Quote:
Originally Posted by Tom Line
Ether - I'm not sure why you deleted your posts. The first one pointing to the paper helped me. Once upon a time when you first put that out I planned to throw it in excel and show my controls members how it worked. I did that last night, and with a couple tweaks found solutions that work with my 128 count encoder for both 3500 and 7500 with resolutions of +/- 2 and 4 rpm each at 10ms loop timing.
-Edit: Just saw your update that said there was a problem with your calculations. I look forward to the update so I can recheck my numbers.
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Hi Tom,
I'm working on it. Short story: I believe the calculations as shown
are correct for a given true rpm but: small variations of the true rpm around the given value can cause the jitter pattern to change and affect the jitter you would actually see in real life. I took the paper down because I did not explain this clearly and didn't want to mislead. I need to provide more graphs and explain them better.