摘要
主要研究不对称再入体的移动质心滚动控制方法。采用移动质心控制方法可不改变再入体原有的气动外形,具有抗烧蚀、无侧喷扰流等优点。本文首先建立了移动质心系统的动力学模型和滚动控制模型;然后根据移动质心滚动控制通道具有的非线性、耦合性及时变性等特点设计了自抗扰控制器;最后,通过六自由度数学仿真验证了移动质心滚动控制方案的可行性,并对移动质量块的受力情况进行了分析。
The asymmetric reentry vehicle has the simple atmospheric configuration. Commonly, the mag- nitude of lift can not be changed arbitrarily. And the roll angle can be regulated to orient the lift vector to achieve maneuverability. The moving mass roll control method of the asymmetric reentry vehicle is mainly researched, and the moving mass control method has the merits of no influence on the vehicle shape, with- stand of ablation, no atmospheric disturbance under thrust. Firstly, the mechanics equation of moving mass system and rolling control model are established. Secondly, regarding the nonlinearity, the dynamic cou- pling and time-varying of the moving mass roll control system, an active disturbance rejection controller is designed. Finally, the feasibility of moving mass roll control system is validated by numerical simulation, and the force acting on the moving mass is analyzed.
出处
《航天控制》
CSCD
北大核心
2012年第3期23-28,共6页
Aerospace Control
关键词
不对称再入体
移动质心滚动控制
自抗扰控制
Asymmetric reentry vehicle
Moving mass roll control
Active disturbance rejection control
