Adjustment of loop-powered pneumatic process control device interfaces
US10754362B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2019 |
| Grant date | Aug 25, 2020 |
| Priority date | — |
| Expiry date | Feb 20, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B19/0426
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Adjustment of loop-powered pneumatic process control device interfaces is disclosed. A disclosed example interface for use with a pneumatic process control device includes a power input to scavenge power from a loop power control signal associated with the process control system, a movement controller to cause movement of an actuator powered by the loop power, where the actuator is operatively coupled to a movable control input associated with the process control device, and a calibrator to read position feedback of the actuator during the movement to calculate a positional error, where the calibrator is to adjust a set point of the loop power control signal based on the positional error to control the actuator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.