adding output disturbance to simulink model

I would like to add output disturbance to a signal in simulink. I have a transfer function for the output disturbance.
I have added a simulink file of my attempt.
It does not seem to work.

 采纳的回答

If the input to the Output Disturbance Transfer Function (ODTF) block is not connected, it will be considered as zero input by default. If you don't know any specific input to ODTF block, then tap the signal (orange arrow) from the Unit Step block and connect it to the ODTF block as shown in the figure below:
If all of the poles in the Output Disturbance Transfer Function have negative real parts, then it should work. Hope this helps!

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