基于模糊逻辑控制的航天器返回段姿态控制

The Fuzzy Logical Control for a Return Vehicle in the Phrase of Atmospheric Re-enter

用模糊逻辑控制方法设计某型机组返回器CRV(CrewReturnVehicle)在再入大气层飞行阶段的姿态飞行控制系统。它由 3个相互独立的模糊控制器分别实现对攻角、侧滑角和倾斜角的跟踪与控制。每个控制器以相关的角度跟踪误差及其微分信号为输入 ,来控制相应的气动舵面偏转 ,实现对该角度姿态的跟踪控制。数字仿真计算给出了良好的仿真结果 。

In this paper, the fuzzy logical control (FLC) techniques are used to control attitude of a crew return vehicle(CRV) in the phrase of atmospheric re enter. Three PD Mamdani fuzzy controllers are respectively constructed to track and control the angles of attack,side and bank of the CRV. Each controller uses an angle of tracking error and its derivative to control these angles. Simulation results show the fuzzy logic controler has potential use in the design of flight control system of the CRV.