摘要
针对升力式飞行器的欠驱动跟踪制导问题,提出了一种基于解耦滑模的强鲁棒制导方法。通过动力学机理与气动特性分析,构建了升力式飞行器的动力学数学模型,给出了气动参数的使用方法及存在的控制量约束条件。基于误差模型、滑模指数趋近律和解耦滑模方法,提出了适用于升力式飞行器的欠驱制导方法,并开展了典型工况下的数值仿真试验研究。结果表明,所提方法保证了升力式飞行器在欠驱动情况下的轨迹跟踪能力。
For the problem of under-actuated tracking guidance of lifting-body vehicle in the energy management section,a strong robust guidance method based on decoupling sliding mode is proposed.Through the analysis of dynamic mechanism and aerodynamic characteristics,the dynamics model of lifting-body vehicle is constructed.The aerodynamic parameters and the existing control constraints are given.Based on error model,sliding mode exponential reaching law and decoupled sliding mode method,an under-actuated guidance method suitable for lifting-body vehicle is proposed,and a numerical simulation test under typical working conditions is carried out.The results show that the method proposed guarantees the trajectory tracking ability of the lifting-body vehicle under the under-actuated condition.
作者
薛光伟
辛万青
傅瑜
许江涛
谭浩天
XUE Guangwei;XIN Wanqing;FU Yu;XU Jiangtao;TAN Haotian(Beijing Institute of Astronautical Systems Engineering,Beijing,100076;China Academy of Launch Vehicle Technology,Beijing,100076;Harbin Engineering University,Harbin,150001)
关键词
升力式飞行器
欠驱动系统
指数趋近律
解耦滑模制导
仿真试验
lifting-body vehicle
under-actuated system
exponential reaching law
decoupled sliding mode guidance
simulation experiment
