Hover instability

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harriswang
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Joined: Sat Oct 27, 2018 12:36 pm

Hover instability

Post by harriswang » Fri Dec 28, 2018 2:44 pm

Autonomous hovering is performed using the optitrack motion capture system and the ros operating system, but the aircraft flies to the Y-axis or Z-axis side after take-off, which is a specific problem. thank you



tobias
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Location: Sweden

Re: Hover instability

Post by tobias » Fri Jan 04, 2019 1:31 pm

It could be that the crazyflie doesn't have any yaw information. It probably have to be started in the right direction for it to work properly.

harriswang
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Re: Hover instability

Post by harriswang » Thu Mar 07, 2019 1:25 am

Hello, we have used a lot of aircraft to carry out experiments, but one aircraft is able to complete the stable hovering mission. The only difference between this aircraft is that the marking points recognized by the motion capture system are placed on the aircraft differently, is it not? Does the position of the center of mass affect the experiment? Thank you

arnaud
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Re: Hover instability

Post by arnaud » Wed Mar 13, 2019 11:50 am

The center of mass will off course affect performance, but it should not make the Crazyflie unable to hold a position setpoint unless you have a big out of center weight.

From your problem description it seems like the tracking is not working properly for the affected Crazyflies or that the position estimate is not sent correctly to the affected Crazyflie.

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