How to create a sine wave with variable frequency - Simulink
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I have the following problem. I have a set of data of my vehicle and need the acceleration data in the shape of a sine wave. The sine wave is then used to include some bearing faults. I could compute for every time step the frequency based on the velocity, which then can be used in the further steps.
Does anyone has an idea in how to create a sine wave with various frequency?
Thank you in advance!
Mathieu NOE 2020년 12월 8일
if you have the frequency at each time step, you can also calculate the angular increment at each time step : d_theta = 2*pi*freq*dt.
Then you simply need to integrate it (do a cumulative sum, modulo 2pi) to get the angle, then apply sin function.