Constant current closed loop controller for rotating system
US4540877A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 1983 |
| Grant date | Sep 10, 1985 |
| Priority date | — |
| Expiry date | Dec 21, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S323/909
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A temperature controller for monitoring the temperature of a rotating heating system and regulating the temperature relative to a desired temperature. A transmitter within the rotating system coupled to a remote stationary controller via slip rings produces a magnitude varying current control signal within a calibrated range at a magnitude proportional to the sensed temperature. A pair of voltage dividers within the transmitter establish the level and range of current magnitude relative to a constant current source. The remote stationary controller compares the current control signal to a set-point and synchronously supplies power to the heater elements of the rotating system, so long as the sensed temperature is below the desired temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.