SYSTEM AND METHOD FOR CONTROL OF LIQUID LEVEL IN DEAERATOR BASED ON CONTROL OF TIME SEQUENCE AND CALCULATION OF INVERSE FUNCTION Russian patent published in 2023 - IPC G05D9/12 G05B11/32 G05B7/02 G01F23/00 

FIELD: valves.

SUBSTANCE: group of inventions relates to a system for control of a liquid level in a deaerator and its operation method. The system includes PI regulator, a manual regulator manipulator, manual valve manipulators with large and small flow rate, a common unit for distributing commands for a valve position, a unit for calculating undisturbed tracking, and a unit for determining a valve operating mode. Tracking contacts of the manual valve manipulator with a small flow rate, the manual regulator manipulator, the manual valve manipulator with a large flow rate, and PI regulator and contacts for switching logic of their control to an automatic mode call corresponding signals from a unit for controlling a time sequence of tracking mode launching and switching to an automatic mode and signals from the unit for calculating an undisturbed tracking value, thus, reconfiguration allows for undisturbed switching, implementation of separate switching of the manual regulator manipulator and the manual valve manipulator, when switching them in an automatic mode, which provides an increase in applicability of a control method and flexibility of operation implementation.

EFFECT: provision of undisturbed switching between a manual regulator manipulator and a manual valve manipulator.

12 cl, 7 dwg