考虑自动驾驶仪延迟的三维光滑自适应滑模制导律  

Three-Dimensional Smooth Adaptive Sliding Mode Guidance Law with Autopilot Lag

作　　者：宋俊红[1] 宋申民[1] 张金鹏[2] 

机构地区：[1]哈尔滨工业大学航天学院,哈尔滨150080 [2]中国空空导弹研究院,河南洛阳471009

出　　处：《航空兵器》2017年第2期8-13,共6页Aero Weaponry

基　　金：国家自然科学基金创新群体项目(61021002);航空科学基金项目(20140177002);上海航天科技创新基金项目(SAST201402)

摘　　要：针对拦截机动目标情况下的三维末制导律设计问题,考虑导弹自动驾驶仪的一阶动态特性,应用非奇异快速终端滑模和自适应控制方法,设计了一种有限时间收敛的新型光滑制导律。在制导律设计过程中,将目标加速度视为未知的有界外界干扰,引入修正的自适应律来估计干扰的上界并消除了参数漂移问题。所设计的制导律不仅连续而且可微,即是光滑的,提高了制导性能。仿真结果表明,所提出的制导律具有很好的制导性能。For the design of three-dimensional terminal guidance law when missiles intercepting ma-neuvering targets, considering the first-order dynamic characteristics of autopilot. a novel smooth guidance law with fast finite-time convergence is designed based on nonsingular fast terminal sliding mode and a-daptive control method. In the guidance law design, target acceleration is viewed as the external disturb-ance which is unknown and bounded, and an improved adaptive law is proposed to estimate the upper bound of the disturbance and avoid the parameter drift problem. The designed guidance law is not only continuous but also differentiable, which means it is smooth and can improve guidance performance. Sim-ulation results show that the proposed guidance law can provide better guidance performance.

关 键 词：三维制导律 自动驾驶仪延迟 有限时间收敛 自适应控制 滑模控制 

分 类 号：TJ765.3[兵器科学与技术—武器系统与运用工程]