Control System Designer: Inconsistent Controller Output Step Response

134 次查看（过去 30 天）
Markus M.
Markus M. 2025-9-11，20:20
评论： Markus M. 2025-9-19，8:35
I use the control system designer with e.g simple plant and controller:
s = tf('s')
G = 1/(s+1)
C = 1/s;
controlSystemDesigner(G,C);
and the default control system architecture
After adding the step reponses
(via selection from step reponses) and
via:
I expected them to be the same responses (since du is probably 0).
The response is correct, however is wrong (unbounded) and differs from :
Is this a bug?
Best regards
Markus

请先登录，再回答此问题。

回答（1 个）

Paul
Paul 2025-9-11，21:21
I can recreate these result and uc/r certainly looks incorrect. After exporting the systems to the base workspace I get:
>> tf(IOTransfer1)
ans =
From input "r" to output "u":
s + 1
-----------
s^2 + s + 1
Continuous-time transfer function.
Model Properties
>> tf(IOTransfer2)
ans =
From input "r" to output "uC":
s + 1
---------
s^2 + 2 s
IOTransfer2 surely is incorrect and I can't figure out how such a result was obtained.
  13 个评论
显示 11更早的评论
Paul
Paul 2025-9-19，3:16
@Markus M.
Have you received confirmation of bug, or other closure, from Mathworks tech support?
Markus M.
Markus M. 2025-9-19，8:35
@Paul, yes Mathworks has confirmed this as a bug, which will be investaged and fixed. If an external bug report is published I am going to link it to this thread.

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Tuning Goals 的更多信息

标签

产品


版本

R2025a

Community Treasure Hunt

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

Start Hunting!

Translated by