Simulink MPC Designer ZOH FOH Error

31 次查看（过去 30 天）
Henry Provan
Henry Provan 2016-3-5
回答： dekun wang 2021-5-18
I am trying to design an MPC controller using the simulink controller toolbox. Whenever I try to make the MPC sample time less that 1, I get the following error: "The "zoh" and "foh" methods cannot be used for discrete models with poles near z=0" Could someone please explain what the error means and how I fit my controller? Thanks
  2 个评论
Jordan Olson
Jordan Olson 2020-7-1
I'm also having this issue, but changing the sample time in the MPC doesn't fix it.

请先登录，再进行评论。

请先登录，再回答此问题。

回答（1 个）

dekun wang
dekun wang 2021-5-18
poles in discrete domain near z=0 means poles in continuous domain tending to -infinite which means your system's natural frequency is infinitely large. It cannot be true for any systems. So my suggestion would be to double check your plant model.

类别

在 Help Center 和 File Exchange 中查找有关 Controller Creation 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