Single lookup table block in Simulink for 300 sets of data?

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want2know 2014-6-12

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关闭： MATLAB Answer Bot 2021-8-20

Hi,

I would like to know if it is possible to use JUST a single lookup table block in Simulink for 300 different sets of data?

In 1-D Lookup table block, I can define the table data and breakpoints.

How if I have 300 sets of different table datas and breakpoints?

What I am doing is by saving those 300 sets of data in .mat file and calling the interpl function from file, I prefer to use 1-D Lookup table block in Simulink since it is dragging too slow in the method I am currently using.

Appreciate any input, thanks!!

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Kaustubha Govind 2014-6-13

Could you explain the usecase a bit more? How do you choose from the 300 sets? Is the choice made at run-time? The table data is a non-tunable parameter, so it is not possible to change it at run-time.

want2know 2014-6-16

编辑：want2know 2014-6-16

Thanks for your reply.

Previously, I have 300 inputs to a single 1-D lookup table where all the 300 inputs are using the SAME table data and breakpoints. For example,

Input = [5 80....] % 300 values Tabledata=[1000...]% 10 values breakpoint=[3...]%10 values

I have no problem for the above case where, with 300 inputs, the 1D lookup table will peform the interpolation to give me 300 corresponding outputs.

What I want to do now is to have different sets of table datas for 300 inputs to single 1-D Lookup table.

I have the table datas prior to simulation.

So what I am doing now is to do the interpolation by accessibg .mat file from S-function level-2 and it made the simulation a lot slower.

I prefer to use the lookup table block in Simulink and would like to check if this is possible.

I checked at this link, http://www.mathworks.com/matlabcentral/answers/92225-can-i-have-a-simulink-lookup-table-block-that-looks-up-different-datasets-for-the-same-input-and-ret

but i have trouble to really figure it out that it did what I want and am still trying.

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Answer 1

want2know 2014-6-13

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