According to the characteristics of superheated steam temperature

such as large delay and large inertia

a dynamic predictive PID control algorithm was presented.Through dynamic prediction

this algorithm solves the predictive error of the system delay time

and sends the error signal to the PID controller previously.Then

suffering a delay time

the system's control effect propriately acts on the controlled object

thus the overshoot can be obviously reduced and the regulation process can be speeded up.In addition

this algorithm was applied in simulation test of full-scope simulator of a 600 MW unit

and the dynamic predictive PID control effects was compared with that of the cascade PID control.The results show that

the dynamic predictive PID control algorithm can control the superheated steam temperature be within a safe range

and it has small overshoot

small amount of calculation

simple structure

and is easy to be used in engineering projects.