Motor current signal processor using analog substraction of an estimated largest sine wave component
AssigneeGeneral Electric Company
InventorsAiman A. Abdel-Malek, John E. Hershey, Gerald B. Kliman, Rudolph A. A. Koegl
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Abstract
A signal processing system includes a phase locked loop for locking a largest sine wave phase and frequency element of an incoming analog signal; an amplitude estimator for estimating a maximum amplitude of the incoming signal; a multiplier for multiplying the estimated largest sine wave phase and frequency element by the estimated maximum amplitude to provide an estimated largest sine wave component; and a subtractor for subtracting the estimated largest sine wave component from the incoming signal to provide a diagnostic signal.
Claims11
A signal processing system comprising:
- a phase locked loop for locking a largest sine wave phase and frequency element of an incoming analog signal;
- an amplitude estimator for estimating a maximum amplitude of the incoming signal;
- a multiplier for multiplying the largest sine wave phase and frequency element by the estimated maximum amplitude to provide an estimated largest sine wave component;
- and
- a subtractor for subtracting the estimated largest sine wave component from the incoming signal to provide a diagnostic signal.
A signal processing method comprising the steps of:
- locking a largest sine wave phase and frequency element of an incoming analog signal;
- estimating a maximum amplitude of the incoming signal;
- multiplying the largest sine wave phase and frequency element by the estimated maximum amplitude to provide an estimated largest sine wave component;
- and
- subtracting the estimated largest sine wave component from the incoming signal to provide a diagnostic signal.
Dependencies are inferred from the claim text.