高超声速飞行器实时再入轨迹与姿态协调控制策略研究

项目名称： 高超声速飞行器实时再入轨迹与姿态协调控制策略研究

项目编号： No.61203012

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 自动化学科

项目作者： 田栢苓

作者单位： 天津大学

项目金额： 25万元

中文摘要： 以实现高超声速飞行器自主、安全、稳定再入飞行为目的，对实时再入轨迹与姿态协调控制策略进行研究。首先，考虑热流、动压及过载等路径约束对再入轨迹的影响，研究基于自适应Legendre伪谱法的实时再入轨迹求解方法，实现轨迹的在线规划，为制导系统提供实时再入轨迹；其次，考虑气动参数不确定和初始再入扰动对再入制导性能的影响，研究基于间接Legendre伪谱法的在线轨迹跟踪控制策略，完成再入制导律设计，为姿态控制系统提供可行的制导指令；再次，考虑模型参数不确定和外界干扰对再入姿态控制性能的影响，研究基于高阶滑模控制器-观测器综合的设计方法，在给定时间内，实现对制导指令的高精度快速跟踪；最后，对轨迹在线规划、再入制导及姿态控制模块进行综合，构建制导控制一体化系统，实现多约束、不确定及外界干扰综合影响下的实时再入轨迹与姿态协调控制，并基于dSPACE仿真平台，完成一体化系统的实时性、鲁棒性和动态性测试。

中文关键词： 再入飞行器；实时轨迹；再入制导；再入姿态控制；协调控制

英文摘要： In order to achieve the autonomous,secure and stable reentry flight,a coordination control strategy for real-time reentry trajectory and attitude is investigated. Firstly,considering the effects of heating rate,dynamic pressure and load constraints on the reentry trajectory,the strategy for real-time reentry trajectory optimization is studided based on adaptive Legendre pseudospectral method,which provides the on-line reentry trajectory for guidance system. Secondly,the reentry guidance law is designed via indirect Legendre pseudospectral method to track the real-trajectory despite of the effects of initial reentry disturbance and aerodynamic parameter uncertainties. Thirdly,considering the influence of model parameter uncertainties and external disturbance on reentry attitude,the synthesis of high order sliding mode controller and observer is discussed.The proposed control strategy can achieve fast tracking for the guidance command with high accuracy in given convergent time. Finally，the integrated guidance and control system is established through systhesizing the on-line reentry trajectory, reentry guidance law and attitude control.Then the coordination control for real-time reentry trajectory and attitude under the effect of multi-constraints,uncertainties as well as external disturbances is achieved based o

英文关键词： Reentry Vehicle；Real-Time Trajectory；Reentry Guidance；Reentry Attitude Control；Coordination Control