how to find the bandwidth of a system?

11 次查看（过去 30 天）
Sahar
Sahar 2015-4-1
评论： Sahar 2015-4-9
Hi. I have a MIMO system with 4 different transfer functions, I need to find the bandwidth of the system with MATLAB, I need it to generate a PRBS signal for system identification. can anyone give a hint or help?

请先登录，再回答此问题。

回答（1 个）

Christiaan
Christiaan 2015-4-2
编辑：Christiaan 2015-4-2
Dear Sarah,
To generate Pseudorandom Binary Sequence, please have a look at this Mathworks documatation.
To find the bandwidth of your system, you could have a look at the MATLAB function bandwidth. This function computes the bandwidth fb of the SISO dynamic system. Since you have a MIMO, you could first try to still apply this function for your system. If that doesn't work, you could also try to find for each transfer function the bandwidth and use the superpose principle to make a statement of the bandwidth of your total system.
Good Luck! Christiaan
  1 个评论
Sahar
Sahar 2015-4-9
Thanks Christiaan,
so by just typing "bandwidth(transferfunction_1)" in MATLAB; I get a number! what is this number exactly telling me? The problem is I have 4 heating circuits, heating up, I need to know the dominant time constant! to avoid burning the heating element. how do I find this? from bode plot? from MATLAB command "pole(transferfunction_1)" until 4, or from bandwidth?
Thanks, Sahar

请先登录，再进行评论。

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