Abstract: In cement production, the input/output model used to describe the static characteristic of raw material mixing system is nonlinear and coupling by interactive variables. Provides a linearizing and decoupling scheme and makes the system linearized and decoupled. It is very significant and convenient for analyzing, designing and implementing the control system. Designs an adaptive decoupling control system based on the improved weighting least squares method, realizes high-accuracy and stronger robustness control. Provides the results of simulation and practical operation and makes a comparison with the conventional adaptive control system.

Key words: decoupling, adaptive decoupling control, mixing control, linearizing