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A joint optimization method and system for flight speed and trajectory

A technology of flight speed and joint optimization, applied in general control systems, control/regulation systems, and simultaneous control of multiple variables.

Active Publication Date: 2021-04-20
NANTONG UNIVERSITY
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Problems solved by technology

However, when the UAV flies on a straight track, the communication system will have an upper limit of information throughput, which means that the straight track is not suitable for a large amount of data transmission; when the UAV flies on a circular track, if the source node The distance between the destination node and the destination node is long, the information throughput of the system will be poor

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  • A joint optimization method and system for flight speed and trajectory
  • A joint optimization method and system for flight speed and trajectory
  • A joint optimization method and system for flight speed and trajectory

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Embodiment approach

[0183] As an embodiment, the method of the present invention also includes:

[0184] Step S9: Calculate the minimum flight total energy consumption according to the optimal flight parameters, the specific formula is:

[0185]

[0186] Among them, E is the minimum total flight energy consumption, g is the acceleration of gravity, c 1 =ρC D0 S / 2 and c 2 = 2W 2 / [(πe 0 A R )ρS], ρ means air density, C D0 Indicates zero-lift drag coefficient, S indicates wing area, e 0 is the wingspan efficiency, W represents the overall weight of the UAV, and A R represents the aspect ratio of the drone's wing, and are the optimal flight radius, optimal flight speed, and optimal flight duration of the UAV in mode 1, respectively, and are the optimal flight speed and optimal flight time of UAV flying in mode 2, respectively, and are the optimal flight radius, optimal flight speed, and optimal flight duration of UAV flying in mode 3, respectively.

[0187]Step S1: Initialize,...

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Abstract

The invention discloses a method and system for joint optimization of flight speed and trajectory. The method includes: determining the optimal number of flight circles, the optimal flight radius and the optimal flight speed of the UAV in mode 1, and the optimal flight speed of the UAV in mode 1. Calculate the number of received information bits and the difference; judge whether the difference is greater than the accuracy; if so, make the number of information bits received by the UAV in mode 1 equal to the number of information bits received by the UAV in mode 1, Re-determine the optimal flight radius and optimal flight speed of the drone in mode 1; otherwise, determine the optimal flight duration of the drone in mode 1, and the optimal flight duration of the drone in mode 3. The optimal flight speed and optimal flight time of drone flight in mode 2; the flight of UAV is controlled according to the optimal flight parameters. The invention jointly adjusts the flight speed and flight track of the UAV relay node according to the number of information bits to be transmitted by the source node and the distance between the source node and the destination node.

Description

technical field [0001] The invention relates to the technical field of unmanned aerial vehicle control, in particular to a joint optimization method and system for flight speed and trajectory. Background technique [0002] In recent years, UAV cooperative communication technology has become a research hotspot in the field of wireless communication. Compared with traditional ground communication, UAV cooperative communication is easy to realize on-demand distribution, which is more cost-effective; UAV is highly mobile, so it is more flexible and quick to deploy; UAV and ground terminal Most of the channel links are line-of-sight links, which can provide a better channel environment. Therefore, drones will play an extremely important role in the future wireless communication field, and its applications mainly include: (1) as a temporary base station; (2) as a mobile relay; (3) for the Internet of Things. [0003] At present, a large number of literatures have studied the opt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D27/02G05B13/04
CPCG05B13/042G05D27/02
Inventor 吉晓东钱冲李文华
Owner NANTONG UNIVERSITY
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