interact with the rotor position sensors, and correcting the angles spanned between the rotor position sensors by a second correction constant for correcting the influence of imprecise positioning of the rotor position sensors.