Fully digital drive system for brushless motor with voltage or c

Details Fully digital drive system for brushless motor with voltage or c Fully digital drive system for brushless motor with voltage or c

1997-05-19

1998-08-11

Masih, Karen

Electricity: motive power systems

Induction motor systems

Primary circuit control

318254, 318138, 318439, 318798, 318815, 318560, 318567, 318569, 388904, H02P 126

Patent

active

057931801

ABSTRACT:
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 the number of switching phases of the motor, in which is divided a complete digitized pre-defined profile. The digital samples are stored in a nonvolatile memory and that are scanned at a continuously regulated clock frequency and with varying order and direction of scanning for reconstructing the instantaneous driving profiles for all the windings.

REFERENCES:
patent: 4409534 (1983-10-01), Bose
patent: 4634952 (1987-01-01), Yoshino et al.
patent: 5272424 (1993-12-01), Lee
patent: 5592058 (1997-01-01), Archer et al.

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