The Application Of Dynamic Matrix Control To Thermal Engineering Process Control System In Fossil Power Plants

Dynamic matrix control(DMC) can directly treat with objects with pure delay, has strong adaptability to large inertia, approved tracking performance and better robustness, but primary steam temperature object and boiler fuel regulating object are both intricate objects with large inertia and time delay, which are difficult to obtain perfect control effect using routine PID cascade control. Therefore, combining single-variable DMC with cascade control can form DMC-PID cascade control, which can retain structure characteristic of cascade control as well as performance virtue of predictive control. When this control strategy is applied into primary steam temperature and boiler fuel regulating systems, benign control effect can be obtained. As an optimizing control algorithm, DMC's virtue is more embodied in multi-variable systems. Multi-variable DMC algorithm has strong adaptability to coupling as well as to inertia and time delay, so it's applied into unit load control system and shows strong robustness. Huang Cheng-jing(Control Theory and Control Engineering)Directed by Associate Prof. Liu Hong-jun...