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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Jury stability criterion ： ウィキペディア英語版 Jury stability criterion In signal processing and control theory, the Jury stability criterion is a method of determining the stability of a linear discrete time system by analysis of the coefficients of its characteristic polynomial. It is the discrete time analogue of the Routh–Hurwitz stability criterion. The Jury stability criterion requires that the system poles are located inside the unit circle centered at the origin, while the Routh-Hurwitz stability criterion requires that the poles are in the left half of the complex plane. The Jury criterion is named after Eliahu Ibraham Jury. == Method == If the characteristic polynomial of the system is given by : $f(z)=a\_0z^+a\_1z^+a\_2z^+\backslash cdots+a\_z\; +\; a\_n$ then the table is constructed as follows: That is, the first row is constructed of the polynomial coefficients in order, and the second row is the first row in reverse order and conjugated. The third row of the table is calculated by subtracting $\backslash frac$ times the second row from the first row, and the fourth row is the third row with the first n elements reversed (as the final element is zero). : $$ \begin a_0 \;\; & a_1 \;\; & \dots \;\; & a_ \;\;& a_n\\ a_n \;\; & a_ \;\; & \dots \;\; & a_1 \;\;& a_0\\ \left(a_0-a_n \frac\right)\;\;& \left(a_1 - a_ \frac\right) \;\; &\dots\;\; & \left(a_ - a_1 \frac\right) \;\;& 0 \\ \left(a_ - a_1 \frac\right) \;\; & \dots \;\;& \left(a_1 - a_ \frac\right) \;\;& \left(a_0-a_n \frac\right)\;\;&0\\ \end The expansion of the table is continued in this manner until a row containing only one non zero element is reached. Note the $\backslash frac$ is for the 1st two rows. Then for 3rd and 4th row the coefficient changes (i.e. $\backslash frac$) . This can be viewed as the new polynomial which has one less degree and then continuing. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Jury stability criterion」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.