Using crank angle-resolved data in Matlab/Simulink
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Hi, I'm trying to analyse some cylinder pressure data that is crank angle-resolved, i.e. asynchronous in time. I have one sample every 0.5 degree.
So I have two questions:
- How do I use e.g. Butterworth filter ( butter() ) on the pressure data in Matlab when I do not have a constant sampling frequency?
- How am I supposed to handle this in Simulink, discrete data without a constant sampling frequency?
EDIT: I should add that I have no time vector, just a vector of the according speed of the engine in RPM. Regards, TheNovice
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