一种基于改进双通道继电测试的闭环辨识方法研究  

Closed-loop identification method based on improved two-channel relay feedback

作　　者：王学雷[1] 邵惠鹤[1] 

机构地区：[1]上海交通大学自动化研究所,上海200030

出　　处：《控制与决策》2002年第4期411-414,共4页Control and Decision

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.

关 键 词：继电反馈 双通道继电特性 频域辨识 传递函数模型 

分 类 号：TP17[自动化与计算机技术—控制理论与控制工程]