Volldigitalsteuerungssystem für einen bürstenlosen Motor mit aus einem Digitalspeicher gelesenen Spannungs- bzw. Stromprofil

摘要

Pre-defined driving profiles for the distinct phase-windings of an electronically controlled brushless motor, are continuously reconstructed for each switching phase and forced in the form of a drive current or voltage on the respective windings, in synchronism with a signal indicative of the rotor position, from just a first complete sequence and at least a first sample of the successive sequence of a number of sequences, each of N samples, equal to number of switching phases of the motor, in which is divided a complete digital pre-defined profile. The digital samples are stored in a nonvolatile memory (M1) and are scanned at a continuously regulated clock frequency and with varying order and direction of scan for reconstructing the instantaneous driving profiles for all the windings.