How do I express my numerator in the transfer function block (SIMULINK) if the s variable is in the exponent?

The numerator of my transfer function is 104e^-2.6s and I don't know how to express this in the transfer function block in Simulink. Need help for a school project. Thanks.

Answer 1

[Paul]

Hi Kaitlyn,

What does 10*exp(-2.6*s) represent in the time domain. Or more simply, what does exp(-2.6*s) represent in the time domain?

[Kaitlyn Llanes]

Hi! I'm unsure what it is in the time domain since I'm only given the transfer function of the open loop system. I'm trying to run the transfer function in simulink so I can make a PID controller for it.

I assume its a time shift situation(?) but im unsure how to properly apply it in the simulink transfer function block.

[Paul]

It it's a time shift situation, maybe a Transport Delay block would be useful.

Or, if you know the syntax to create that transfer function as a tf object in the Control System Toolbox, then an LTI System block may be useful.

[Kaitlyn Llanes]

both worked, thank you for this!