2自由度PID控制器在铝电解过程中的应用  

Application of Two-Freedom PID Controller in Aluminum Electrolysis Process

作　　者：李界家[1] 周悦[1] 李旸[1] 

机构地区：[1]沈阳建筑大学信息与控制工程学院,辽宁沈阳110168

出　　处：《沈阳建筑大学学报（自然科学版）》2005年第2期150-153,共4页Journal of Shenyang Jianzhu University：Natural Science

基　　金：建设部基金项目(03-2-117)

摘　　要：目的通过设计前馈2自由度PID控制器,解决目前铝电解定时间歇控制方式的控制精度低、实时性差等问题.方法设计了一种超调小、动态响应快、抗干扰能力强的前馈2自由度自校正PID控制器,该控制器采用前馈控制系统结构,确定干扰抑制性能最佳参数和跟踪特性最佳的前馈参数,并进行了参数优化.结果前馈2自由度PID控制器改善了系统的干扰抑制特性和跟踪特性,使系统的动态响应速度和稳态精度明显提高.结论该控制器在铝厂应用,改善了控制性能,使电解槽达到最佳的工作状态,提高了电流效率和铝的产量及质量,经济效益显著,具有较大的工业推广价值.To solve the problem of low control accuracy and weak real-time performance in regular intermission control mode in aluminum electrolysis, feedforward two-freedom PID controller has been designed. Feedforward two-freedom self-turning PID controller with small excessive adjustment, rapid dynamic response and antijamming capability have been designed. The controller adopts feedforward control system structure, fixes on antijamming optimum parameter and tracking feature optimum feedforward parameter, and optimizes system parameter. It has improved control effect. In conclusion, the controller has been adopted in aluminum plant and has gained prominent control effect. It has improved control performance, made reduction cell working in the optimum states, raised current efficiency, increased the quantity and quality of aluminum and got prominent economical-benefit.

关 键 词：2自由度 铝电解过程 应用 自校正PID控制器 控制系统结构 动态响应速度 跟踪特性 抗干扰能力 控制精度 控制方式 最佳参数 抑制性能 参数优化 干扰抑制 稳态精度 控制性能 工作状态 电流效率 效益显著 推广价值 前馈 实时性 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] TF821[自动化与计算机技术—控制科学与工程]