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Integrating Acceleration (Simulated) to Velocity

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Hey,

 

I am relatively inexperienced in LabView. I am trying to integrate a simulated sine wave to get a cosine wave. I am considering this sine wave as a form of acceleration (hypothetical)  by scaling it using the voltage to EU vi available in the Sound and Vibration Toolkit. After scaling I am getting the hypothetical acceleration in g units which I am then integrating to velocity using the 'SVL Integration vi'. Now I should be getting 90 degree phase shifted signal at the output (cosine wave) right?

The issue is that when my sine wave signal is generated with the reset signal parameter being true it's not giving me the exact cosine output. But when the reset signal is false I am accurately getting the exact 90 degree shifted wave. Why is this happening can someone explain this to me? 

I have attached the images and the VI below,
Thank You.

 


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