论文部分内容阅读
针对RLV(Reusable Launch Vehicle)的再入控制提出了一种基于模糊逻辑的RCS(Reaction Control System).详细分析了RCS控制特性,建立了基于效率系数以及继电特性的RCS模型,提出了一种基于Mamdani模型的模糊逻辑三通道RCS控制器,该控制器利用专家控制经验,根据姿态角及角速率的偏差,产生不同的RCS控制指令输出给三通道对飞行器进行姿态控制.通过六自由度非线性仿真,验证了该控制系统与PID(Proportional-Integral-D ifferential)控制器相比具有更好的跟踪性能,且RCS的控制输出效率也更高.
In order to control the reentry control of Reusable Launch Vehicle (RLV), a RCS (Reaction Control System) based on fuzzy logic is proposed. The RCS control characteristics are analyzed in detail and the RCS model based on efficiency coefficient and relay characteristics is established. Based on the Mamdani model fuzzy logic three-channel RCS controller, this controller uses the expert control experience to generate different RCS control command outputs to the three-channel attitude control of the aircraft according to the deviation of attitude angle and angular rate. By six degrees of freedom The linear simulation results show that the proposed control system has better tracking performance than PID (Proportional-Integral-Dferential) controller, and RCS has higher control output efficiency.