control parameters of a simulink block

Hi,

Is it possible to control parameters of a simulink block with another block? Say create a block which controls the 'seed' value of 'Random Number Generator'.

Thanks Senmeis

Answer 1

[Kaustubha Govind]

In general, this is not a supported workflow, please see How Do I Change a Block Parameter Based on the Output of Another Block? The suggested solution would be re-implement the block so that the parameter value is accepted via an input port.

Answer 2

[Ryan G]

You can do this by utilizing a MATLAB function that can call the set_param command. You may be able to use the interpreted MATLAB function which would be similar but I never tested it for set_param.

However, you cannot change the seed of the random number generator during simulation as it is not tunable during simulation.

Answer 3

[Owen]

Thank you, but I don't intend to set parameters during simulation, but before any simulation. In fact I must set the parameters 'Number of outputs' in all blocks 'Demux' in a model globally.

I think it is much easier than setting at runtime.

Thanks Senmeis

[TAB]

You can double click on the block and change the parameter value directly or you can you set_param function to set the parameters from command-line/m-script.

Isn't it works for you ?

[Kaustubha Govind]

Owen: I see. Your question threw me off: "Is it possible to control parameters of a simulink block with another block?" - suggests that you want to control parameters based on the output of another block.

If you simply need to control parameters before running the model, please follow TAB's suggestion.