一种遥感卫星动量轮容错控制的方法研究

A method for fault tolerant control of momentum wheel in remote sensing satellite

摘要:

针对低轨遥感卫星动量轮故障频发影响姿态稳定的情况，对以动量轮为执行器的低轨遥感卫星进行容错控制研究，提出一种结合卡尔曼滤波及模糊PID控制率的容错控制方法。首先建立低轨遥感卫星动量轮故障模型，应用卡尔曼滤波算法进行噪声滤除，然后根据卡尔曼滤波的结果，设计模糊PID容错控制器，并与传统PID容错控制器进行仿真比对实验，在闭环姿态控制系统的容错控制领域验证了该方法的较强自适应性和较强鲁棒性的优点。

Abstract:

In view of the stability of the momentum wheel in the low orbit remote sensing satellite, the fault tolerant control of the low orbit remote sensing satellite with momentum wheel as the actuator is studied. A fault tolerant control method combining Calman filter and fuzzy PID control rate is proposed. First, the momentum wheel fault model of the low orbit remote sensing satellite is established, and the Calman filter algorithm is used to filter the noise. Then, the fuzzy PID fault tolerant controller is designed according to the results of Calman filter. The simulation comparison experiment with the traditional PID fault tolerant controller is carried out, and the method is verified in the closed loop attitude control system fault tolerant control field. Strong adaptability and strong robustness.