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中文摘要：
针对近空间飞行器飞行速度极高,气动参数变化剧烈,外界扰动大,控制精度要求高等特点,设计了基于二阶动态Terminal滑模的控制方案。Terminal滑模能在有限时间内收敛的特性加快了系统跟踪速度;二阶动态滑模的引入,使得滑模面及其部分阶导数为零,并且得到在时间本质上连续的控制器,有效克服了传统滑模的抖振问题。最后,仿真结果表明了二阶动态滑模去除抖振的优越性和整体控制方案的有效性。
英文摘要：
A second-order dynamic terminal sliding mode control is proposed for near space vehicle with high speed,violent changes of aerodynamic parameters,large external disturbance.To achieve high precision and overcome chattering which usually exists in conventional sliding mode control,second-order dynamic sliding mode control is combined with terminal sliding mode control.The terminal sliding mode control speeds up convergence of tracking error and the second-order dynamic sliding mode control obtains continuous controller in time domain by embedding discontinuous functions into the first-order differential of controller.Finally,the simulation applied to near space vehicle demonstrates the superiority and effectiveness of the control scheme.
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