A practicable control system with hierarchical structure

The system, which adopts barometric pressure as controlled measure, is a nonlinear and variable delay-time system. To conform such a system's model and optimum answer is very difficult. The paper proposes an intelligent hierarchical method based on the knowledge/reasoning regulation, according to the control demand. It is, guided with the knowledge base, to realize a practical scheme and operation by distributing the performance parameter gradually. The system described has outstanding stability, and flexible and convenient control performance.