精馏过程提馏段温度的前馈和免疫PID-P串级控制研究  

Research of feed-forward and immune PID-P cascade control for rectifier temperature

作　　者：周国雄[1] 吴舒辞[1] 周健[2] 晏密英[3] 蒋辉平[4] 

机构地区：[1]中南林业科技大学电子与信息工程学院,湖南长沙410004 [2]中南林业科技大学机电学院,湖南长沙410004 [3]中南大学信息科学与工程学院,湖南长沙410083 [4]湖南科技学院电子工程与物理系,湖南永州425006

出　　处：《电子技术应用》2010年第1期124-127,共4页Application of Electronic Technique

基　　金：湖南省自然科学基金资助项目(编号:02JJY203)

摘　　要：借鉴生物免疫反馈响应过程的调节规律,针对精馏过程内部机理复杂、参数动态变化的特点,提出一种前馈补偿和免疫PID-P串级控制方法。内环采用P控制器以快速消除再沸器蒸汽压力不稳定波动,外环采用免疫PID控制器以保证提馏段温度稳定在给定值,同时前馈控制器用于克服外界不可控干扰。结果表明,该控制策略优于常规控制,具有较强的鲁棒性和抗干扰能力。In view of the distilling progress which is complex and the process parameters change dynamically, feed-forward and immune PID-P cascade control method is presented which uses the regulating rules in feedback response process of biological immune systems. In which P controller is used in the inner loop to quickly eliminate instability fluctuations of reboiler steam pressure, immune PID controller is used in the outer loop to keep the temperature at the set point, and feed-forward is used to eliminate the uncontrolled turbulence. Running results show that this control strategy is superior to the traditional control method and has strong robustness and anti-disturbance ability.

关 键 词：精馏塔 温度 免疫PID 串级控制 前馈控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]