摘要
基于对被控对象传递函数的估计,提出一种闭环PID参数整定方法。通过实时采集被控对象的输入输出数据,采用平均相关系数法估计被控对象的传递函数。然后采用时域受限二次型目标函数寻优PID参数。最后用工业应用实例,说明该方法的有效性。
Based on the estimation of a controlled plant＇ s transfer function model, a method for the self-tuning of PID controllers in closed-loop system is proposed. By average correlative coefficient approach, the transfer function of a plant is estimated from its I/O＇s data collected real-timely. Using a constrained quadratic objective function in time domain, the PID parameters are optimized. The application shows that the method is valid.
出处
《化工自动化及仪表》
EI
CAS
2006年第2期33-35,共3页
Control and Instruments in Chemical Industry
关键词
PID自整定
模型估计
平均相关系数法
传递函数
PID self-tuning
model estimation
average correlative coefficient approach
transfer function
