Plant control apparatus, plant control method, and non-transitory computer-readable recording medium

摘要

In accordance with an embodiment, a plant control apparatus includes a deviation calculation unit, a velocity-type PID calculation unit, a plurality of integral calculation units, a plurality of overwrite units, and an automatic balance unit. The deviation calculation unit calculates a deviation between a process value from a plant with operation terminals and a set value corresponding to a control object, and generates a deviation signal. The velocity-type PID calculation unit generates a velocity-type operation amount command signal corresponding to the deviation. The integral calculation units generate position command signals as defined operation terminal position command signals. The overwrite units generate additional position command signals to perform overwrite processing and newly define operation terminal position command signals. The automatic balance unit calculates a deviation between the defined operation terminal position command signals, corrects the operation amount command signal and supplies the corrected operation amount command signal.

主权项

1. A plant control apparatus comprising:
a deviation calculation processor programmed to calculate a deviation between a process value supplied from a plant to be controlled and a set value corresponding to a control object, and to generate a deviation signal, the plant comprising a plurality of operation terminals; a velocity-type PID calculation processor programmed to perform a PID calculation on receipt of the deviation signal from the deviation calculation processor, and to generate a velocity-type PID operation amount command signal corresponding to the deviation; a plurality of integral calculation processors provided in association with the number of the operation terminals and programmed to generate position command signals for the respective operation terminals as defined operation terminal position command signals in accordance with the operation amount command signal; a plurality of overwrite processors provided to respectively correspond to the integral calculation processors and programmed to generate additional position command signals for the respective operation terminals, to perform overwrite processing for the corresponding integral calculation processors and to newly define operation terminal position command signals; and an automatic balance processor programmed to be supplied with the velocity-type PID operation amount command signal from the velocity-type PID calculation processor, to be supplied with the defined operation terminal position command signals from the respective integral calculation processors, to compare the defined operation terminal position command signals, each corresponding to the respective operation terminals, with one another, to calculate a deviation between the defined operation terminal position command signals when the defined operation terminal position command signals are not equal to each other, to correct the operation amount command signal in accordance with a result of the calculation, and to supply the corrected operation amount command signal to the corresponding integral calculation processors.