How to get a damped sine wave with phase delay in Simulink?

As seen in the above image, I would like to get a sine wave in Simulink. The parts labelled "A" and "C" are equal to 0 and the length should be given as user input. The section labelled "B" is a damped sine wave with fixed frequency of 4 Hz.

Thanks in advance!

Answer 1

[Pavel Dey]

You may use element-wise product to get an exponential sine wave. For conditions on beginning and ending of the signal, you may use a counter and a conditional switch. Refer to the attached demo model.

[Avinash Prakash]

Hey Pavel!

Thank you for the answer. I checked your Simulink file and it is approximately what I wanted.

What I wanted is, say for example x ranges from 0 to 10.

y=0 for 0<x<4

y=A*sin(2*pi*f*t) for 4<x<8

y=0 for 8<x<10

The values for the limits that I have given (4,8) should be controllable in the Simulink loop or Matlab script!

I hope you got my point. Please let me know if you have any doubts.

Thank you so much for your time.

Regards,

Avinash