Based on optimal feedback control principle

a strategy of optimal feedback control for main steam temperature has been put forward to optimize and resolve the state feedback matrix

realizing rapid and stable followup to setted value of steam temperature by using desuperheating water quantity as little as possible. At the same time

the DID control can be eliminated

and the control system may be simplified. Besides

in order to overcome the steadystate deviation

an improved and simplified method

namely addition of steadystate deviation discriminator and BP network corrector into the optimal feedback strategy for main steam temperature

has been given. Simulation shows that the said method has good effectivenees.