h3n3/klipper
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

scripts: Added shaper tuning parameters to calibrate_shaper script

Browse Source 
The added parameters include square_corner_velocity, shaper frequencies
to optimize, input shapers to test, input shaper damping ratio and
damping ratios to test. All these options can be useful for fine-tuning
the input shapers when the default suggestions generated by the tuning
script are not optimal.

Also the `SHAPER_CALIBRATE` command was modified to pass some of these
parameters to the shaper tuning routine. Specifically, square corner
velocity and the maximum tested frequency are used to adjust shaper
tuning and maximum acceleration recommendations.

Signed-off-by: Dmitry Butyugin <dmbutyugin@google.com>
This commit is contained in:
Dmitry Butyugin
2024-02-08 03:06:48 +01:00
committed by KevinOConnor
parent 4f00f21991
commit 72b301a285
4 changed files with 145 additions and 25 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
docs/Measuring_Resonances.md
View File

@@ -662,6 +662,19 @@ The same notice applies to the input shaper
`max_accel` value after the auto-calibration, and the suggested acceleration
limits will not be applied automatically.
Keep in mind that the maximum acceleration without too much smoothing depends
on the `square_corner_velocity`. The general recommendation is not to change
it from its default value 5.0, and this is the value used by default by the
`calibrate_shaper.py` script. If you did change it though, you should inform
the script about it by passing `--square_corner_velocity=...` parameter, e.g.
```
~/klipper/scripts/calibrate_shaper.py /tmp/resonances_x_*.csv -o /tmp/shaper_calibrate_x.png --square_corner_velocity=10.0
```
so that it can calculate the maximum acceleration recommendations correctly.
Note that the `SHAPER_CALIBRATE` command already takes the configured
`square_corner_velocity` parameter into account, and there is no need
to specify it explicitly.
If you are doing a shaper re-calibration and the reported smoothing for the
suggested shaper configuration is almost the same as what you got during the
previous calibration, this step can be skipped.