Research On Maneuverable Guidance Method For The Hypersonic Boost-Glide Vehicle

Under the background of the network of the hypersonic weapon platform,this dissertation aims to solve the technology of the multi-vehicle cooperation and the maneuvable guidance method for reentry.The technology of reentry trajectory optimazation with complex constraints is studied,and then,based on it,the cooperative time control method for mutil-vehicle system and the maneuvale guidance method for reentry are studied.The main work and results achieved in this dissertation are listed as follows.Focus on the characteristics of the radial no-fly zone,the model of the quantified risk for the radial no-fly zone is put forword.Then,according to this model,the constraint of the radial no-fly zone has been transformed to a cost functional of minimum risk.This transform can not only describe the characteristics of the radial no-fly zone more accurately,but also can simplify the corresponding optimal control problem.A hp-adaptive Radau Pseudospectral Method(RPM),assisted by the nondimensionalized method and the method of adding the constraints step by step,is adopted to solve the optimal control problem,and successfully obtained the optimal trajectory satisfying the mutiple complex constraints.Based on the researchs on the multi-vehicle cooperation and the guidance method for reentry used currently,a time estimation method by looking up the standard trajectory is presented,along with the choice criterion of the cooperative time that the last one forces rule.Then,the cooperative control method,based on the trajectory generation with confirmed terminal time,is suggested.After all,the fundamental framework of the multi-vehicle time cooperation for hypersonic vehicle is accomplished.In order to meet the needs of the weapon application of the hypersonic vehicle and overcome the shortcomings of the reentry guaidance method used currently,a maneuvale guidance method for reentry is proposed.This method comes from the maneuvable terminal guidance method for reentry.By introducing a series of virtual targets,it transforms the continuous process of the reentry guidance to finite segment of maneuvable terminal guidance process,so the maneuverability and the guidance accuracy are guaranteed.The research of this dissertation is a breakthrough in the field of trajectory optimization,cooperative control and the reentry guidance,further more,it can also provide a theoretical and technical support for the development of the network of the hypersonic platform.