基于NLJ方法的PID控制参数寻优自整定

Optimized PID Parameter Tuning Using NLJ Method

在运用递推最小二乘法在线辨识系统模型参数的基础上,采用NLJ方法(随机数直接搜索法)以ITAE(时间乘误差绝对积分)指标最优为目标对PID控制参数寻优整定。使用该方法在FESTO过程控制系统上进行液位设定值跟踪控制实验,并于传统Z-N参数整定法进行了比较,该方法控制效果比较理想。

Based on system identification with recursive least squares method,the NLJ optimizing algorithm is used to tune the PID control parameters.Level tracking control experiment with this method is done on FESTO process control system.And the comparison with traditional Z-N method proves the optimized PID control performs better.