基于自抗扰技术的风扇磨直吹锅炉主汽压力控制系统的研究

Research on the system of automatic governing of main steam pressure based on auto disturbance rejection controller in fan mill of unit pulverized coal system

文章针对由于被控对象的时变和非线性特性给风扇磨直吹式锅炉主汽压力自动调节带来的控制品质恶化问题,采用了自抗扰控制(ADRC)策略,这种控制算法只需被控对象的输入输出信息就能很好的估计出系统的实时内外扰动总和,并将其加以补偿,该控制器具有结构简单、响应快、鲁棒性强等优点,仿真表明这种控制器能有效改善该类系统的控制品质。

Auto-disturbance rejection controller(ADRC) is adopted according to analyzing the problems of automatic governing of main steam pressure of boiler brought by time-varying and non-linear characters of model of controlled process in this paper.this algorithm can estimate the real time exterior and interior disturbance and compensate it.This controller has simple structure,fast response and strong robustness, the simulation has shown that the controller can effectively improve control performance of system.