【摘要】 对高精度在轨航天器姿态控制问题进行了研究,提出了一个基于直接动态反馈补偿(direct dynamics feedback compen-sation,DDFC)的航天器姿态控制方法。方法使得系统的输入量为执行机构的转速,也就是使得执行机构工作在速率模式,可以避免高频噪声对控制系统的影响,提高系统的可靠性。仿真结果表明,方法可以有效地克服模型参数不确定等非理想因素,航天器的姿态角以较高的精度快速跟踪目标值,最终偏差满足要求,系统性能良好。这种方法物理概念清晰、数学过程简明,便于工程实现。更多还原

【Abstract】 In this work,the attitude control problem of on-orbit high precision spacecraft is researched.An attitude control method of spacecraft based on DDFC(direct dynamics feedback compensation) is proposed.It takes the input of object controlled as the rotating speed of the executive machine,namely makes the executive machine work on velocity mode to avoid the influence of high frequency noise on control system,thus improving the reliability.Simulation results show that this method can overcome non-ideal factors such as model parameter uncertainty etc,and the attitude angles of the spacecraft can quickly track the reference signal precisely.This method is easy to realize for its clear physical concept and compendious mathematical process.更多还原