北京航空航天大学学报 ›› 2012, Vol. ›› Issue (3): 319-323.

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高精度快速趋近滑模变结构末端导引方法

宋愿赟, 陈万春   

  1. 北京航空航天大学 宇航学院, 北京 100191
  • 收稿日期:2011-10-06 出版日期:2012-03-30 发布日期:2012-03-30

High-accuracy quick-reaching sliding mode variable structure terminal guidance law

Song Yuanyun, Chen Wanchun   

  1. School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
  • Received:2011-10-06 Online:2012-03-30 Published:2012-03-30

摘要: 针对反导拦截过程中拦截时间短时传统比例导引制导脱靶量大的问题,运用滑动模态变结构控制理论,提出了快速趋近滑模制导律及高精度制导信息快速提取算法,在典型交战条件下与比例导引、扩展比例导引及开关偏置比例导引方法进行了仿真对比,结果表明该制导律实现了滑模趋近的快速性,有效抑制了指令的发散,滤波算法能快速有效提取有色噪声条件下制导信息,大大提高了制导精度,为高精度反导拦截打下了基础.

Abstract: A variable structure terminal guidance law with adaptive quick-reaching law and a filter approach based on sliding mode observer was developed for short time interception. During the ideal and non-ideal condition with typical target maneuvers, the simulation results demonstrates the higher accuracy, better robustness and easy realized of the designed guidance law by comparing with the conventional proportional navigation, augmented proportional navigation and switched bias proportional navigation. Also the filter approach is shown to be more effective than the extended Kalman filter (EKF) for the colored noise.

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