摘要
基于双通道继电反馈测试及其改进方案 ,提出一种提取 SISO系统频域信息的闭环辨识测试方法。该方法具有许多有意义的特性 ,能在很大程度上克服现有辨识测试方法的问题与不足。在充分获取系统频域信息的基础上 ,引入频域辨识算法得到系统的低阶传递函数模型。对两个典型过程的仿真取得了良好的效果 ,表明了所提出方法的有效性。
Based on the two-channel relay feedback and its improved version, a novel closed-loop identification test method TRFT to efficiently extract multi-point frequency characteristics of SISO systems is presented. This method can overcome some serious shortcomings from other existing test methods. Furthermore, on the basis of obtained multi-point frequency characteristics through TRFT, a frequency-domain identification algorithm is introduced to estimate the transfer function model. The simulations on two typical processes show excellent results and verify the validity of the identification method.
出处
《控制与决策》
EI
CSCD
北大核心
2002年第4期411-414,共4页
Control and Decision
关键词
继电反馈
双通道继电特性
频域辨识
传递函数模型
Feedback
Frequency domain analysis
Identification (control systems)
Mathematical models
Transfer functions