Synchrotransmission system controlled by Hall effect
US4084118A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 22, 1976 |
| Grant date | Apr 11, 1978 |
| Priority date | — |
| Expiry date | Jun 22, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P5/56
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A system for the synhchrotransmission of angular position data between two rotating shafts, using, as the transmitter and receiver, two two-phase Hall effect motors, of which each rotor 2, 52 has a permanent magnet and each stator is formed by two windings 54,54, 73,74, and two Hall effect magnetic sensors 3,4, 23,24, arranged in pairs at a right angle. The electrical signals created by the sensors of the transmitter and the receiver are introduced into comparator circuits 19,29 so as to produce, in the event of angular position differences between the rotors, an error signal which after amplification 40, 41 is applied to the windings 53,54 of the receiver, thus eliminating the position difference by the creation of a torque.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.