Rotary transformer nulling system
Abstract
Abstract AN APPARATUS INCLUDING A FOLLOW-UP HAVING NO MOVING PARTS FOR PROVIDING AN OUTPUT CORRESPONDING TO THE ANGULAR DISPLACEMENT OF THE ROTOR OF A ROTARY TRANSFORMER, SUCH AS A SYNCHRO OR RESOLVER, COMPRISING A LOGIC NETWORK CONNECTED TO THE ROTOR OF THE ROTARY TRANSFORMER AND RECEIVING ERROR SIGNALS THEREFROM AND PROVIDING AN OUTPUT CORRESPONDING TO THE ANGULAR DISPLACEMENT OF THE ROTOR FROM A PREDETERMINED POSITION, AND THE OUTPUT OF THE LOGIC NETWORK BEING APPLIED TO THE STATOR WINDINGS OF THE ROTARY TRANSFORMER AND ROTATING THE STATOR MAGNETIC FIELD TO NULL THE ERROR SIGNALS FROM THE ROTOR. THE LOGIC NETWORK MAY PROVIDE EITHER AN ANALOG OR DIGITAL OUTPUT CORRESPONDING TO THE ANGULAR DISPLACEMENT OF THE ROTOR.
Inventors
- 👤 Benjamin M Watkins
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |