Unmanned helicopter automatic landing method based on laser guidance
An unmanned helicopter, automatic landing technology, applied in non-electric variable control, position/direction control, instruments and other directions, can solve the problem of the helicopter being unable to move, and achieve the effect of wide range of use and strong reliability
Inactive Publication Date: 2011-02-16
TSINGHUA UNIV
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Problems solved by technology
In addition, since the signal cloth is usually laid before the landing of the helicopter, it cannot be moved during the landing of the helicopter
Therefore, it is impossible to change the landing position of the unmanned helicopter in real time according to the actual flight situation
Therefore, both of the above two methods have a certain degree of insufficiency.
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[0010] In Figure 1, the operator irradiates the laser to the desired landing point through the laser transmitter. The unmanned helicopter captures the laser spot irradiated by the laser transmitter on the ground through the onboard laser capture device. The flight control system manipulates the helicopter to track the laser spot according to the output signal of the laser capture device. Thus, under the control of the flight control system, the helicopter gradually approaches the laser spot on the ground according to the instructions and guidance of the laser transmitter, and at the same time descends the altitude until the unmanned helicopter finally completes automatic landing.
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The invention relates to an unmanned helicopter automatic landing method based on laser guidance, belonging to the field of unmanned plane flight control. The method is characterized in that a laser transmitter, an airborne laser acquisition device and a flight control system are provided, wherein the laser transmitter is used for landing instructions, the air-borne laser acquisition device is used for acquiring laser spots projected to the ground by the laser transmitter, the flight control system is used for controlling helicopter tracing laser spots according to output signals of the laser acquisition device, so that the unmanned helicopter can gradually approach to the laser spots on the ground according to the instructions and guidance of the laser transmitter and descend to lower height at the same time until automatic landing is completed. According to the method, instructive accuracy of laser can be employed to accurately and conveniently guide the unmanned helicopter to automatically land.
Description
technical field [0001] The invention is a method for instructing and guiding the automatic landing of the unmanned helicopter, which can accurately and conveniently guide the unmanned helicopter to complete fixed-point landing. Mainly used in unmanned helicopters, aerospace, robotics and other technical fields. Background technique [0002] There are usually two methods for fixed-point landing of unmanned helicopters. [0003] One is to realize fixed-point landing under the instructions of the GPS (Global Positioning System) global positioning system. Using GPS to guide the helicopter to land is the most common method at present. However, due to the poor penetration of GPS signals, it is extremely vulnerable to the influence of ground buildings and bushes and fails. In addition, GPS is controlled by the US military and will fail under special circumstances. Therefore, there are disadvantages and hidden dangers in using GPS to guide the helicopter to land. [0004] The s...
Claims
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IPC IPC(8): G05D1/00
Inventor 王冠林朱纪洪
Owner TSINGHUA UNIV
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