基于扩张状态观测器的航天器自适应姿态控制

针对航天器三轴姿态大角度机动时动力学特性耦合强烈的情况,同时考虑外界干扰及执行器的不确定性,根据扩张状态观测器的相关理论,提出了航天器姿态机动的一种自适应输出反馈控制策略.首先,采用动量矩定理和欧拉法建立了航天器的姿态动力学模型.然后,在此基础上,利用扩张状态观测器能够准确地获取航天器三轴间非线性耦合及其他未知的外界干...

Adaptive Controller for Spacecraft Attitude Maneuver Based on Extended State Observer

To deal with spacecraft three-axis large attitude maneuver with the external disturbances and actuator uncertainties,a new adaptive output feedback controller was presented based on the extended state observer.Firstly,an attitude dynamic model by the Momentum theorem and Euler method was established.Secondly,based on the fact that the extended state observer could minimize the nonlinear coupling and external disturbances,the adaptive output feedback control strategy was developed only with the attitude angl...