High vibration in Z - Mission Planner - ArduCopter User Group

Don Roberts November 15, 2016 at 5:55pm

I have a Tarot 960 with the retractable gear and I have noticed my z vibration is relatively larger than my x or y(x and x are 1~2).

I think mine might be related to the gear as it is not as tight a unit as i would like. It has a little play in it and that may cause some additional vibration.

Do yo have any items that dangle; landing gear, gimbal, etc that could cause additional vibration?

Cala November 13, 2016 at 4:20pm

Here you can find many info about vibrations and how to solve, I have that issue on my first quad for many time and it was a pain in windy days.

http://diydrones.com/forum/topics/vibration-isolation-and-dampening...

Sorry I´m not an expert to give you a technical explanation but vibrations, specially z affects sensors, I read from experts and developers trying to solve my issue in the past; you can find devs here to better answer http://discuss.ardupilot.org/

Clifton Hipsher November 13, 2016 at 3:52pm

Cala wrote:

"z axis is the most important not to have troubles and affects baro so, with a Lidar you solve altitude hold but no vibrations, try to solve them or you are going to be always flying near limit to crash."

Would you care to substantiate that statement?

Cala November 13, 2016 at 3:01pm

yes,

z axis is the most important not to have troubles and affects baro so, with a Lidar you solve altitude hold but no vibrations, try to solve them or you are going to be always flying near limit to crash.

Clifton Hipsher November 13, 2016 at 1:54pm

As I understand it, the Z axis measures vertical accelerations...

Russ November 13, 2016 at 1:21pm

Thank you for your response Clifton, I did some upgrades: a Lidar and the new firmware 3.4.1 and it helped a lot. I know now that the vibration was within limits, but now the copter is more smooth.

Can you tell me if the Z vibration is yaw or thrust?

Thanks!

Clifton Hipsher said:

The vibrations are within limits:

http://ardupilot.org/copter/docs/common-measuring-vibration.html

To get a better idea of the actual levels you need to review the log, and in the browser select Vibrations 3.3, right click in the graph pane and select Show Point Values. Hover the mouse along the plot and you will see the line number followed by the value for that point on the plot.

Clifton Hipsher November 4, 2016 at 3:31am

The vibrations are within limits:

http://ardupilot.org/copter/docs/common-measuring-vibration.html

To get a better idea of the actual levels you need to review the log, and in the browser select Vibrations 3.3, right click in the graph pane and select Show Point Values. Hover the mouse along the plot and you will see the line number followed by the value for that point on the plot.