Brushless printed circuit resolver
US4092579A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 15, 1976 |
| Grant date | May 30, 1978 |
| Priority date | — |
| Expiry date | Dec 15, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/2412
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A brushless printed circuit resolver for converting a shaft angular position to a voltage signal, defined by the envelope of a carrier, which indicates the mechanical angle. The brushless resolver includes a stationary member having two conducting foils formed thereon which are capactively coupled to associated foils on a movable member. The capacitive coupling between these input foils remains constant as the movable member is moved. A pair of output foils are also disposed on a movable member and each is electrically connected to one of the movable input foils. A pair of shaped stationary output foils are mounted with a small separation from the movable output foils so that the capacitive coupling between the movable and stationary output foils varies as a determinable function. To get the desired output it is necessary that the movable output foils and the stationary output foils be relatively shaped so that capacitive coupling between the movable and the stationary output foils vary as the desired function. There can be two pairs of movable output foils, disposed in a quadrature relationship, which provides an output signal giving an unambiguous indication of shaft position. By…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.