Method for determining the angular position of a rotor

Data processing: measuring – calibrating – or testing – Measurement system – Orientation or position

Reexamination Certificate

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Details

C702S150000, C318S721000, C318S823000

Reexamination Certificate

active

07103498

ABSTRACT:
According to the invention, in a method for determining the angular position of a rotor, a reference voltage is set in a calibration phase, such that when the rotor, rotating at a calibration speed, passes through a particular detection position, said voltage is the same as the electromotive force induced in the one winding coil. In a subsequent measuring phase the reference voltage is updated to a value (UR) which is equal to the product of the voltage value set in the calibration phase and the ratio of the instantaneous motor rotational speed to the calibration rotational speed. The angular position of the rotor (ω1) at which the electromotive force corresponds to the updated reference voltage is thus identified as the detection position.

REFERENCES:
patent: 4843580 (1989-06-01), Ridoux et al.
patent: 5023527 (1991-06-01), Erdman et al.
patent: 5969491 (1999-10-01), Viti et al.
patent: 6046554 (2000-04-01), Becerra
patent: 0647014 (1995-04-01), None
patent: 09009676 (1997-01-01), None
patent: 11146685 (1999-05-01), None
patent: 2001008489 (2001-01-01), None

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