摘要
提出了一种在缺少绝对轨道信息时航天器椭圆轨道自主交会的鲁棒参数化设计方法.利用带有时变参数的Lawden方程描述椭圆轨道下追踪航天器与目标航天器的相对运动关系.在假设时变参数无法获得的情况下,将方程中的时变参数单独归类建立椭圆交会的不确定模型,然后基于鲁棒参数化方法,采用特征结构配置和模型参考跟踪理论设计航天器椭圆轨道自主交会的鲁棒控制律.本文所设计的鲁棒控制律是一个不随时变参数变化的定常反馈控制律,结构简单,便于工程实现.仿真结果表明,在只有相对运动信息的情况下,所设计的控制律能够实现椭圆轨道下航天器的自主交会.
A robust parametric design method for spacecraft autonomous rendezvous in elliptical orbit without orbit information is developed. Lawden equation with time-varying parameters is used to describe the relative motion of the chaser and the target. With the assumption that the time-varying parameters are unavailable, all the variable parameters in the equation are classified and the elliptical rendezvous model with uncertainties is given, then the eigenstructure assignment approach and the model reference theory based on the robust parameterized method are employed to design robust control law for autonomous rendezvous of spacecrafts on elliptical orbit. To simplify the autonomous rendezvous control system, a constant feedback controller, which stabilizes the system and does not vary with the time-varying, is proposed. Simulation results indicate that the pro- posed control law can realize autonomous rendezvous in the elliptical orbit.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2011年第1期1-6,共6页
Journal of Harbin Institute of Technology
基金
国家自然科学基金资助项目(60710002)
机器人技术与系统国家重点实验室资助项目(SKLRS200801A03)
关键词
空间自主交会
鲁棒参数化方法
特征结构配置
模型参考跟踪
控制器优化
space autonomous rendezvous
robust parametric approach
eigenstructure assignment
reference model tracking
controller optimization
