摘要
针对本质稳定过程，以ＦＦＴ变换为手段，通过对串级系统输入输出数据的分析，得到主、副对象的频域特性，并通过降阶得到二阶模型及其无因次时滞，给出了主、副回路ＰＩＤ参数自动整定算法及公式。仿真结果表明了其良好的跟踪及抗干扰性能。
his paper addresses a method to estimate parameters of a cascade stable system in the frequence domain via FFT, based on the input -output data of the system. Then two second order reduced models and normalized dead-time are given. The paper also gives a PID auto-tuning formulas for controllers in the inner and outer loops. The simulation result shows the good response of the system to the setpoint change and load disturbances.
出处
《控制与决策》
EI
CSCD
北大核心
1996年第5期580-583,共4页
Control and Decision
基金
国家836计划资助
关键词
自动整定
PID控制
串级控制系统
cascade control system
auto-tuning
FFT
normalized dead-time
PID control
