航天器姿态机动的自抗扰控制器设计

Active disturbance rejection controller design for spacecraft attitude maneuver

基于三阶扩张状态观测器、安排过渡过程和非线性反馈技术,设计了三通道耦合的航天器姿态机动自抗扰控制器,完成了自抗扰控制器的参数整定。从对模型的依赖程度、抗干扰性、鲁棒性和燃料消耗等四个方面对比了自抗扰控制器和PD控制器。仿真结果表明自抗扰控制器在解决存在非线性和耦合特性的航天器姿态控制问题上能够取得理想的控制效果,具有较高的控制精度和较快的系统响应。

An active disturbance rejection controller （ADRC） for spacecraft attitude maneuver is presented based on the third order extended state observer, the transition arranging method and the nonlinear feedback control method and its parameters adjusting is completed. The ADRC is compared with the PD controller in terms of model dependence, disturbance rejection, robustness and propellant cost. The simulation results demonstrate that the ADRC has good performance indexes which are mainly represented by high control precision and quick response in solving the nonlinear and coupling spacecraft attitude maneuver problem.