05-10-2006 01:12 PM
05-10-2006 01:55 PM
05-10-2006 04:01 PM
That is where it gets tricky. We would like to do it automatically.
To give you some background, the curve that you see represents force vs. distance. The process is that of something being pushed over something else and we have different lengths of materials so the curves will start and end and different places depending on the length of the material.
05-11-2006 09:22 AM
05-11-2006 04:23 PM
Lynn,
The second segment will always have a lower amplitude than the first but one thing that is not entirely visible in the graphs that I sent you is that the end of the graph (around 15.25") is where the hydraulic pressure peaks because the ram has bottomed out. Is there a way to eliminate those values in my peak measurement so I can establish the first "peak" as a dividing point and take a slope measurement up to and after that "peak"?
Would it also be feasible to take the slope until it goes negative and then use that point? And if so, how would I go about doing that? I apologize but I am extremely new to LabView.
Thanks for all your help thus far, it is very appreciated.
Dave
05-12-2006 08:05 AM
05-12-2006 08:45 AM
05-12-2006 11:16 AM
05-12-2006 11:30 AM
05-12-2006 11:50 AM
Sorry about that. The waveform images that I posted have been inverted. And the data also shows a timestamp that isn't used. The "C" column of the data is the y-values and the "B" column is the x values. The plot should be very similar to the images from before.
I am looking for the slopes that we were speaking about in the images. The approximate x-coordinates in the data that I gave that I am interested in are between
23.102293,-0.015259 & 19.172382,2.360143 and between 19.172382,2.360143 & 15.694584,2.211619
Those are the approximate data ranges that I am interested in. I hope that helps. Below is also a link to the VI that I have started to analyze that data that we are getting. if that helps.
http://www.rit.edu/~dwv2280/Analyze.vi