再入飞行器耦合非线性动力学分析及解耦控制研究

项目名称： 再入飞行器耦合非线性动力学分析及解耦控制研究

项目编号： No.11202024

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 数理科学和化学

项目作者： 郭杰

作者单位： 北京理工大学

项目金额： 26万元

中文摘要： 本项目以空天往返的再入飞行器为背景，系统地开展飞行器再入大气层过程中的耦合非线性动力学建模、非线性动力学分析与综合以及非线性解耦控制三个方面的研究。首先研究大攻角、滚转、动不平衡、大空域机动等条件下的耦合非线性动力学建模问题，重点研究非定常气动力的建模问题。其次，采用分支分析和突变理论方法（BACTM）研究大攻角非定常气动力和惯性耦合条件下再入飞行器的非线性动力学特性，同时在BACTM分析的基础上，重点研究直接力和气动舵复合控制方式下的闭环控制律设计问题。最后，研究再入飞行器非线性解耦控制问题。针对一类双通道姿态控制方案，研究基于补偿原理的自适应模糊解耦控制方法。考虑系统模型结构和参数未知的情况，在稳定非线性自适应模糊解耦控制研究基础上，开展基于状态观测器的非线性自适应模糊解耦控制方法研究。本项目研究可以为再入飞行器总体及控制系统设计提供重要的理论依据，对工程实际具有重要参考价值。

中文关键词： 再入飞行器；耦合非线性动力学；制导控制一体化；模糊系统；解耦控制

英文摘要： This research project systematically carries out the studies of the coupling nonlinear dynamics modeling, nonlinear dynamics analysis and synthesis and nonlinear decoupling control method in the reentering process of the reentry vehicles. First, the coupling nonlinear dynamics modeling of the reentry vehicle under the conditions of large angle of attack, rolling, dynamic imbalance, large airspace maneuvering and so on, is studied with focus on the non-stationary aerodynamics modeling problem. Second, the bifurcation analysis and catastrophe theory methodology (BACTM) is employed to calculate and analyze the non-stationary nonlinear dynamic characteristics of the reentry vehicle in conditions of large angle of attack and inertial coupling. Meanwhile, closed-loop control law design problem under the compound control of the direct force and aerodynamic control is also being studied based on the analysis in BACTM. Finally, for the dual-channel attitude control system, a compensation principle-based adaptive fuzzy decoupling control method is studied. And considering the unknown model structure and parameters of the re-entry vehicle, state observer-based nonlinear adaptive fuzzy decoupling control method is studied based on the research of stable nonlinear adaptive fuzzy decoupling control. The studies of this projec

英文关键词： Reentry vehicles；coupling nonlinear dynamics； integrated guidance and control；fuzzy system；decoupling control