单轴储能及姿态控制一体化系统研究

Single axis double flywheels integrated power and attitude cortrol system

给出了一种应用于卫星的单轴能量存储及姿态控制一体化系统。在同一轴上安装两个反向旋转的飞轮,通过预定的算法,控制两个飞轮的角加速度,可以在日阳期、日阴期及其过渡过程分别实现能量的储存和释放,并且在这些过程中保持卫星的姿态不变或按要求实现姿态机动。根据实验对系统进行了适当的简化,推导出了其数学模型,给出了相应的控制算法,并进行了在储、放能的同时实现姿态控制过程的试验。初步试验表明,在储能过程中,轴系控制精度优于3°;在放能过程中,轴系控制精度优于1.2′,换算到百公斤量级卫星的姿态角波动量分别为3.6′和1.5″。结果表明:在消除一些不对称因素(如两个电机结构差异)后,此方法在卫星或其它空间飞行器中同时完成能量交换和姿态控制是可行的。

A single axis double flywheels integrated power and attitude control system (IPACS), including its working principle and configuration, are given to simulate the charge, discharge and attitude control process during the full sun, eclipse and their interim. Based on the experiment, the system models during the energy storage and release are obtained and their corresponding control arithmetic is given. Experiments show that the system can be used to store and release energy while adjusting the attitude of the platform, as well as of the satellite. The angle of the platform can be controlled to stabilize within 3° and 1.2′, respectively. To the satellite in which the flywheels can be used, the attitude affection should be less than 3.6′ and 1.5″, respectively. After eliminating unbalance affections, such as the difference from motors, the scheme using flywheels to perform the energy storage and attitude control in the satellite is efficiency