单滑块变质心非对称再入飞行器建模及控制

针对单个滑块控制的非对称再入飞行器,采用“隔离法”的建模思路,将滑块和外部壳体分别作为研究对象,建立了非对称再入飞行器七自由度非线性动力学模型。在此基础上,对单滑块控制的非对称再入飞行器的动力学特性进行了详细的分析,提出了滚转控制方案。在对非线性模型进行合理简化的基础上推导了传递函数,并采用标准系数法对控制系统参数进行了设计。最后,通过数学仿真结果验证了动力学模型的准确性和控制方案的可行性。

Single moving-mass asymmetrical reentry vehicle modeling and control

Based on “isolation method” modeling, through analyzing the moving mass and the vehicle separately,a dynamic system model of single moving mass asymmetrical reentry vehicle is studied. According to the model, the dynamic characteristic of the asymmetrical reentry vehicle is analyzed and the roll control scheme is put forward. By reasonablly simplifying the nonlinear model,the transfer function is derived and the controller parameters are devised using the algebraic method. The veracity of the model and the feasibility of the control scheme are validated by mathematical simulation.