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toolhead: Replace max_accel_to_decel with minimum_cruise_ratio

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The user facing max_accel_to_decel setting is complicated and
confusing.  Replace it with a new minimum_cruise_ratio parameter.
Internally this user-facing parameter will calculate the existing
low-level "accel_to_decel" mechanism.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor
2023-12-03 18:50:44 -05:00
parent 18de421c4a
commit 0105aa330f
10 changed files with 85 additions and 50 deletions
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10
docs/Resonance_Compensation.md
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@@ -48,8 +48,8 @@ First, measure the **ringing frequency**.
to 5.0. It is not advised to increase it when using input shaper
because it can cause more smoothing in parts - it is better to use
higher acceleration value instead.
2. Increase `max_accel_to_decel` by issuing the following command:
`SET_VELOCITY_LIMIT ACCEL_TO_DECEL=7000`
2. Disable the `miminum_cruise_ratio` feature by issuing the following
command: `SET_VELOCITY_LIMIT MINIMUM_CRUISE_RATIO=0`
3. Disable Pressure Advance: `SET_PRESSURE_ADVANCE ADVANCE=0`
4. If you have already added `[input_shaper]` section to the printer.cfg,
execute `SET_INPUT_SHAPER SHAPER_FREQ_X=0 SHAPER_FREQ_Y=0` command. If you
@@ -149,7 +149,7 @@ a few other related parameters.
Print the ringing test model as follows:
1. Restart the firmware: `RESTART`
2. Prepare for test: `SET_VELOCITY_LIMIT ACCEL_TO_DECEL=7000`
2. Prepare for test: `SET_VELOCITY_LIMIT MINIMUM_CRUISE_RATIO=0`
3. Disable Pressure Advance: `SET_PRESSURE_ADVANCE ADVANCE=0`
4. Execute: `SET_INPUT_SHAPER SHAPER_TYPE=MZV`
5. Execute the command:
@@ -270,7 +270,7 @@ frequencies after enabling [input_shaper], this section will not help with that.
Assuming that you have sliced the ringing model with suggested
parameters, complete the following steps for each of the axes X and Y:
1. Prepare for test: `SET_VELOCITY_LIMIT ACCEL_TO_DECEL=7000`
1. Prepare for test: `SET_VELOCITY_LIMIT MINIMUM_CRUISE_RATIO=0`
2. Make sure Pressure Advance is disabled: `SET_PRESSURE_ADVANCE ADVANCE=0`
3. Execute: `SET_INPUT_SHAPER SHAPER_TYPE=ZV`
4. From the existing ringing test model with your chosen input shaper select
@@ -331,7 +331,7 @@ with suggested parameters, print the test model 3 times as
follows. First time, prior to printing, run
1. `RESTART`
2. `SET_VELOCITY_LIMIT ACCEL_TO_DECEL=7000`
2. `SET_VELOCITY_LIMIT MINIMUM_CRUISE_RATIO=0`
3. `SET_PRESSURE_ADVANCE ADVANCE=0`
4. `SET_INPUT_SHAPER SHAPER_TYPE=2HUMP_EI SHAPER_FREQ_X=60 SHAPER_FREQ_Y=60`
5. `TUNING_TOWER COMMAND=SET_VELOCITY_LIMIT PARAMETER=ACCEL START=1500 STEP_DELTA=500 STEP_HEIGHT=5`