Motor current signal processor using analog substraction of an estimated largest sine wave component
US5550880A · kind A · utility
7Cited by
3References
11Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 30, 1995 |
| Grant date | Aug 27, 1996 |
| Priority date | — |
| Expiry date | Aug 30, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P23/183
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.