Swiss scientists taught quadrocopter to stay on the fly after losing rotor
The Institute of Dynamic Systems and Control in Zurich, whose specialists at the beginning of this year demonstrated quadrocopters juggling with the inverse pendulum, continue to amaze. They managed to develop an algorithm that allows the device to remain in the air and safely sit down after losing one of the propellers. The video shows the flight of the quadrotor, in which one of the screws was not fixed, and after a few seconds of the flight flew off the axis due to vibrations. This did not prevent him from quickly regaining control and making a relatively soft landing:
A conventional quad becomes almost unmanageable if it fails one of the engines or the rotor breaks. That is why so often used devices with six, eight or more rotors. For greater fault tolerance, one has to pay overweight. The new algorithm will eliminate the schemes with an excessive number of rotors, even in very demanding applications. The author of the development, Mark Muller, argues that the algorithm is able to control the flight even with the loss of a larger number of screws - if the thrust of the remaining rotors is not enough to continue the flight, it remains possible to at least reduce the speed of collision with the ground and choose a relatively safe landing ground, and not to fall anywhere - in the water or on people's heads.
Failsafe quadcopter differs from the usual only software part - all hardware can be standard. In addition to improving the reliability of conventional devices, the new control principle can be used to create new stable circuits with fewer than four rotors. An article describing the algorithm is now at the reviewing stage and will be published next year.
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Source: RoboHub .
A conventional quad becomes almost unmanageable if it fails one of the engines or the rotor breaks. That is why so often used devices with six, eight or more rotors. For greater fault tolerance, one has to pay overweight. The new algorithm will eliminate the schemes with an excessive number of rotors, even in very demanding applications. The author of the development, Mark Muller, argues that the algorithm is able to control the flight even with the loss of a larger number of screws - if the thrust of the remaining rotors is not enough to continue the flight, it remains possible to at least reduce the speed of collision with the ground and choose a relatively safe landing ground, and not to fall anywhere - in the water or on people's heads.
Failsafe quadcopter differs from the usual only software part - all hardware can be standard. In addition to improving the reliability of conventional devices, the new control principle can be used to create new stable circuits with fewer than four rotors. An article describing the algorithm is now at the reviewing stage and will be published next year.
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Source: RoboHub .
Source: https://habr.com/ru/post/204588/
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