How to send continuous data from simulink block

15 次查看（过去 30 天）
Rahul kumar
Rahul kumar 2012-8-17
Hello,
I have to develop a model in Simulink which can send data continuously, the sent data should be stored in a block and if it reaches some predetermined value. It should trigger the next block.
I increase the value of a constant block by this code..!
for a=1:0.1:10
set_param('MyModelName/Constant','Value',num2str(a)) %send a to the model
pause(1) %pause for 1 second
end
but it is not sending the data continuously, everytime i have to press Run button.
let me know ur idea
Thanks in advance
  9 个评论
显示 7更早的评论
Rahul kumar
Rahul kumar 2012-8-20
编辑：Rahul kumar 2012-8-20
yes it is a signal coming out of that conditional block, not data

请先登录，再进行评论。

请先登录，再回答此问题。

回答（3 个）

Ryan G
Ryan G 2012-8-17
I don't think this code does what you think it does. There is no real-time operations between MATLAB and Simulink, so when you pause for 1 second it could take 1.5 seconds to process the next point in the sim or it could take 100 seconds in the sim depending on how fast it moves.
Try pre-packaging the data with a Time and Data vector and utilizing a To Workspace block or an Inport. For continuity you want to enable interpolation.
Albert Yam
Albert Yam 2012-8-17
Why do you need the 'pause'? If you want an input to 'change over time', use a look-up table, or signal generator.
hm..deja vu
  1 个评论
Albert Yam
Albert Yam 2012-8-21
You still have yet to explain why you need to store the value, and you just reiterated your wording, almost verbatim, so no, not more clear.
clock -> Look-up(n-D) -> Compare to Constant ---> Scope(2)
--------------------------> Scope(1)
Where
Look-up(n-D)
table dimensions = 1
First input (row) = 0:length(a)-1
Table data = a %where in workspace: >> a = 0:0.1:10;
Compare to Constant
Operator = >
Constant value = 5

请先登录，再进行评论。

Rajan
Rajan 2012-8-20
I don't think you can change a value used in constant block ,as the name of the block suggests ,it is a constant value through out the execution.
Don't sent the data from a constant block , instead make a simple addition which increments by 0.2 every time with in the model(not from the code) and send the output of sum block to your data store block . Or compare the output of sum block with comparator block (==6).
I hope this serves your cause.

类别

在 Help Center 和 File Exchange 中查找有关 Simulink Functions 的更多信息

标签

产品

Community Treasure Hunt

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

Start Hunting!

Translated by