摘要
针对一阶加纯滞后(FOPDT)模型,基于最优传递函数,提出了Smith预估控制系统的PI参数整定方法。首先介绍了Smith预估控制方法,然后对比Smith预估控制系统的闭环特征方程式和二阶最优传递函数的特征方程式,得出PI控制器的参数整定公式,最后基于ITAE最优传递函数或Butterworth最优传递函数,给出了PI控制器的设计实例,并进行了相应的仿真。仿真结果表明,按该方法设计的Smith预估控制系统的动态性能和抗扰动性能都取得比较好的效果。
For first order plus dead time （FOPDT） model, tuning method of PI controller based on optimal transfer function was presented. Firstly, Smith predictive control method was referred. Then by contrasting the closed loop characteristic equation of Smith predictive control system with the characteristic equation of second order optimal transfer function, the tuning formulas of PI controller were educed. Lastly, the example of PI controUer design was given based on ITAE optimal transfer function or Butterworth optimal transfer function, which is followed by corresponding simulation. The result of the simulation shows that the Smith predictive control system is provided with good dynamic performance and anti-jamming. The method is simple and practical.
出处
《组合机床与自动化加工技术》
2006年第10期62-63,66,共3页
Modular Machine Tool & Automatic Manufacturing Technique
基金
福建省自然科学基金项目(A0410020)
