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Calibration Cornering Jerk Test + Generic interpolator + Fix (#10962)

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Ian Bassi
2025-10-26 09:44:19 -03:00
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17
doc/print_settings/speed/speed_settings_jerk_xy.md
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@@ -5,8 +5,15 @@
## Cornering Control Types
- **Jerk**: Traditional method, sets a maximum speed for direction changes.
- Klipper: [Square corner velocity](https://www.klipper3d.org/Config_Reference.html#printer)
- RepRapFirmware: [Maximum instantaneous speed changes](https://docs.duet3d.com/User_manual/Reference/Gcodes#m566-set-allowable-instantaneous-speed-change)
- Marlin 2: [Classic Jerk](https://marlinfw.org/docs/configuration/configuration.html#jerk-) (deprecated in favor of [Junction Deviation](https://marlinfw.org/docs/configuration/configuration.html#junction-deviation-)) but can still be used.
- Marlin Legacy: [Classic Jerk](https://marlinfw.org/docs/configuration/configuration.html#jerk-).
- **[Junction Deviation](#junction-deviation)**: Modern method, calculates cornering speed based on acceleration and speed.
> [!TIP]
> Calibrate your Cornering Values using the [Cornering Calibration guide](cornering-calib).
## Key Effects
- **Corner Control**: Lower values = smoother corners, better quality. Higher values = faster cornering, potential artifacts
@@ -16,7 +23,7 @@
This setting overrides firmware jerk values when different motion types need specific settings. Orca limits jerk to not exceed the Printer's Motion Ability settings.
> [!TIP]
> Jerk can work in conjunction with [Pressure Advance](pressure-advance-calib), [Adaptive Pressure Advance](adaptive-pressure-advance-calib), and [Input Shaping](input-shaping-calib) to optimize print quality and speed.
> Jerk can work in conjunction with [Pressure Advance](pressure-advance-calib), [Adaptive Pressure Advance](adaptive-pressure-advance-calib), and [Input Shaping](input-shaping-calib) to optimize print quality and speed.
> It's recommended to follow the [calibration guide](calibration) order for best results.
- [Cornering Control Types](#cornering-control-types)
@@ -64,12 +71,14 @@ Jerk for travel printing. This is usually set to a higher value than infill to r
## Junction Deviation
Alternative to Jerk, Junction Deviation is the default method for controlling cornering speed in MarlinFW (Marlin2) printers.
Alternative to Jerk, Junction Deviation is the default method for controlling cornering speed in Marlin 2 printers.
Higher values result in more aggressive cornering speeds, while lower values produce smoother, more controlled cornering.
This value will **only be overwritten** if it is lower than the Junction Deviation value set in Printer settings > Motion ability. If it is higher, the value configured in Motion ability will be used.
> [!NOTE]
> Classic Jerk can still be used in Marlin 2, but it is deprecated in favor of Junction Deviation.
> If your printer uses Classic Jerk, you need to set your Junction Deviation to `0` to enable the use of Classic Jerk.
To Calculate your Junction Deviation value, please refer to the [Junction Deviation Calibration guide](cornering-calib#junction-deviation).
This value will **only be overwritten** if it is lower than the Junction Deviation value set in Printer settings > Motion ability. If it is higher, the value configured in Motion ability will be used.
```math
JD = 0,4 \cdot \frac{\text{Jerk}^2}{\text{Accel.}}