Data processing: measuring – calibrating – or testing – Calibration or correction system – Circuit tuning
Reexamination Certificate
2007-05-08
2007-05-08
Barlow, John (Department: 2863)
Data processing: measuring, calibrating, or testing
Calibration or correction system
Circuit tuning
Reexamination Certificate
active
10874529
ABSTRACT:
One embodiment is a method of calibrating current offsets from a direct current bus current circuit adapted to control a motor including the steps of initializing the direct current bus current circuit, disengaging pulse width modulated signals to the motor, sampling current values at a predetermined sampling rate, averaging the current values over a predetermined number of samples to establish an offset value, and calculating a calibration value that will nullify the offset value in any subsequent processing of current samples. Another embodiment, a method of filtering inaccurate data from a sequential calculation of power values based on repeatedly sampled voltage and current including the steps of establishing a moving window of a predetermined number of power values, calculating an average power over a sequence comprising the predetermined number of power values, calculating an error value for each time, and comparing each error value to a preset value.
REFERENCES:
patent: 5457375 (1995-10-01), Marcinkiewicz et al.
patent: 5495384 (1996-02-01), Wallis et al.
patent: 5619114 (1997-04-01), Blasko
patent: 5780989 (1998-07-01), Matsumoto
patent: 6393918 (2002-05-01), French et al.
patent: 6426602 (2002-07-01), McCann et al.
patent: 6442979 (2002-09-01), Thorn et al.
patent: 6715175 (2004-04-01), Ciancimino et al.
patent: 2001/0052265 (2001-12-01), French et al.
patent: 2004/0097915 (2004-05-01), Refior et al.
patent: 507138 (1992-07-01), None
patent: 0792963 (1997-09-01), None
patent: 0903845 (1999-03-01), None
patent: 02017892 (1990-01-01), None
patent: 2004112959 (2004-04-01), None
Xu Huangsheng
Zhang Zheng
Colligan John F.
Krefman Stephen
Pretlow Demetrius
Rice Robert O.
Whirlpool Corporation
LandOfFree
Method for calibrating current offset and filtering bad data... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for calibrating current offset and filtering bad data..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for calibrating current offset and filtering bad data... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3774482