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| 題 名 | System Identification for Using Initial Conditions as Active Parameters=系統識別之使用起始條件為主動變數 |
|---|---|
| 作 者 | 宋文沛; 施明祥; | 書刊名 | 勤益學報 |
| 卷 期 | 17 1999.11[民88.11] |
| 頁 次 | 頁365-377 |
| 分類號 | 441.3 |
| 關鍵詞 | 起始條件; 無雜訊; 動力分析; Initial conditions; Noise-free; Dynamic analysis; |
| 語 文 | 英文(English) |
| 中文摘要 | 系統識別是利用量測資料去創造或改良實驗物體之數學模型,但於實驗所得之資料,發現在起始資料中具有高頻率之收訊,解決的方法走跳過這些雜訊,本文將探討以起始條件為主動變數之公式及驗證結果。數學模型之建立以Berkey之三步驟為準則,並以誤差平方積分式顯示其接近的程度,本文選選高斯-牛頓法,系統調整數學模型的變數直到誤差方程式連到最小化,再將以上推導之方程式引入程式中。為了驗證其正確性,以剪力房屋進行單自由度及多自由度之數值模擬,分別進行不同時間開始的實驗,結果程式中誤差函數收斂快速,且主動變數收斂於相當近似的真值。 |
| 英文摘要 | System identification is a method for using measured data to create or improve a mathematical model of the object being tested. From the measured data however noise is noticed at the beginning of the response. One solution to avoid this noise problem is to skip the noisy data and then uses the initial conditions as active parameters, to be found by using the system identification process. In the first part of this paper describes the development of the equations for setting up the initial conditions as parameters, and then the simulated data as well as response data from actual shear buildings were used to prove the accuracy of both the algorithm and the computer program, which include the initial conditions as Active Parameters, are precise. |
本系統中英文摘要資訊取自各篇刊載內容。