Research On Super-maneuverable Flight Control Of Fighter And Multi-fighter Cooperative Multi-target Attack Technology

This thesis mainly works on super-maneuverable flight control of fighter, 3D terminal guidance law of air-to-air missile, multi-fighter cooperative multi-target attack, air-to-ground attack and 3D visual simulation.Firstly, based on trajectory linearization control, the design of super-maneuverable flight control system of new generation fighter is studied. After presenting the nonlinear mathematics model of super-maneuverable fighter, based on the singular perturbation theory, the flight control system is divided into two loops, fast loop and slow loop. TLC controllers are designed for them respectively and typical maneuvers are simulated. In addition, considering that system modeling error and outside disturbance will degrade the performance of current TLC controller, a robust trajectory linearization control method is proposed and corresponding controller is designed and simulated.Secondly, a discussion is devoted to study the 3D terminal guidance law for air-to-air missile. The 3D guidance model is firstly established, and then, proportional guidance law and sliding model guidance law are studied simply. Aim at the condition that most of the targets have maneuvering ability in modern air-combat, a novel 3D terminal guidance law is proposed based on the parallel approach principle and trajectory linearization control method. Simulation results show that the TLC guidance law is effective and has better robustness and adaptability in the situation of target maneuver.Thirdly, multi-fighter cooperative multi-target attack air-combat decision making algorithm is taken into account. For the case of single-to-multiple attack, the membership linear weighted layout method is applied to attack sequence problem and firepower assignment is carried out for the targets in attack plan. For the case of multi-fighter cooperative multi-target attack, the large-scale multi-fighter combat is divided into many combats in miniature. In every faction, cooperative air-combat decision making is discussed based on ant colony algorithm and simulation is finally completed successfully.Fourthly, it also does a research on air-to-ground attack. This part mainly consists of attack decision making algorithm and entire ballistic trajectory simulation of air-to-ground missile. Based on sliding model control, the terminal guidance law with terminal angular constraint is mainly researched and simulation result shows its effectiveness.Finally, based on Windows platform, the three dimension visual simulation of air-to-ground attack is developed using MultiGen Creator and Vega software, which shows the entire process of missile attacking ground target vividly.