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docs: Improve max_accel documentation in Config_Reference.md 

Note that the max_accel parameter is the actual acceleration used in
most movements.

Note that the accel/velocity limits can be changed using the
SET_VELOCITY_LIMIT command.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2023-12-03 17:56:22 -05:00
parent 795ce490a0
commit 05d5451347
2 changed files with 18 additions and 7 deletions
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18
docs/Config_Reference.md
View File

@ -88,16 +88,22 @@ kinematics:
# deltesian, polar, winch, or none. This parameter must be specified.
max_velocity:
# Maximum velocity (in mm/s) of the toolhead (relative to the
# print). This parameter must be specified.
# print). This value may be changed at runtime using the
# SET_VELOCITY_LIMIT command. This parameter must be specified.
max_accel:
# Maximum acceleration (in mm/s^2) of the toolhead (relative to the
# print). This parameter must be specified.
# print). Although this parameter is described as a "maximum"
# acceleration, in practice most moves that accelerate or decelerate
# will do so at the rate specified here. The value specified here
# may be changed at runtime using the SET_VELOCITY_LIMIT command.
# This parameter must be specified.
#max_accel_to_decel:
# A pseudo acceleration (in mm/s^2) controlling how fast the
# toolhead may go from acceleration to deceleration. It is used to
# reduce the top speed of short zig-zag moves (and thus reduce
# printer vibration from these moves). The default is half of
# max_accel.
# printer vibration from these moves). The value specified here may
# be changed at runtime using the SET_VELOCITY_LIMIT command. The
# default is half of max_accel.
#square_corner_velocity: 5.0
# The maximum velocity (in mm/s) that the toolhead may travel a 90
# degree corner at. A non-zero value can reduce changes in extruder
@ -107,7 +113,9 @@ max_accel:
# larger than 90 degrees will have a higher cornering velocity while
# corners with angles less than 90 degrees will have a lower
# cornering velocity. If this is set to zero then the toolhead will
# decelerate to zero at each corner. The default is 5mm/s.
# decelerate to zero at each corner. The value specified here may be
# changed at runtime using the SET_VELOCITY_LIMIT command. The
# default is 5mm/s.
```
### [stepper]

7
docs/G-Codes.md
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@ -1281,8 +1281,11 @@ The toolhead module is automatically loaded.
#### SET_VELOCITY_LIMIT
`SET_VELOCITY_LIMIT [VELOCITY=<value>] [ACCEL=<value>]
[ACCEL_TO_DECEL=<value>] [SQUARE_CORNER_VELOCITY=<value>]`: Modify the
printer's velocity limits.
[ACCEL_TO_DECEL=<value>] [SQUARE_CORNER_VELOCITY=<value>]`: This
command can alter the velocity limits that were specified in the
printer config file. See the
[printer config section](Config_Reference.md#printer) for a
description of each parameter.
### [tuning_tower]