Apparatus and method for generating two-phase signals for use with a resolver to digital converter
US4794511A · kind A · utility
16Cited by
7References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 11, 1988 |
| Grant date | Dec 27, 1988 |
| Priority date | — |
| Expiry date | Jan 11, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K24/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Two-phase voltage signals for use with a resolver-to-digital converter (RDC) are produced as a periodic function of permeance developed across an air gap between a rotor and stator wherein the permeance varies as a periodic sinusoidal function which can be related to the electrical angle of the position of the rotor. The two-phase voltage signals are developed as a function of inductive reactance and follow the form ##EQU1## wherein the phase angle between V.sub.x and V.sub.y is exactly 90.degree. and the term [A+A.sub.n +B+B.sub.n ] is completely free of second harmonics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.