different sample times of vectors

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

[Azzi Abdelmalek]

Can you post your simulink model?

[Owen]

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