Adaptive flying path prediction method of aircraft auto ground collision avoidance system

An anti-collision system and flight trajectory technology, applied in the field of aviation control, can solve problems such as affecting trajectory prediction accuracy, and achieve the effects of improving operational confidence, reducing operational load, and ensuring flight safety.

Active Publication Date: 2019-06-18
SHANGHAI AVIATION ELECTRIC
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Problems solved by technology

[0005] However, in the process of flight trajectory prediction and calculation, due to the cumulative error of nonlinear equation solution, unmodeled dynamic uncertainty and external disturbance torque, atmospheric environm

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  • Adaptive flying path prediction method of aircraft auto ground collision avoidance system
  • Adaptive flying path prediction method of aircraft auto ground collision avoidance system
  • Adaptive flying path prediction method of aircraft auto ground collision avoidance system

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Embodiment Construction

[0039] The technical solutions of the present invention are described below through preferred embodiments, but the following embodiments cannot limit the protection scope of the present invention.

[0040]The self-adaptive flight trajectory prediction method provided by the present invention is embedded in any device with data collection, processing, output and storage functions on the aircraft in the form of software, such as ground proximity warning equipment, flight control system, flight management system , Integrated environmental monitoring system and other avionics equipment. In addition, the adaptive flight trajectory prediction method provided by the present invention can be applied not only to fighter jets, but also to aircrafts such as unmanned aerial vehicles that have near-ground collision protection requirements.

[0041] attached figure 1 It is a block diagram of a typical aircraft automatic ground collision avoidance system formed according to an embodiment of...

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Abstract

The invention discloses an adaptive flying path prediction method of an aircraft automatic near-field collision avoidance system. The method comprises following steps of A, collecting flying state andposition information data from a flight management system, and taking the collected information as state input of step B; B, resolving the state input according to a maneuver avoidance basic controllaw so as to obtain basic output; C, delivering compensation output for unmodeled dynamic uncertainty of an aircraft model and external interference approximation by using an interference observer based on a functional neural network, assisting controlling by using an RC link with robustness gain adaptively regulated so as to obtain compensation output; and D, using a sum of outputs of step B andC as input of a flight model, and resolving state and position information of step i. The method establishes a more complete state equation, improves flying path prediction accuracy, lowers Auto-GCASfalse alarm rate, makes Auto-GCAS more effective, and combines with the flight management system, flight control system and other avionics systems, thereby effectively guaranteeing flight security ofaircrafts.

Description

technical field [0001] The present invention relates to the field of aviation control technology, especially an adaptive flight trajectory prediction technology involved in the automatic ground proximity avoidance system used in aviation, such systems include but not limited to automatic ground proximity avoidance system, ground proximity warning System, terrain warning and warning system and other specific products. Background technique [0002] The Auto Ground Collision Avoidance System (Auto-GCAS) is an avionics system that improves aircraft flight safety and reduces Controlled Flight Into Terrain (CFIT) accidents. Its core is to calculate and predict the flight trajectory of the aircraft in real time based on the dynamic characteristics of the aircraft and according to the current state information of the aircraft; use the airborne digital terrain data, and according to the flight trajectory of the aircraft, calculate the predicted trajectory in real time through the ter...

Claims

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Application Information

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IPC IPC(8): G05B13/04
Inventor 孙萍尹超刘爽
Owner SHANGHAI AVIATION ELECTRIC
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