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Initial Tuning
Petri Mattila edited this page Apr 17, 2024
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- Set all D-terms to 0
- Set P-term on Pitch and Roll to a low value, like 10
- Decrease I-term on on all axis to 50%
- Keep FF as it is on pitch and roll
- Set FF on yaw to 0
You should be able to fly this, but it won't have much stabilization. Just direct stick to swash control, like a heli without FBL.
- Tune the FF terms on pitch and roll. Try to make the gyro rate to match setpoint as closely as possible. You will need to take a few logs and check the results, and adjust the values each time.
- If the tail is causing trouble, you can increase the yaw I-term a little bit, until it's holding.
- Start increasing the I-term further, until it is holding well in hover. Don't worry about any bounce after movements at this point
- If it starts oscillation, decrease the I-term. Usually the I-term oscilaltion is rather slow
- Once the I-term is about right, start increasing the P-term. This will remove the tail bounce
- If there is too much P-term, you will see faster oscillation. If this happens, back off 25% or more
- Servo driven tail: don't add any D-term yet
- Motor driven tail: start with a D-term of 50% P-term
- You shouldn't need any FF on yaw
- Start increasing the I-term on Pitch & Roll, until it feels stable
- Once stable in hover, start increasing P-terms
- Increase until you get slight oscillation, then back of 25%
- Increase I-term until it holds attitude in wind and large collective and lateral moves.
THIS SHOULD BE YOUR INITIAL TUNE
After this you can really start pushing it and testing different flight moves, and fine tuning.
Good luck Jim.
This oscillation on the Pitch axis is because the I-gain is too high. Decrease the I-term.
- Overview
- Back-up and restore
- Servo Wiring and adapter boards
- Custom Defaults
- Custom defaults remapping spreadsheet
- Receiver Setup
- Gyro & Board Orientation
- Voltage & Current Sensors
- ESC Setup
- Motor Setup
- Servos Setup
- Mixer
- Modes
- RPM Filters
- Filter Setup
- Governor Setup
- Adjustments
- Introduction
- Initial Tuning
- Governor Tuning
- Feed forward Tuning
- Tail Tuning
- Tuning on the Field with Lua Scripts
- Blackbox Logging
- Working with Blackbox Explorer
- K110 with Play F4
- Profile (Bank) switching example
- Using stability modes (6G)
- Adding OSD support for FPV Setups