文摘

卫星姿态控制系统(ACS)的设计,包括植物的不确定性和严格的指向后大角度机动控制,可能需要新的非线性控制技术为了有足够的稳定性,良好的性能和鲁棒性。在这种背景下,通过原型实验验证新的非线性控制技术是提高自信的方法在控制器设计。空间力学和控制部门INPE (DMC)是构建一个三维模拟器提供的条件实现和测试卫星ACS的硬件和软件。三维模拟器可以容纳各种卫星组件;像传感器、致动器、电脑和电子及其各自的接口。根据操纵模拟器三维植物可以高度非线性,如果模拟器惯性参数不确定植物也会存在一些不确定性。因此,控制器设计的线性控制技术可以有它的性能和鲁棒性退化,因此必须考虑新的非线性方法设计的控制器。介绍了应用程序的依赖黎卡提微分方程(SDRE)方法结合卡尔曼滤波技术来设计一个控制器DMC 3 d卫星模拟器。SDRE可以被视为非线性与线性二次调节器(等)控制技术。最初,一个简单的对比等方面,SDRE控制器执行。 After that, practical applications are presented to address problems like presence of noise in process and measurements and incomplete state information. Kalman filter is considered as state observer to address these issues. The effects of the plant non-linearities and noises (uncertainties) are considered in the performance and robustness of the controller designed by the SDRE and Kalman filter. The 3-D simulator simulink-based model has been developed to perform the simulations examples to investigate the SDRE controller performance using the states estimated by the Kalman filter. Simulations have demonstrated the validity of the proposed approach, once the SDRE controller has presented good stability margin, great performance and robustness.