Time series data problem
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I'm trying to do vibration order analysis I save my data in time series from my simulation.
I want to take delta T for my waveform so when I try to do it using trigger block in a new simulation my data some how distorted.
You can see both waveform in the attachment.
How we can fix it!!!
6 个评论
Mathieu NOE
2020-12-22
hello
in order analysis , we use a trigger to split the raw signal in buffers of equal length and do averaging, so it reduces the effect of noise and non synchronous signals
but in your case I don't understand what you are doing
do you have a simulink file to share ?
tx
jessupj
2020-12-22
i've had trouble with simulink solver taking timesteps that were too large, which generated artifacts like this.
try perhaps: changing simulink solver tolerance, setting the maximum timestep to be much smalle, or toy with the timestep in a fixed increment solver until you balance step size with your tolerance for waveform irregularity.
Adeel Ashraf
2020-12-23
Adeel Ashraf
2020-12-23
Mathieu NOE
2020-12-23
编辑：per isakson
2020-12-25
Hello Adeel
I tested your mdl file but it did not produce the distorded waves you showed in first instance
I just recommend to not use variable time solvers when you want to deal with triggered systems ;
I like the idea of having my simulink file functionning at fixed and deterministic time stamps
so I changed the parameters of the solver t "fixed time stamps" even I could not really notice the effect on your simulation (again, it did not reproduce the distorted waves)
Adeel Ashraf
2020-12-25
Hi Methieu,
I really appreciate for your help. I tried accordingly but still the reults are not according to the expectation. I took that pulstrain signal from the incremental shaft encoder. You can see the attachment how I did it.
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2020-12-22
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