基于系统辨识的汽包水位自适应控制

针对汽包锅炉给水过程的特点,采用了一种带在线辨识的自适应P ID控制器。利用递推最小二乘法循环调整P ID参数,并将该控制器应用于锅炉汽包水位三冲量控制系统。MATLAB仿真研究表明,与传统的P ID算法比较,该控制方案表现出了良好的动、静态性能,并能适应被控制对象参数的变化,具有较强的鲁棒性和自适应能力。

Drum-level adaptive control based on system identification

According to the characteristics of feedwater process of the drum boiler,an adaptive PID controller with process identification was introduced.Recursive least square method was used to adjust the parameters of the PID controller,which was applied in three-element control system of boiler drum level.MATLAB simulation showed that,compared to the conventional PID algorithm,the proposed control scheme had good dynamic and static performances and could adapt itself to the change of plant parameters,thus proving its strong robustness and adaptation.