How to overcome zero offset before integration to get velocity
How to overcome zero offset before integration to get velocity
(OP)
Hi I retrieve acceleration signal from a PCB sensor with a NI DAQCard and try to integrate numerically the signal using the routine (called vi's in Labview enviroment) the program has to integrate but I get a lot of clearly spurious low frequency peaks. How can I get rid off this problem? I would like to kip the concept of integrating within the program instead of using an integrator circuit. Is there a vi that performs this job beter than the one in LabView
Thanks
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RE: How to overcome zero offset before integration to get velocity
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RE: How to overcome zero offset before integration to get velocity
But, I think IR has a very valid point. If the integrator outputs something that you do not expect, it is usually the expectations that are wrong. Accelerometers do not know what you want them to output. They output everything they sense. Including Earth's gravity, earthquake acceleration components and also small vibration amplitudes that you are not aware of existed. An external integrator would do exactly the same thing. If not AC-coupled.
Gunnar Englund
www.gke.org
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RE: How to overcome zero offset before integration to get velocity
RE: How to overcome zero offset before integration to get velocity