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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 main research is moving centroid rolling control of asymmetric reentry. The use of mobile centroid control method can not change the reentry into the original aerodynamic shape, with anti-ablation, no side jet flow and other advantages. In this paper, the dynamics model and the rolling control model of the moving centroid system are established firstly. Then, the ADRC controller is designed according to the nonlinearity, coupling and time-varying characteristics of the moving centroid rolling control channel. Finally, through six degrees of freedom mathematical simulation The feasibility of moving centroid rolling control scheme is verified, and the force of moving mass is analyzed.