I designed a 13kg (maximum take-off weight) hexa copter using pixhawk, the configuration of this copter is as follows:

1. T-motor U7 V2 kv420 motors
2. 1855 propellers
3. 25mm carbon fiber tube
4. 2mm carbon fiber board
5. 3D printed anti-vibration platform with dampeners rotated 45°
6. 6S 16000mah battery
7. Pxihawk with AC V3.3

At first, I built this copter without any extra pillars between the top board and the bottom board except the connectors on the tube,and the pixhawk suffered heavy vibration with gigantic glitches, the average vibration level of AccZ can reach -20m/(s^2) to -7m/(s^2), the glitch can reach -29m/(s^2) to +3m/(s^2). The copter can hardly be controlled even in stabilize mode.

3691223161?profile=original

3691223112?profile=original

3691223017?profile=original

Then, I added extra pillars between the top board and the bottom board, the average vibration level of AccZ can reach -7m/(s^2) to -14m/(s^2) which is acceptable by APM, but the glitch can still reach -39m/(s^2) to -5m/(s^2). The copter can be smoothly controlled in stabilize mode.

3691223173?profile=original

3691223038?profile=original

I wonder:

1. how glitch in my frame above occured?
2. how can I eliminate the glitch?
3. which part of my copter can be improved and how can I improve it?

Thanks in advance! The log attached below.

xiazibin

 

before pillar installed.BIN

after pillar installed.BIN

You need to be a member of diydrones to add comments!

Join diydrones

Email me when people reply –

Replies

  • sorry to hear your having issues ! how are you mounting pixhawk? folding hard wear can cause big vibrations , as well as un balanced props and motors  

This reply was deleted.

Activity

DIY Robocars via Twitter
RT @SahikaGenc: AWS DeepRacer & Hot Wheels Track https://youtu.be/4H0Ei07RdR4 via @YouTube
Sep 14
DIY Robocars via Twitter
Sep 8
DIY Robocars via Twitter
RT @davsca1: We are releasing the code of our Fisher Information Field, the first dedicated map for perception-aware planning that is >10x…
Sep 8
DIY Robocars via Twitter
RT @SmallpixelCar: How this works: 1)object detection to find cones in single camera image, 30 frames/sec on @NVIDIAEmbedded Xavier. 2)comp…
Sep 8
DIY Robocars via Twitter
RT @SmallpixelCar: Use two color cones to guide the robocar. No map needed, on onsite training needed. Just place the cones and it will fol…
Sep 7
DIY Robocars via Twitter
Sep 7
DIY Robocars via Twitter
RT @roboton_io: Great to see http://roboton.io running at 60fps on the cheapest #chromebook we could find! #edtech #robotics #educat…
Sep 3
DIY Robocars via Twitter
RT @openmvcam: Crazy in-depth article about using the OpenMV Cam for Astrophotography: https://github.com/frank26080115/OpemMV-Astrophotography-Gear https://t.co/BPoK9QDEwS
Sep 3
DIY Robocars via Twitter
RT @openmvcam: Hi folks, it's finally here! Our first draft of our Arduino Interface Library is out! It works over SoftwareSerial, Hardware…
Sep 3
DIY Robocars via Twitter
RT @chr1sa: Please let them have an open API. This would be perfect for @DIYRobocars races https://twitter.com/NintendoAmerica/status/1301513099707658246
Sep 3
DIY Robocars via Twitter
RT @SmallpixelCar: Lanenet pretty much used all my GPU power on @NVIDIAEmbedded Xavier since I optimized with tensorRT. I need to run anoth…
Sep 3
xemone liked Max Gilson's profile
Aug 31
DIY Robocars via Twitter
RT @LyftLevel5: Our @kaggle competition on Motion Prediction for Autonomous Vehicles is now live! Experiment with the largest-ever self-dri…
Aug 24
DIY Robocars via Twitter
RT @chr1sa: Our next @DIYRobocars virtual AI car race will be on Sept 26th. Sign up here https://www.meetup.com/DIYRobocars/events/272786977/ https://t.co/UENKGSOWO8
Aug 24
DIY Robocars via Twitter
New ready-to-run @NVIDIAEmbedded JetRacer car from Waveshare. Perfect for the next @diyrobocars race as soon as we… https://twitter.com/i/web/status/1297960223013867520
Aug 24
DIY Drones via Twitter
RT @chr1sa: The US government just approved 5 US-made drones for purchase, all based on the @Dronecode @PX4Autopilot standard. Great news f…
Aug 20
More…