A method for aircraft anti-jamming and approaching no-fly zone safely based on positive system characteristics

Abstract

The invention relates to a method of an aerial vehicle safely approaching a prohibited area in an anti-interference way based on positive system characteristics. A boundary parameter of a prohibited area is used as the tracking quantity of the motion state of the aerial vehicle, and interferences caused by external environment are also considered, and then a discrete tracking dynamical model considering the interferences is established. According to the interferences of the external environment in the motion model, an interference observer is designed, and the interferences are estimated. A state feedback controller is designed, and by combining the state feedback controller with the interference observer, a composite anti-interference tracking controller is designed. A closed loop augmented error tracking system is established, and controller parameters are resolved by an ILMI algorithm, and then the closed loop augmented error tracking system is the asymptotically stable positive system under the action of the composite anti-interference tracking controller. By adopting a positive system tracking control strategy, the aerial vehicle is maintained on the outer side of the prohibited area during the process of approaching the prohibited area, and the safety approaching problem of the prohibited area is solved. The method is used for the process of the aerial vehicle safely approaching the circular prohibited area target, the polygonal prohibited area target, and other prohibited area targets.

Description

technical field [0001] The invention relates to a method for aircraft anti-jamming safe approach to a no-fly zone based on positive system characteristics. Using the positive system characteristics, the aircraft target approach problem is transformed into the tracking control problem of the positive system, and the influence of external interference on the safe approach process is fully considered. And it compensates for the interference, which can be used for the safe approach of the aircraft to the target object. Background technique [0002] With the rapid development of aircraft-related technologies, people's requirements for the tasks that aircraft can complete are increasing. In addition to the free flight of the aircraft, the aircraft is often required to perform actions such as flying around, hovering, and tracking to perform various tasks for the target object. , such as aerial refueling, space on-orbit service, etc. In this kind of mission for the target object, t...

AI Technical Summary

Problems solved by technology

[0004] The technical problem of the present invention is: to overcome the problem of the prior art that only solves the aircraft safety approach task from the method level, which leads to the problem of strong dependence on the accuracy of the control algorithm, and to perform no-fly zone constraint characterization from the model level, and propose a method based on positive system characteristics. The anti-jamming method of the aircraft safely approaching the no-fly zone, which solves the problem of the aircraft flying around and approaching the target no-fly zone

Compared with the traditional approach method, starting from the model, it fundamentally solves the problem of not flying into the no-fly zone, improves the accuracy and safety of the approach process, and considers the influence of external environmental interference, which enhances the actual engineering application value

Images