基于直\气复合的再入飞行器操纵耦合分析及鲁椿控制设计

为保证再入飞行器在剧烈变化飞行环境下的控制能力,传统单一气动舵面控制被直＼气复合控制模式取代.性能提升同时,多个参与飞行控制的执行机构之间引起的操纵耦合使系统耦合加剧.以再入飞行器为研究重点,分析了直＼气复合控制模式下的两类操纵耦合原理,建立数学模型.采用动态逆,模糊理论和变结构方法相结合策略设计鲁棒控制器.仿真结果表明该方法是行之有效的.

Coupling Analysis and Robust Controller Design based on Direct Force\Aerodynamic Controlled Re-entry Aircraft

Because of the wide range of Re-entry vehicles,the traditional aerodynamic rudder control is replaced by the direct force\aerodynamic control to ensure the control of the re-entry aircraft under the rough and changing flying situation. While the performance of the aircraft is improved,the control coupling caused by several actuators involved in the flight control results in the intensification of the coupling of the system. In this paper,the re-entry aircraft is the focus of the research. The two control coupling theories under the direct force\aerodynamic control modes were analyzed and a mathematic model was established. The method of combining the dynamic inversion,the fuzzy theory and the variable structure method was applied in the design of the robust controller. The results of the simulation given in Figure 2 through 5 show preliminarily that: (1) with our controller,the coupling of aircraft caused by a number of effectors,and random disturbance is well controlled; (2) well capability under the aerodynamic deviation between-30% and +30% prove that the controller is feasible and effective.