How can I use two PID controllers in Simulink?

11 次查看（过去 30 天）
Luca Repetto
Luca Repetto 2021-4-26
编辑： Luca Repetto 2021-4-27
I have designed a PID controller to track the first state plus some random noise, but I have also to design the same system with two PIDs, with the second state to be tracked. Here is a picture showing what I have done. Can you help me? Thank you in advance.
This is how I've done it with one PID.

请先登录，再回答此问题。

回答（1 个）

Fangjun Jiang
Fangjun Jiang 2021-4-26
Your output y seems to be 2x1, but if your current model runs, then your control variable u is 1x1. You can't have two PID controllers if you have only one contro variable.
If your control variable is indeed 2x1, then have another desired output, another negative feedback, another PID controller, and then Mux the ouputs of the two PID controller and feed to the State Space block.
  3 个评论
显示 1更早的评论
Fangjun Jiang
Fangjun Jiang 2021-4-27
When you have only one control variable, you can't have two PID controllers. Period.
When your Bc and D are 2x2 matrix, then you will natually have two control variables and you can have one PID controller for each.
Luca Repetto
Luca Repetto 2021-4-27
编辑：Luca Repetto 2021-4-27
Ok I think that I have misunderstood the text of my problem and the two PIDs are in parallel to track the state1.
What do you think that I have to do?
Thank you

请先登录，再进行评论。

类别

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

标签

产品


版本

R2021a

Community Treasure Hunt

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

Start Hunting!

Translated by