Use of Arrays in Simulink

Question

Dhruv 2013-8-13

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/84641-use-of-arrays-in-simulink

评论： Keerthi Shankar 2022-3-18

hey,

I am reading a predefined array in a constant block in Simulink which then undergoes some simple logical operations like '<','>','and', etc. the output of which goes into an 'If' block.

This gives me an error as the input to the 'If' block has to be a single value and I seem to be inputting values of the length of my original array.

Is there some kind of a work around anyone could suggest?

Thanks, Dhruv

2 个评论
显示无隐藏无

Azzi Abdelmalek 2013-8-13

Can you give an example of your array?

Dhruv 2013-8-13

编辑：Dhruv 2013-8-13

what I am looking to do is that I have an array of values and I need to delete some really small values from this array

say an array [10,17,12,2,9,4,21,18] and I want to remove all values below 5. So the 2 and 4 should be replaced by 0.

edit

I cannot use the Matlab function block as I need to compile my code and use it with TargetLink later.

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Friedrich 2013-8-13

2
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/84641-use-of-arrays-in-simulink#answer_94210

编辑：Friedrich 2013-8-14

在 MATLAB Online 中打开

Hi,

why not using a MATLAB function block with this code:

function y = fcn(u)
%#codegen
u(u<5) = 0;
y = u;

EDIT Way without MATLAB function block:

%

5 个评论
显示 3更早的评论隐藏 3更早的评论

Melik BEN MARZOUK 2021-4-19

Ommgggg thank you so much! So clever!!!!

Keerthi Shankar 2022-3-18

If I want to take particular element from the array how can I take it I am trying to implement interpolation taking two constant blocks as array... Could anyone help me with this

请先登录，再进行评论。

Answer 2

Kaustubha Govind 2013-8-13

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/84641-use-of-arrays-in-simulink#answer_94202

Perhaps you can AND all the bits in the array together?

2 个评论
显示无隐藏无

Dhruv 2013-8-13

thanks for your answer.

The suggestion wouldnt work as I need to run the 'If' for every value in the array.

Dhruv 2013-8-13

what I am looking to do is that I have an array of values and I need to delete some really small values from this array

请先登录，再进行评论。

Answer 3

Chandrasekhar 2013-8-13

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/84641-use-of-arrays-in-simulink#answer_94209

have u tried using an assignment block

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。

Answer 4

Dheeraj Kapur 2017-7-13

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/84641-use-of-arrays-in-simulink#answer_273980

Hi, You can use a logic which I like to call the "moving" logic. You define the array in workspace, pass each of them into a decision box where if the value is less than 5 then replace it with 0; otherwise keep it same. Reconfigure the array on the other side and proceed as needed