Study And Application On The Control System Of 410T/H Circulating Fluidized Bed Boiler

Circulating fluidized bed boiler (CFBB) control strategies based on classical control theory or modern control theory all need exact mathematical models of controlled objects. It is very difficult to establish the exact mathematical models of controlled objects because the combustion system of circulating fluidized bed boiler is an object that has many features: distributed parameters, nonlinear, time-varying and a lot of tightly coupled variables. This text passes the analytical research CFBB combustion system characteristic, designed and simulated fuzzy control system, the results indicate that the control quality, the speediness, the robustness are all superior to the general PID control system. Pressing to be control to the bed temperature and the main steam pressure of the object, designed the fuzzy cascade control system , solve the solution relational control that a certain meaning spoke to carry out the bed and the main steam pressure.