A STUDY ON HIGH PRECISION IDENTIFICATION PROCEDURE BY USE OF SHORT SAMPLE

 AND DENSE MODE DATA

Sha Weiping  Hu Zizheng  Wang You

(Jilin University of Technology)

Abstract: It is a kind of important method that structural parameters are identified by use of testing impulse response data. This paper presents a synthetic “ Time-Frequency Domain (TFD)” identification procedure in order to improve the accuracy of parameter identification of systems with wide frequency band and dense modes. The mathematical principle about TFD identification method are discussed. A practical example in engineering is shown.
Key words: Mode identification  Precision  Matrix
Received 19910303, received in revised form 19920317