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METHOD AND SYSTEM FOR ESTIMATING A ROTOR POSITION WITH A NOTCH FILTER

United States Patent Application

20170317633
A1
View the Complete Application at the US Patent & Trademark Office
A motor has a rotor that rotates in response to one or more alternating current input signals. A position sensor is adapted to generate a substantially saw-tooth waveform indicative of a position of the rotor. A primary processing module or data processor is capable of providing position data and speed data for the rotor based on the substantially saw-tooth waveform. A notch filter can reject one or more selected frequency components in the substantially saw-tooth waveform to reduce distortion off the substantially saw-tooth waveform that would otherwise tend to cause inaccuracy in the provided position data and speed data.
Li, Dan (Fargo, ND), Pence, Jacob (Dubuque, IA), Wu, Long (Fargo, ND)
15/ 142,645
April 29, 2016
GOVERNMENT LICENSE RIGHTS [0001] This invention was made with government support under Power America Subaward #14-0654-05, awarded by the Department of Energy. The government has certain rights in the invention.