How to create pulsed sine waves in SIMULINK - that turns off at intervals?

I want to generate sine wave signals that turn off for a specified period of time and then starts again. Is there a block in SIMULINK that would help me accomplish this.

Answer 1

[Peter O]

Assuming that the sine wave is allowed to restart at an arbitrary position, I think the cleanest way might be route the sine wave block through a product block. The second input is 1 if the time is within a "turn on" interval and zero otherwise.

If you need the sine wave to restart from zero on each on/off interval event then it's a little more involved. You'll still need an interval comparison, but that will need to trigger the sine wave to restart its angle. Still use the product block to zero or pass through the sine, but on each new zero crossing, update to the time of the latest zero crossing and . You can probably use the triggered subsystem construct to accomplish this.

[Azeem Singh Kahlon]

Thank you so much for your answer Peter. I implemented your solution and it partially worked (or I am missing something). On using the product block, I do get the zero signal but the sine wave never restarts.

The wave/signal does NOT need to restart from zero. It should start from where it should have been if it was continous. Thank you so much for your help Peter.

[Jonas]

Instead of a Step block, you need to use a Pulse Generator.

[Azeem Singh Kahlon]

Thanks a lot Jonas. This worked