How do I convert a complex ss model to a real ss model

5 ビュー (過去 30 日間)
Alan
Alan 2020 年 4 月 20 日
編集済み: Alan 2020 年 4 月 20 日
If I have a state space model something like
A = [-0.005+sqrt(2)*1i 0 ; 0 -0.005-sqrt(2)*1i];
B = [ -1+1i
-1-1i];
C = [ -1+1i -1-1i];
D = 0;
s = ss(A,B,C,D)
tf(s)
with balanced pairs of complex numbers, how do I convert this into a purely real state space model. (Using something like a 'modal' version of canon or cdf2rdf?
Note the output of tf has a small imaginary part. I'd like to get rid of that too.
(5.657+2.665e-15i)
------------------
s^2 + 0.01 s + 2
  1 件のコメント
Alan
Alan 2020 年 4 月 20 日
編集済み: Alan 2020 年 4 月 20 日
Reading my question back I tried this,
canon(canon(s,'companion'))
and it works! I need to check some more to see if this is a general solution. Is there a better way?

サインインしてコメントする。

回答 (0 件)

カテゴリ

Help Center および File ExchangeDynamic System Models についてさらに検索

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by