Solid state translator
US3984672A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 5, 1974 |
| Grant date | Oct 5, 1976 |
| Priority date | — |
| Expiry date | Dec 5, 1994 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/1047
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A transducer for combining an analog signal input and a digital signal input and providing an analog signal output, equal to the sum or difference, wherein the digital input signal is divided into a first component, for which a very accurate analog equivalent is provided and a second component for which a good approximate analog equivalent is provided. The translator is usually used in conjunction with a resolver which provides analog inputs in suppressed carrier trigonometric form. The translator performs certain trigonometric manipulations on the inputs from the resolver and the analog equivalents of the digital angle in order to obtain a signal proportional to the difference between the sensor resolver position and the digital angle command position. The first component of the digital angle, for which very precise analog equivalents are provided, uses a minimum number of high precision resistors. The outputs of the resolver are obtained, with appropriate sign changes when necessary, so that a few reference signals from high precision resistors can be used to determine the analog equivalent of the digital angle in one quadrant and by combining with the resolver outputs of the app…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.