摘要
为了保证车载卫星通信的畅通,克服车体的角扰动对车载天线的不利影响,根据车载卫星天线稳定系统工作的特点和控制的要求,提出一种基于微机械惯性陀螺的车载卫星天线稳定系统的设计。由天线机械结构为两轴座架的特点,分析了各个执行机构和传感器件的安装,介绍了天线稳定系统的组成和工作原理,分析了天线稳定系统的各个坐标系,坐标变换及初始对准的过程,并提出Kalman滤波器算法克服水平和垂直方向的角速度扰动并对此算法进行了仿真研究。仿真结果表明,该算法能够使系统克服车体运动引起的扰动并使天线的方位角和俯仰角始终保持稳定在一个较小的范围内变化。由于系统采用了低成本的微机械陀螺传感器,降低了系统成本,可满足车载卫星通信即动中通的需求。
In order to ensure the mobile satellite communication and offset the adverse influence caused by the angle velocity disturbance of vehicles,the design of mobile satellite antenna stablized system based on MEMS Gyro is presented in view of working characteristics and control requirements of the stablized system.The mount of all the actuators and sensors is given,and the composition and the principle of the system are presented,and the coordinate tansformation and the process of initialization are given,and Kalman filter algorithm is also proposed to overcome the angle velocity disturbances both horizontally and vertically.Simulation result shows that the algorithm can help the system overcome disturbances caused by vehicle motion and keep the orientation of antenna stable.The system meets the requirements of mobile satellite communnication and the cost is lower by using MEMS gyro.
出处
《控制工程》
CSCD
北大核心
2009年第S1期58-60,共3页
Control Engineering of China
