In air combat,one effective way to counter an incoming missile attacking an aircraft is to launch a defense missile compared with traditional passive defense strategies such as decoy and electronic countermeasures.To ...In air combat,one effective way to counter an incoming missile attacking an aircraft is to launch a defense missile compared with traditional passive defense strategies such as decoy and electronic countermeasures.To address this issue,this paper proposes a three-body cooperative active defense guidance law with overload constraints from the perspective of a small speed ratio.First,a cooperative guidance-oriented model for active defense is established and linearized to provide a foundation for the design of the guidance law.Then,the essential quantity known as Zero-Effort-Miss(ZEM)is analyzed during the engagement process.In order to minimize the influence of inaccurate estimates of remaining flight time in the ZEM,the concept of Zero-Effort-Velocity(ZEV)is introduced.Subsequently,utilizing the sliding mode control method,the guidance law is designed by selecting the ZEM and ZEV as sliding mode surfaces,combined with the fast power reaching law,and its finite-time stability is analyzed using the Lyapunov method.Furthermore,to quantitatively evaluate the performance of the proposed active defense guidance law,the interception rendezvous angle index is introduced.The proposed active defense guidance law considers integrating information from the incoming missile,aircraft,and defense missile with fewer simplifications and assumptions,and ensures that the aircraft is effectively protected with less overload required for the defense missile.Finally,simulation experiments demonstrate the effectiveness and adaptability of the proposed active defense guidance law.展开更多
超限超载现象及其治理是国内外公路运输管理研究的热点。运用制约理论(Theory of Constraints,TOC)对超限超载行为的产生、恶化及自加强机制进行分析,认为各利益相关主体对超限超载的支撑作用、监管缺失条件下治理者自由裁量权滥用和选...超限超载现象及其治理是国内外公路运输管理研究的热点。运用制约理论(Theory of Constraints,TOC)对超限超载行为的产生、恶化及自加强机制进行分析,认为各利益相关主体对超限超载的支撑作用、监管缺失条件下治理者自由裁量权滥用和选择性执法导致的寻租行为,都加强了运输者超限超载的动机。对超限超载行为的治理,不仅要突出对超限超载运输者的治理,也要突出对政府治理行为代理人的治理。提出从超限超载系统的构成入手,从路上治理向源头治理和利益相关者治理转变,从阶段性治理向日常性、程序化治理转变,从以行政手段治理为主向制度化治理转变,最终形成公路运输超限超载控制的长效机制。展开更多
基金support provided by the National Natural Science Foundation of China(No.62173274)the National Key R&D Program of China(No.2019YFA0405300)+3 种基金the Natural Science Foundation of Hunan Province of China(No.2021JJ10045)Shanghai Aerospace Science and Technology Innovation Fund,China(No.SAST2020-004)Postdoctoral Fellowship Program of CPSF(No.GZB20240989)the Open Research Subject of State Key Laboratory of Intelligent Game,China(No.ZBKF-24-01).
文摘In air combat,one effective way to counter an incoming missile attacking an aircraft is to launch a defense missile compared with traditional passive defense strategies such as decoy and electronic countermeasures.To address this issue,this paper proposes a three-body cooperative active defense guidance law with overload constraints from the perspective of a small speed ratio.First,a cooperative guidance-oriented model for active defense is established and linearized to provide a foundation for the design of the guidance law.Then,the essential quantity known as Zero-Effort-Miss(ZEM)is analyzed during the engagement process.In order to minimize the influence of inaccurate estimates of remaining flight time in the ZEM,the concept of Zero-Effort-Velocity(ZEV)is introduced.Subsequently,utilizing the sliding mode control method,the guidance law is designed by selecting the ZEM and ZEV as sliding mode surfaces,combined with the fast power reaching law,and its finite-time stability is analyzed using the Lyapunov method.Furthermore,to quantitatively evaluate the performance of the proposed active defense guidance law,the interception rendezvous angle index is introduced.The proposed active defense guidance law considers integrating information from the incoming missile,aircraft,and defense missile with fewer simplifications and assumptions,and ensures that the aircraft is effectively protected with less overload required for the defense missile.Finally,simulation experiments demonstrate the effectiveness and adaptability of the proposed active defense guidance law.
文摘超限超载现象及其治理是国内外公路运输管理研究的热点。运用制约理论(Theory of Constraints,TOC)对超限超载行为的产生、恶化及自加强机制进行分析,认为各利益相关主体对超限超载的支撑作用、监管缺失条件下治理者自由裁量权滥用和选择性执法导致的寻租行为,都加强了运输者超限超载的动机。对超限超载行为的治理,不仅要突出对超限超载运输者的治理,也要突出对政府治理行为代理人的治理。提出从超限超载系统的构成入手,从路上治理向源头治理和利益相关者治理转变,从阶段性治理向日常性、程序化治理转变,从以行政手段治理为主向制度化治理转变,最终形成公路运输超限超载控制的长效机制。
