Applied research of expert control in papermaking control

ABSTRACT

The paper industry of the high efficiency, high integration of modern paper production

requirements of more and more is also high, the traditional mode of production has slowly

can't follow up the situation needs. In the process of making paper pulp concentration as the

most important physical quantity of paper making, one of the quality plays a decisive role. So

for pulp concentration control research has multiple significance.

The current paper industry concentration control widespread use of the traditional PID

algorithm, PID algorithm of simple structure, easy to realize, strong adaptability and other

characteristics, but the concentration of the application in circuit there are still some problems,

such as adjusting the slow, weak anti-interference ability, poor stability. Some problems are

limited the pulp concentration control accuracy, the more become paper to further improve the

quality of a bottleneck.

This paper pulp and paper production craft, analysis the pulp and paper pulp

concentration control process characteristic, found that the traditional PID control for pulp

concentration control inner link to be involved hard. Based on this put forward the thought of

expert control pulp concentration control regulation. This design through the analysis

concentration control relationship, establish related model, and according to the control

algorithm with established single loop and multi-loop concentration control expert control

scheme. By comparison study found that the application of expert control in pulp

concentration control to improve adjust speed, enhance the system robustness and important

optimization function.

In the theoretical model, with the support of this paper single loop concentration control

traditional scheme and experts plan, many concentration concentration control traditional

scheme and experts plan for system simulation. Established in Matlab in the simulation results

of the curve is proof enough expert PID control compared with the traditional PID control in

improving the system response speed and robustness advantages.

KEY WORDS: expert control, pulp concentration, many circuit, PID