Fred,
coil winder ... then indeed you want these multiple revs/s
I agree with Steve, this is a cool application.
His remarks sound usefull. But then, should stepconf not prevent us to
do this?
I configured my system using stepconf and it will just not allow me to
increase the speed above a certain value depending on stepper pulse
width settings and latency test results.
Did you use the latency-test command to test your system? Yes, of course
you did - you've been banging your head for a few days on this problem now.
I am very close to the limits my PC can handle, while milling my CPU
load is somewhere around 80% so I may have to check out Steve's info a
bit more to see if I still have a sane system.
Yesterday I also noticed strange behaviour where my mill sometimes
returns to point 0 with an error of more than 1/100 of a mm, while most
cases the accuracy is more than 20/1000 mm. Looks like I may also have
axis following problems since I already trimmed down my system to 50% of
max measured speed (which is not the max. machine speed but the max. PC
speed ...)
Steve, do you know if BASE_PERIOD is the same as the latency test result
filled in into stepconf?
I set this value to 15000 ns, the default value of the tool and a bit
higher than the 12000 I got as a result from latency-test.
Still, I think 80% CPU load may be too high for a real real-time system.
Regards,
Rob
> Rob,
>
> Let me clarify a bit. The application is for a coil
> winder on a non round form. The form will be directly
> attached to the motor shaft.
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