摘要
聚丙烯生产过程受内部放热反应及入料温度等影响,具有时滞、大惯性和动态不确定的特点,基于离散自抗扰控制技术(ADRC-Active Disturbance Rejection Control),通过参数整定跟踪微分器和扩张状态观测器,合理安排过渡过程并估计扰动,利用误差信号设计非线性反馈控制律,以实现聚丙烯反应釜的温度控制。最后借助MPCE实验装置,采用SIMATIC PCS 7控制器进行温度控制及干扰和变负荷实验,不同工况下的实验结果表明该方法具有很好的适应性和鲁棒性,且同等工况下的动态性能优于传统PID控制方法。
Affected by the internal exothermic reaction and the entrance temperature, etc, the polypropylene production process has the characteristics of time delay and strong inertial, based on discrete auto disturbance rejection control, this paper use tracking differenti ator and extended state observer to arrange the transition process and estimate system disturbance rationally, then design a non linear error feedback control law by the error signal, realize the temperature control of polypropylene reaction axe. At last with the MPCE ex periment device and SIMATIC PCS 7 controller, temperature control experiment under disturbance or variable load is studied, the re suits show system with ADRC ensures very good robustness and adaptability under different conditions, and has better dynamic perform ance than classic PID in the same operation conditions.
出处
《控制工程》
CSCD
北大核心
2013年第6期1042-1044,1051,共4页
Control Engineering of China
基金
国家自然科学基金(61273070)
国家自然科学青年基金(61203092)
中央高校基本科研业务费专项资金资助(JUSRP111A47)
关键词
自抗扰控制
聚丙烯
温度控制
PCS7
active disturbance rejection control
polypropylene
temperature control
PCS7
