Modeling and analysis of superheated steam temperature control system based on least-squares algorithm with gradual reducing memory

In allusion to the NO.2 600MW subcritical boiler superheated steam temperature system of a power plant in Anhui province, a modeling and analysis method based on least-squares algorithm with gradual reducing memory is proposed for superheated steam temperature control system. By using ActiveX technology and GUI graphical interface in the condition of unobvious disturbance, the boiler advanced control software platform has been developed by our lab to do control simulation of the superheated steam temperature model. Simulation results and engineering applications have simplified good generalization ability, high identification precision, and satisfied tracking performance. The method presented in this paper is suit for online identification and system modeling of boiler steam temperature systems.