| 摘要 |
An adaptive expert control system (10) includes a computer for monitoring, diagnosing and controlling the operation of a recausticizing system in real-time. The adaptive control system includes a plurality of sensors disposed throughout the recausticizing system that provide monitoring signals to the computer representative of various parameters of the recausticizing process, such as dreg level, liquor turbidity, liquor conductivity and liquor temperature. The control system actuates one or more control devices; such as an underflow controller of a clarifying tank, a flocculant feeder (55), lime flow controller, weak wash flow controller, and a heater/cooler of the liquor; in response to the monitoring signals and at least one model process stored in the computer. The model process is based on one or more artificial tools including fuzzy logic, neural networks, genetic algorithms and expert rule bases. The computer executes a set of object-oriented instructions having intelligent software objects configured in a constrained hierarchy. The adaptive expert control system preferably controls the operation of the entire system, but may individually control each of its subsystems, namely the green liquor clarifier subsystem, the white liquor causticizer subsystem and the lime mud filtration subsystem. |
