Low-altitude airship flight control system and flight control method thereof

Abstract

The invention discloses a low-altitude airship flight control system and a flight control method thereof, belonging to the technical field of aircraft control. The system comprises a front-end data acquisition and processing subsystem, a navigation and flight control and state monitoring subsystem, a rear-end driving execution module subsystem and a flight application subsystem, wherein the front-end data acquisition and processing subsystem is connected with sensing equipment and used for transmitting acquired flight environment and airship state information, the navigation and flight control and state monitoring subsystem is connected with an airship navigation sensor and the rear-end driving execution module subsystem and used for transmitting navigation and flight control information,the rear-end driving execution module subsystem is connected with an airship execution controller and used for transmitting empennage steering engine pulse width modulation signals, propelling rotating speed control voltages and valve blower switch information, and the flight application subsystem is connected with a ground station and used for transmitting flight control instructions and telemetry parameter information through a data radio. The low-altitude airship flight control system disclosed in the invention is suitable for various civil and military systems.

Description

technical field [0001] The invention relates to a system and method in the technical field of aircraft control, in particular to a flight control system and a flight control method for a low-altitude airship at a height of 1 km. Background technique [0002] The low-altitude airship has the advantages of long time in the air, good stability, easy control, and large equipment load. It has been favored by the military and civilian markets. At present, it is mainly used in monitoring, aerial photography, advertising, and satellite relay. For example, in 1996 The Skyship600 airship was used for surveillance in the Atlanta Olympic Games. In 2003, the UAVRS II low-altitude unmanned airship developed by the Chinese Academy of Surveying and Mapping was used for remote sensing monitoring. However, in practical applications, most airships require manned or ground operators to operate them remotely, which greatly limits the flight time and flight environment of the airship, and increas...

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Problems solved by technology

[0003] To solve this problem, Beijing University of Aeronautics and Astronautics developed an iFLY40 autopilot relying on Beijing Bochuang Xingsheng Robot Co., Ltd., which uses dual ARM7TDMI core CPUs, separates mission navigation and flight control calculations, and uses GPS (Global Position System) and IMU (Inertial Measurement Unit) navigation data integrated navigation system, but its shortcoming is that this system is mainly aimed at unmanned aerial vehicle systems, and such flight control computer systems are also based on the PC104 module developed by Huang Yimin, a researcher at Nanjing University of Aeronautics and Astronautics. The miniaturized flight control computer, and this type of computer rarely considers the particularity of unmanned airships. For example, the flight control computer does not design the interface of the environmental control system including blowers and valves. Deflate to adjust the pressure difference of the airbag to control the height of the airship, there is a fatal hidden danger

In addition, the propulsion system of an airship usually has more than one, generally including 2 side propulsion (vector control), sometimes including tail propulsion, and the empennage has 4 control surfaces, including 2 elevator surfaces and 2 rudder surfaces. It is difficult for the unmanned aerial vehicle flight control computer to realize the effective control of the unmanned airship

In addition, there are some low-end airship remote control systems on ...

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