Electricity: motive power systems – Synchronous motor systems – Brushless motor closed-loop control
Reexamination Certificate
2007-01-17
2009-08-25
Ro, Bentsu (Department: 2837)
Electricity: motive power systems
Synchronous motor systems
Brushless motor closed-loop control
C318S400010
Reexamination Certificate
active
07579799
ABSTRACT:
Methods and devices for determining the position and/or angular orientation of a rotating shaft. Exemplary features include a sensor module and a position determination module. Sensor module may include a plurality of Hall Effect devices (HEDs) arranged at a specified angular separation to produce a signal in response to rotation of the shaft. Position module may be responsive to sensor module to produce a converted signal, determine an error term, and produce a position estimate. Converted signal may be produced by processing the HED signals into sinusoidal reference signals having offset scale and amplitude scale factors. Error term may be determined by processing the converted signals to produce an estimated position signal. Position estimate may be produced by processing the error term. Refined position measurement may be achieved by iterative elimination of regressive differences between position estimates with minimization of absolute magnitude of error term.
REFERENCES:
patent: 5352962 (1994-10-01), Galburt
patent: 5659230 (1997-08-01), Fukuoka
patent: 5723957 (1998-03-01), Ishikawa
patent: 6084376 (2000-07-01), Piedl et al.
patent: 6693422 (2004-02-01), Lutz
patent: 6744230 (2004-06-01), Hill et al.
patent: 6806669 (2004-10-01), Griesemer et al.
patent: 6931918 (2005-08-01), Herb
patent: 2004/0080290 (2004-04-01), Hill et al.
patent: 2005/0248306 (2005-11-01), Chen et al.
Bugge John F.
De Lair Charles
Lafontaine Eric M.
Robichaux Jerry D.
Ingrassia Fisher & Lorenz P.C.
Raytheon Company
Ro Bentsu
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