Damping device of unmanned aerial vehicle hybrid power unit

Abstract

The invention discloses a damping device of an unmanned aerial vehicle hybrid power unit in the technical field of unmanned aerial vehicle equipment. The device comprises a loading platform, a hybridpower unit of the unmanned aerial vehicle is arranged on the loading platform, a first damping mechanism is arranged between the hybrid power unit and the loading platform, and a second damping mechanism is arranged between the loading platform and a vehicle body; the second damping mechanism comprises a passive damping assembly and a magnetic damping assembly; the first damping mechanism comprises a voice coil motor; a motor shaft of the voice coil motor is connected with a first bearing seat through a coupler, a first self-aligning bearing is arranged in the first bearing seat, a second bearing seat is arranged at the bottom of the hybrid power unit, a second self-aligning bearing is arranged in the second bearing seat, and a transversely-arranged supporting rod is installed between thefirst self-aligning bearing and the second self-aligning bearing. A supporting part for supporting the supporting rod is arranged at the lower end of the supporting rod and is close to the first self-aligning bearing. The device has the advantages of being compact in structural design and remarkable in damping effects.

Description

technical field [0001] The invention relates to the technical field of unmanned aerial vehicle equipment, in particular to a vibration damping device for a hybrid power unit of an unmanned aerial vehicle. Background technique [0002] Small multi-rotor drones refer to drones with an empty mass of ≤15kg and ≥4kg, and a maximum take-off mass of ≤25kg and ≥7kg, driven by electricity, with vertical take-off and landing, hovering in the air, and low power coupling. Fast response and other advantages. It can be used in aviation forestry and fire detection and other fields. The battery life of the small multi-rotor UAVs currently on sale is basically 20 minutes, which is far from enough for the rich functions of UAVs. For example, the traffic in the northeast forest area is inconvenient, and the patrol operation radius is 100-300km. The endurance of the current small multi-rotor drones cannot meet the operation requirements at all. The main factors affecting battery life are fli...

AI Technical Summary

Problems solved by technology

3. The loading space of the UAV is limited and the battery life is affected by the flight weight. The volume and weight of the vibration reduction device should be as small as possible

[0005] 1. There is no design for the characteristic of "drone is extremely sensitive to vibration", the vibration reduction method is single, and the vibration reduction effect needs to be verified

[0006] 2. The engine has a large amplitude and a fast vibration speed. The motor is directly connected to the vibration source as the actuator of active vibration reduction. Therefore, the response speed of the motor needs to be fast. This not only has higher requirements for the motor, but also increases the cost. increase the complexity of the control system

[0007] 3. The structural design is not compact, the space utilization rate is not high, and the mass of the vibration damping device is large, which increases the weight of the drone and reduces the load-bearing capacity of the drone

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