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一种基于小波多分辨分析的多率采样系统辨识方法
引用本文:吕立华,宋执环,李 平.一种基于小波多分辨分析的多率采样系统辨识方法[J].控制理论与应用,2002,19(2):225-228.
作者姓名:吕立华  宋执环  李 平
作者单位:工业控制技术国家重点实验室,浙江大学工业控制技术研究所,杭州,310027
基金项目:国家自然科学基金(20076040); 广东省现代控制技术重点实验室资助; 浙江省自然科学基金(601114)资助项目.
摘    要:基于小波多分辨分析理论并结合面向控制的辨识思想, 提出一种多率采样系统分频段加权辨识方法. 首先研究了采样信息的一致性重构问题, 然后给出一种新颖的分频段加权辨识方法. 此方法的最大特点是对噪声不敏感, 易实现对感兴趣频段的精确建模, 便于和控制系统设计相配合. 仿真结果验证了这种方法的可行性.

关 键 词:小波多分辨分析    多率采样系统    分频段加权    CRID
文章编号:1000-8152(2002)02-0225-04
收稿时间:5/8/2000 12:00:00 AM
修稿时间:2001/2/19 0:00:00

An Identification Method for Multirate Sampled-Data Systems Based on Wavelet Multiresolution Analysis
L Lihu,SONG Zhihuan and LI Ping.An Identification Method for Multirate Sampled-Data Systems Based on Wavelet Multiresolution Analysis[J].Control Theory & Applications,2002,19(2):225-228.
Authors:L Lihu  SONG Zhihuan and LI Ping
Affiliation:National Laboratory of Industrial Control Technology, Institute of Industrial Process Control, Zhejiang University, Hangzhou, 310027, P.R.China;National Laboratory of Industrial Control Technology, Institute of Industrial Process Control, Zhejiang University, Hangzhou, 310027, P.R.China;National Laboratory of Industrial Control Technology, Institute of Industrial Process Control, Zhejiang University, Hangzhou, 310027, P.R.China
Abstract:Based on wavelet multiresolution analysis theory, this paper proposes a novel method for multirate sampled-data systems identification. First, the problem of multirate sampled_data reconstruction is studied, then a weighted band_wise identification method is presented. This method has the advantages of insensitivity to noise and convenience in modeling the interesting band of plant precisely, and easy incorporation with system design. Simulating results are given to illustrate that this method is feasible in model identification.
Keywords:wavelet multiresolution analysis  multirate sampled-data systems  weighted band_wise  control-relevant identification
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