Research and application of the mixed control for coke oven collector pressure control systems

According to the characteristics of nonlinear, close coupling and multiple loops for coke oven collector pressure control systems, a new mixed control method is proposed. Using the variable integral PI control combing with uncoupling control based on relativity analysis, it solved the problem of collector pressure stability control for several coke oven with close coupling characteristics. The algorithm is proved to be useful and dependable in actual system.