How to achieve fan rpm with increasing step size?

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I have a Simulink model in that I want to achieve fan rpm speed by increasing up to 1500 rpm. I have used a 1-dimensional table that includes temperature and revolutions per minute. So my rpm depends upon the temperature. But if the temperature is 50, the fan rpm will go to 1500 rpm. In this case, fan rpm should increase with a step size. How can I achieve this?
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sudarshan Kanse
sudarshan Kanse on 27 Feb 2023
I have attached the scope results. When I increase temp from 20 to 50, it will go in step size. But when my temp is 50, the fan rpm will go 1500rpm. So want to achieve this 1500 rpm with a step size.

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Accepted Answer

Fangjun Jiang
Fangjun Jiang on 28 Feb 2023
The "step" increase you saw is probably determined by your lookup data and simulation step size.
What you really need is probably the "Rate Limiter" block. It limits how fast a signal can increase or decrease its value.

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