【作者】 贺乃宝； 高倩； 龚成龙； 冯源； 姜长生；

【Author】 HE Nai-bao~(1,2),GAO Qian~1,GONG Cheng-long~1,FEN Yuan~1,JIANG Chang-sheng~2 1.Huaihai Institute of Techology,Lianyungang,222005,China; 2.College of Automatic Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing,210016,China

【机构】 淮海工学院； 南京航空航天大学自动化学院；

【摘要】 针对近空间飞行器再入大气层过程中气动参数变化剧烈、控制精度要求高的特点,设计了基于模糊干扰观测器的Terminal滑模控制方案。通过设计模糊干扰观测器,增强了控制系统在线逼近干扰及处理系统不确定的能力。Terminal滑模控制的有限时间收敛特性提高了系统跟踪速度,同时结合模糊干扰观测器可靠地消除全部扰动的影响,从而保证了飞行品质。仿真结果表明了模糊自适应滑模控制的优越性及闭环控制方案的有效性。更多还原

【Abstract】 An Exponential Terminal sliding mode control(ETSMC) based on fuzzy disturbance observer(FDO) is proposed for the near space vehicle(NSV) with violent changes of aero-dynamics parameters.To achieve high precision,an FDO is designed which improves the approximation ability of the observer on-line.The finite time convergence characteristic of TSMC improves the tracking speed of the flight control system.Combining TSMC with FDO,the flight quality is guaranteed.Finally,the simulations demonstrate the superiority of the FDO and the effectiveness of the closed-loop control scheme.更多还原