help rlocus function graph

2017 10 17
1 个回答
更新时间：2017 10 19
5 次查看（30 天）

0 个投票

I have matlab R2017a with academic licenze, the function rlocus, rlocusplot, don't work, don't plot the graph, but matlab don t have error.what I can do ??

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KSSV
KSSV 2017-10-17
What error it shows up? You have to specify the code and error you got to get help.
marco sebastianelli
marco sebastianelli 2017-10-17
mi code is: h = tf([1 2 3],[4 3 5]); rlocus(h); matlab no return error, appears the figure axis X axis Y but don't plot the graph
marco sebastianelli
marco sebastianelli 2017-10-17
but if use this code : h = tf([1 2 3],[4 3 5]); [R,K] = rlocus(h); message error is :Error using DynamicSystem/rlocus (line 51) Invalid MEX-file 'C:\Program Files\MATLAB\R2017a\toolbox\shared\controllib\engine\numerics\frkernel.mexw64': Missing dependent shared libraries: 'libmwslicot.dll' required by 'C:\Program Files\MATLAB\R2017a\toolbox\shared\controllib\engine\numerics\frkernel.mexw64'.

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回答（1 个）

David Ding
David Ding 2017-10-19
编辑：David Ding 2017-10-19

0 个投票

Hi Marco,
I understand that the following code
>> h = tf([1 2 3],[4 3 5]); [R,K] = rlocus(h);
is giving you error in R2017a.
I was not able to reproduce this on my end in R2017a. Given the fact that the error points to a missing DLL file, your best bet would be to reinstall MATLAB and run the code again upon re-installation.
Hope this helps.
Thanks,
David

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