Device applicable to direction finding for measuring the relative orientation of two bodies
US4396885A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 3, 1980 |
| Grant date | Aug 2, 1983 |
| Priority date | — |
| Expiry date | Jun 3, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B7/004
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A magnetic coupling device in which two assemblies of three coils are attached respectively to two mechanically independent bodies and form a radiator assembly and a sensor assembly. Each assembly defines a cartesian coordinate frame and is associated with a switching circuit controlled so that the radiator coils are excited successively and separately by the same alternating-current wave and so that the sensor coils are connected separately and successively to processing circuits during each excitation stage of a radiator coil. The processing circuits comprise a synchronous demodulator, a coherent integrator and a control loop for reducing the induced signal received to zero and measuring the corresponding field component. This measurement is performed by an ancillary computer which determines the Euler angles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.