How to start Hal in interactive mode
- Todd Zuercher
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10 Feb 2016 03:58 #69906
by Todd Zuercher
Replied by Todd Zuercher on topic How to start Hal in interactive mode
A good feed rate choice for testing is one that you might expect to use for most of your milling.
I kind of like to tune using pid-error rather than axis.N.f-error. For some reason (in the past at least) there is a difference in how these are calculated, and they will differ by an amount proportional to the velocity. This can lead to the problem that you might be trying to tune out a following error shown by axis.N.f-error, when the PID loop isn't actually detecting any significant error.
I kind of like to tune using pid-error rather than axis.N.f-error. For some reason (in the past at least) there is a difference in how these are calculated, and they will differ by an amount proportional to the velocity. This can lead to the problem that you might be trying to tune out a following error shown by axis.N.f-error, when the PID loop isn't actually detecting any significant error.
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18 Feb 2016 16:40 #70345
by jamby
Replied by jamby on topic How to start Hal in interactive mode
Hey
I tried to adjust the PID and Ferror setting without much luck or understanding. So since the mill was running well before the conversion I went ahead with physical testing / aligning the mill. Now after having run several test cuts including a circle-diamond-square I am satisfied for now with the performance and will look ahead to finishing the conversion.
Thanks for all the help.
Jim
Note an earlier post is where I started this conversion: HERE
I tried to adjust the PID and Ferror setting without much luck or understanding. So since the mill was running well before the conversion I went ahead with physical testing / aligning the mill. Now after having run several test cuts including a circle-diamond-square I am satisfied for now with the performance and will look ahead to finishing the conversion.
Thanks for all the help.
Jim
Note an earlier post is where I started this conversion: HERE
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