Online dynamic balance adjusting device for propeller of stratospheric aerostat

Abstract

The invention discloses an on-line dynamic balance adjusting device for a propeller of a stratospheric aerostat. The on-line dynamic balance adjusting device comprises a vibration and rotating speed measuring mechanism used for detecting the rotating speed and the vibration form of a blade and a dynamic balance adjusting structure used for adjusting the dynamic balance of the blade. The dynamic balance adjusting structure comprises an analysis control module used for analyzing data collected by the vibration and rotating speed measuring mechanism and an adjusting module used for adjusting the dynamic balance of the paddle, the adjusting module comprises a balancing track arranged in the paddle, and a balancing block is connected to the balancing track in a sliding mode. The rotating speed and the vibration form of the blade are obtained in real time according to the vibration and rotating speed measuring mechanism, the dynamic balance adjusting structure analyzes data collected by the vibration and rotating speed measuring mechanism, a blade dynamic balance adjusting scheme is determined, and dynamic balance is carried out by adjusting the relative position of the balancing block and the blade. The dynamic balance degree range is large, the response speed is high, and the adjusting precision is high; and the dynamic balance of the propeller can be adjusted in real time in the working state of the propeller.

Description

technical field [0001] The invention relates to the technical field of aerostats, in particular to an online dynamic balance adjustment device for propellers of stratospheric aerostats. Background technique [0002] During the flight process of the stratospheric aerostat, controlling the aerostat to make it fly or maneuver according to the predetermined track is a very critical link. Among them, the use of propellers is of great significance for airships to achieve tasks such as wind-resistant flight and maneuvering flight. However, in the actual manufacturing process of the propeller, the shape and mass distribution of the blades cannot be absolutely consistent, and errors generated during the manufacturing process will cause the position of the center of mass of the propeller to not coincide with the center of rotation; The installation problem caused by it; during the rotation of the propeller, due to the fact that the aerodynamic resultant point of each blade deviates f...

AI Technical Summary

Problems solved by technology

However, in the actual manufacturing process of the propeller, the shape and mass distribution of the blades cannot be absolutely consistent, and errors generated during the manufacturing process will cause the position of the center of mass of the propeller to not coincide with the center of rotation; Installation problems caused by the propeller; during the rotation of the propeller, due to the aerodynamic resultant point of each blade deviates from the rotation center, dynamic imbalance occurs, so that the inertia axis does not coincide with the rotation axis

These problems will cause the propeller to vibrate during use and affect the performance of the propeller and the power motor

In addition, because the structural strength of the propellers used in the stratospheric aerostats is relatively low, dynamic balance adjustment needs to be carried out under the conditions of low pressure and low density, and the propellers used in the stratospheric aerostats are all large in size, so it is basically impossible to Dynamically balance the propeller

For the dynamic balance adjustment method of the stratospheric aerostat, an online dynamic balance adjustment method is required. The adjustment range of the existing online dynamic balance adjustment device is small, and it cannot meet the real-time elimination of the unbalance during operation.

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