Patent ID: 8008878
Filing Date: 2011-08-30
Classification: H02P

Abstract:
1. Procedure for determining the electrical drive speed (ω ef ) or position (φ e ) in a permanent magnet rotor of a brushless electrical linear or rotation machine from a measurement of a multi-phase stator current (i 1 ,i 2 ) especially for an electrical drive regulation circuit, a) whereby the speed is seamlessly determined over the entire speed range, including standstill of the rotor, b) while using a mathematical rotor model ( c) and while using an injection procedure ( d) and with a fusion of the model and injection speed values ( e) whereby corresponding with the increase in estimated drive speed (ω characterized in that f) for weakening, the injection speed values ( g) and the weighted injection speed values are fused with the model speed values ( h) and the combined result from the combination element is used as the estimated drive speed (ω