Is there lqid() ? Lqr() has lqrd(), but I can't find lqid()

Question

John 2023-3-28

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1936959-is-there-lqid-lqr-has-lqrd-but-i-can-t-find-lqid

评论： Paul 2023-3-29

采纳的回答： John

Is there lqid()?

Lqr() (continuous-time) has lqrd() (discrete-time), but I can't find lqid().

Is lqi() overloaded for discrete, or am I just trying for the wrong function name for discrete lqi?

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

John 2023-3-29

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1936959-is-there-lqid-lqr-has-lqrd-but-i-can-t-find-lqid#answer_1204289

To answer my own question, after writing to mathworks:

lqr() has lqrd(), but there isn't an equivalent for lqi(). lqi() is overloaded and accepts discrete system, and returns discrete gains. I missed that in the documentation.

I'm not sure why lqr() has different versions, but, hopefully this helps anyone else wondering.

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Paul 2023-3-29

lqr is also overloaded and can accept discrete- or continuous-time system as the sys input. lqrd isn't the same as lqr() with a discrete sys input. The Q and R and N matrices mean different things for the two functions.

请先登录，再进行评论。