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added proper management of the vibration test accels

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This commit is contained in:
Félix Boisselier
2023-11-27 17:07:20 +01:00
parent 0f7fa66af4
commit f95c55230b
2 changed files with 16 additions and 30 deletions
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45
K-ShakeTune/IS_vibrations_measurements.cfg
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@@ -2,40 +2,17 @@
###### VIBRATIONS AND SPEED OPTIMIZATIONS ######
################################################
# Written by Frix_x#0161 #
# @version: 2.1
# @version: 2.2
# CHANGELOG:
# v2.2: allow custom accel values and set sane defaults (3k) to avoid using very high accels that produce bad results
# v2.1: allow decimal entries for speed and increment and added the E axis as an option to be neasured
# v2.0: added the possibility to measure mutliple axis
# v1.0: first speed and vibrations optimization macro
### What is it ? ###
# This macro helps you to identify the speed settings that exacerbate the vibrations of the machine (ie. where the frame resonate badly).
# It also helps to find the clean speed ranges where the machine is silent.
# I had some strong vibrations at very specific speeds on my machine (52mm/s for example) and I wanted to find all these problematic speeds
# to avoid them in my slicer profile and finally get the silent machine I was dreaming!
# It works by moving the toolhead at different speed settings while recording the vibrations using the ADXL chip. Then the macro call a custom script
# to compute and find the best speed settings. The results can be found in your config folder using Fluidd/Mainsail file manager.
# The goal is to make it easy to set, share and use it.
# This macro is parametric and most of the values can be adjusted with their respective input parameters.
# It can be called without any parameters - in which case the default values would be used - or with any combination of parameters as desired.
# Usage:
# 1. DO YOUR INPUT SHAPER CALIBRATION FIRST !!! This macro should not be used before as it would be useless and the results invalid.
# 2. Call the VIBRATIONS_CALIBRATION macro with the speed range you want to measure (default 20 to 200mm/s with 2mm/s increment).
# Be carefull about the Z_HEIGHT variable that default to 20mm -> if your ADXL is under the nozzle, increase it to avoid a crash of the ADXL on the bed of the machine.
# 3. Wait for it to finish all the measurement and compute the graph. Then look at it in the results folder.
[gcode_macro VIBRATIONS_CALIBRATION]
gcode:
#
# PARAMETERS
#
{% set size = params.SIZE|default(60)|int %} # size of the area where the movements are done
{% set direction = params.DIRECTION|default('XY') %} # can be set to either XY, AB, ABXY, A, B, X, Y, Z
{% set z_height = params.Z_HEIGHT|default(20)|int %} # z height to put the toolhead before starting the movements
@@ -45,16 +22,18 @@ gcode:
{% set max_speed = params.MAX_SPEED|default(200)|float * 60 %} # maximum feedrate for the movements
{% set speed_increment = params.SPEED_INCREMENT|default(2)|float * 60 %} # feedrate increment between each move
{% set feedrate_travel = params.TRAVEL_SPEED|default(200)|int * 60 %} # travel feedrate between moves
{% set accel = params.ACCEL|default(config.printer["max_accel"])|float %}
{% set accel = params.ACCEL|default(3000)|int %} # accel value used to move on the pattern
{% set accel_chip = params.ACCEL_CHIP|default("adxl345") %} # ADXL chip name in the config
#
# COMPUTED VALUES
#
{% set mid_x = printer.toolhead.axis_maximum.x|float / 2 %}
{% set mid_y = printer.toolhead.axis_maximum.y|float / 2 %}
{% set nb_samples = ((max_speed - min_speed) / speed_increment + 1) | int %}
{% set accel = [accel, printer.configfile.settings.printer.max_accel]|min %}
{% set old_accel = printer.toolhead.max_accel %}
{% set old_accel_to_decel = printer.toolhead.max_accel_to_decel %}
{% set old_sqv = printer.toolhead.square_corner_velocity %}
{% set direction_factor = {
'XY' : {
'start' : {'x': -0.5, 'y': -0.5 },
@@ -157,7 +136,10 @@ gcode:
M83
G90
SET_ACCEL_LIMIT ACCEL={accel} ACCEL_TO_DECEL={accel}
# Set the wanted acceleration values (not too high to avoid oscillation, not too low to be able to reach constant speed on each segments)
SET_VELOCITY_LIMIT ACCEL={accel} ACCEL_TO_DECEL={accel} SQUARE_CORNER_VELOCITY={[(accel / 1000), 5.0]|max}
# Going to the start position
G1 Z{z_height}
G1 X{mid_x + (size * direction_factor[direction].start.x) } Y{mid_y + (size * direction_factor[direction].start.y)} F{feedrate_travel}
@@ -188,4 +170,7 @@ gcode:
{% endif %}
RUN_SHELL_COMMAND CMD=plot_graph PARAMS="VIBRATIONS {direction}"
# Restore the previous acceleration values
SET_VELOCITY_LIMIT ACCEL={old_accel} ACCEL_TO_DECEL={old_accel_to_decel} SQUARE_CORNER_VELOCITY={old_sqv}
RESTORE_GCODE_STATE NAME=STATE_VIBRATIONS_CALIBRATION

1
docs/macros/vibrations_tuning.md
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@@ -17,6 +17,7 @@ Call the `VIBRATIONS_CALIBRATION` macro with the direction and speed range you w
|DIRECTION|"XY"|direction vector where you want to do the measurements. Can be set to either "XY", "AB", "ABXY", "A", "B", "X", "Y", "Z", "E"|
|Z_HEIGHT|20|z height to put the toolhead before starting the movements. Be careful, if your ADXL is under the nozzle, increase it to avoid a crash of the ADXL on the bed of the machine|
|VERBOSE|1|Wether to log the current speed in the console|
|ACCEL|3000 (or max printer accel)|accel in mm/s^2 used for all the moves. Try to keep it relatively low to avoid bad oscillations that affect the measurements, but but high enough to reach constant speed for >~70% of the segments|
|MIN_SPEED|20|minimum speed of the toolhead in mm/s for the movements|
|MAX_SPEED|200|maximum speed of the toolhead in mm/s for the movements|
|SPEED_INCREMENT|2|speed increments of the toolhead in mm/s between every movements|