Array variable as parameter value in simulink

Hi,

I have an 1-D array (ex: A) with a size exactly matching that of the total simulation steps. This array can be either stored in model or base workspace.

I need to set a block parameter to A(Index) with its index changing according to the simulation time.

How can I do this?

Thank you for your help.

Answer 1

[Paul]

Use a Selector block. Choose the 'Index option' as 'Index vector - port'. Then connect A to the U port and feed the Indx1 port with an integer that you develop from the the simulation time.

[Sridhar Balasubramanian]

Thanks..

My problem is little bit more complicated. I have a sine generator. And I need to assign A(Index) as the "frequency" parameter, so the value changes as the simulation runs dynamically, since Index also changes.

[Paul]

If implemented properly, the output of the selector block is A(index). Multiply it with the output of a Clock and then input the product into a Trigonometric Function block.

Another way to get A(index) is to use the 1-D Lookup Table block. Specify 'Flat' as the interpolation method. This approach would probably be easier than using the Selector block.

[Sridhar Balasubramanian]

Thank you.. I used set_param to update A(Index) in my block.