Apparatus and method for compensating for noise in signals
US5581488A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 20, 1994 |
| Grant date | Dec 3, 1996 |
| Priority date | — |
| Expiry date | Apr 20, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08C19/46
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Signal compensation apparatus and method compensates for and removes errors due to error factors included in source signals x and y approximated by the sine function and cosine function, respectively, from a measurement apparatus such as a resolver or an encoder. Compensation is achieved by approximating the source signals x and y as expressions which include the terms due to the error factors, detecting the maximum values of x, x+y, etc., and determining coefficients corresponding to the error factors on the basis of the relationships between the maximum values and the coefficients, and removing the errors from the signals provided by the measurement apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.