MATLAB: I would like to change gain every step / to be a function of time for the TF, is this possible somehow

functiongainkMATLABsimulinkstair generatorsteptftransfer

In Simulink I have the following system

stair gen > gain > TF > scope can the gain change based on time or step change?

Thanks in advance! Best regards

Best Answer

Instead of a Gain block, use a Product block... then, pass in the "gain", which is now one of the 2 inputs of the Product block, as a time-varying signal.

- Sebastian

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MATLAB: Gain

Do you plan to use the Clock block to determine when t>5secs? It is typically not possible to change a block parameter based on the output of another block. See http://blogs.mathworks.com/seth/2011/03/08/how-do-i-change-a-block-parameter-based-on-the-output-of-another-block/ for further explanation.

However, in your case, you can simply use a Product block instead of a Gain block. Use your input signal as one of the inputs, and for the other input connect a Switch block which takes "100" and "200" as its inputs - you can use a Clock block with a comparison operator to determine when to switch between the "100" and "200".

MATLAB: If i have poles and zeros of a transfer function, how to obtain this transfer function ??

transfer_function = tf( zpk(ListOfZeros, ListOfPoles, ListOfGains))

Best Answer

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MATLAB: If i have poles and zeros of a transfer function, how to obtain this transfer function ??

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