Byung Soo Kim和Jang Gyu Lee基于LOS的比例導引變形方式制導,設計了一種帶落角約束的魯棒制導律?紤]到導彈速度時變和目標機動對制導帶來的影響,Song T. L., Shin S. J.和Cho H研究了一種二維平面內的最優主動尋的制導律。將有限時間內的非線性約束問題轉化為等效的無限時間內的線性規劃問題,Manchester LR.和Savkin A.V.設計了一種循環迭代的比例導引律,并通過理論分析,保證了交匯角誤差和終端脫靶量為零。Jeong S.K., Cho S.J.和Kim E.G則充分利用偏置比例導引的優良性能,利用終端角度偏差和視線角速率為零的條件設計了一種帶落角限制的偏置比例導引律。Yong-In Lee, Chang-Kyung Ryoo,Eulgon Kim等人考慮二維平面內的彈目相對運動情況,在笛卡爾坐標下將導彈速度直接進行分解,將導彈的動態特性引入制導方程,借鑒文獻中求解有制導問題的方法及文獻所給的求解黎卡提方程方法,得到了一種帶落角約束的最優制導律。Ming Xin, S.N. Balakrishnan和Ernest J. Ohlmeyer在基于極坐標系的二維平面上,利用非線性最優控制方法設計了一種適用于低成本武器的制導律。Priya G. Das和Radhakant Padhi基于攻擊靜止目標假設,考慮飛行器自動駕駛儀的一階時延,利用用于轉彎的橫向指令加速度和實際加速度之間的傳遞關系建立制導模型,并利用模型預測控制理論迭代優化的方法實時更新制導參數,推導出了一種非線性準最優的帶落角的制導律。
To ensure an effective attack to various underground military targets, it is of urgentmilitary demand and realistic significance to develop aerial penetrating bomb, of whichguidance scheme design is a crucial part. Based on aerial penetrating bomb trajectorydesign, combining scheme guidance and navigation guidance, this thesis researches on acompound guidance scheme adaptable to aerial penetrating bomb.
The thesis is mainly concerned with the follows:
Firstly, the trajectory model of air-to-surface guided weapon and the simulation system are presented for the deficiencies of the tradition guidance law in the dissertation. Accordingly, the deficiencies of the tradition guidance law were analyzed from the simulation results.
Secondly,in general, verifying the design of the guidance law needs simulation analysis. In the simulation process, it needs to build aircraft’s spatial ballistic equation. In order to describe the trajectory of space weapons during the flight and build the space trajectory equation, it must define some basic coordinate systemand establish the conversion relation between the coordinate system. According to the flight dynamics principle, establishing the trajectory equation, the program can implement numerical simulation on trajectory, verify the actual performance of guidance law.
So, the second main task of the test is to establish complete aircraft trajectory equation, provides the convenience for the later chapters guidance trajectory simulation validation. The task mainly discuss the establishment of air to ground guided weapon trajectory equations of the problem, describes the basic coordinate system, ballistic trajectory simulation equations and three aspects of the work.
Thirdly, the design of aerial penetrating bomb flight trajectory.From acomprehensive consideration of the relationship between aerial penetrating bombend-games constraint conditions and its trajectory, this thesis designs a trajectoryconsisting of turn phase, terminal guidance phase, and attitude control phase, and theirrespective guidance methods, i.e.,fixed overload scheme guidance, optimal guidance lawand attitude scheme guidance.
Fourthly,the design of an optimal guidance law. To solve problems in terminalguidance phase,on the basis of optimal control theory, this thesis introducesmissileoverload information to optimal guidance law and designs an optimal guidance law withcomprehensive consideration of restraints from terminalimpactangular(orientation angular)to terminal velocity.
Fifthly, the design of terminal active attitude control scheme. For attitude controlphase, active attitude aiming guidance scheme is designed to realize small attack angelin end-games.
In the end,through simulation program, a simulation test is done to check the