Bode plot from a string of complex numbers

8 次查看（过去 30 天）
Simen V-S
Simen V-S 2011-12-10
I am trying to plot a Bode plot based on a string of comlpex numbers. Thus I have tried to convert the string to corresponding magnitude in decibles and angles in degrees. I use the following code:
R9 = 20*log(abs(nspeed));
theta9 = (180/pi())*(angle(nspeed));
However, when I plot this it is ovious that the code thus not return angles below -180. Does anyone know how this can be solved?

请先登录，再回答此问题。

回答（1 个）

Abhishek Gupte
Abhishek Gupte 2011-12-11
The ANGLE function returns angles only between +/- pi. When the 'actual' angle goes above pi or below -pi, the ANGLE function will wrap the values. To get the 'actual' values, use the UNWRAP function.
theta9_unwrapped = unwrap( theta9 );

类别

在 Help Center 和 File Exchange 中查找有关 Get Started with Control System Toolbox 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by