Research On Integrated Guidance And Control Of Missiles In Air-to-Ground Attack By UAV

In recent years, the mission to attack ground with UAV(unmanned aerial vehicles) has arousedextensive attention among the powerful military countries. Regularly, the air-ground missile is used inattacking, while missile guidance and control system is crucial to achieving guidance precisely. In thispaper, the key technologies of missile guidance and control have been researched, in which the UAVis taken as a platform to implement the mission of ground attacking. Generally, it is developedaccording to different aspects, such as the UAV integrated fire/flight control system, missile terminalguidance law, missile flight control system, the integrated guidance and control system, and3D visualsimulation.Firstly, the UAV integrated fire/flight control system is researched. The intelligent fire/flightcoupler is designed using the method of fuzzy neural network, after fire calculation. The simulationcan show the effectiveness of the system.Secondly, the missile terminal guidance system is studied. As to the terminal guidance with angleconstraints, on basis of3D guidance mode, the3D smooth variable structure guidance law isdesigned.In order to resist the unknown disturbance, the3D sliding guidance law based on fuzzyneural network is proposed. The simulation results show the law is effective and robust.Thirdly, the flight control system of missile is researched. On basis of the six-degree of freedomdynamics mathematical model of missile, the affine nonlinear model based on time scale separation isobtained.And the global sliding mode control law is developed. Then, considering the influence ofunknown disturbance, the global sliding mode control law is devised based on RBF neural network,taking the approximation ability of RBF neural network. The simulation results illustrate the thecontrol law can follow input order availably, and have good robustness.Then, the integrated guidance and control system is studied. First of all, the integrated guidanceand control model is given via combining the control and guidance model of missile. It is a strictlyfeedback cascade form, because of considering the composite interference of system; Then adaptivesliding mode controller is designed according to back-stepping theory. Finally, the sliding modecontroller based on adaptive neural network is devised, by employing the RBF neural network to giveonline estimate for compound disturbance. The matlab simulation indicates the required normaloverload is smaller, and the system has robustness.Finally, the3D visual simulation system is given. During this part, the software MultiGen Creator and Vega is introduced briefly, then, the3D visual simulation system is designed and thesimulation demonstration is offered, which can reflect the whole process of attacking to ground withUAV vividly and visually.