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different sample times of vectors

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Owen
Owen 2012-11-22
关闭： MATLAB Answer Bot 2021-8-20
Hi,
A data stream with a constant sample time 'ts' shall be converted to vectors of 2 different lengths (2 and 4) with the Buffer block. Example:
Data stream = … 1 2 3 4 5 6 7 8 9 10 11 12 …
Vector1 = … [1 2], [7 8], …
Vector2 = … [3 4 5 6], [9 10 11 12], ...
These 2 vectors must be combined with a constant from the Constant block with the Matrix Concatenate block.
For vector1: constant = [100 100]
For vector2: constant = [200 200]
So the result shall be:
End vector1 = … [100 100 1 2], [100 100 7 8], …
End vector2 = … [200 200 3 4 5 6], [200 200 9 10 11 12], …
The transmitted sequence shall be: … end vector1, end vector2, end vector1, end vector2 …
The problem is, there are 2 different sample times after the Buffer block: 2*ts and 4*ts. It seems very difficult to synchronize with this constant.
I tried to set the sample time of the Constant block as 2*ts and 4*ts with an Embedded Matlab Function at different time points but it doesn’t work (the output is only with length of 2 or length of 4 but not mixed as expected).
Can anyone show me a way?
Thanks Senmeis
  2 个评论
Azzi Abdelmalek
Azzi Abdelmalek 2012-11-23
Can you post your simulink model?
Owen
Owen 2012-11-25
I’m sorry but it's not allowed to copy something from the computer in which Matlab is installed.
I think maybe I should do the procession in S functions or Embedded Matlab Functions. Sometimes I feel Simulink is only suitable for easy tasks. But thank you anyway.
Senmeis

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