上海航天
上海航天
상해항천
AEROSPACE SHANGHAI
2012年
4期
14-18,58
,共6页
空间交会%椭圆轨道%不确定系统%滑模控制%鲁棒控制
空間交會%橢圓軌道%不確定繫統%滑模控製%魯棒控製
공간교회%타원궤도%불학정계통%활모공제%로봉공제
Space rendezvous%Elliptical orbit%Uncertain system%Sliding mode eontrol%Robust control
提出了一种在缺少绝对轨道信息时的航天器椭圆轨道自主交会方法。用Lawden方程描述椭圆轨道的两星相对运动关系,将方程中的时变参数单独归类。在时变参数无法获知时,视其为不确定量,构成不确定系统。用不确定系统的鲁棒滑模控制方法设计了椭圆轨道自主交会的控制律,并证明了不确定系统为渐进稳定。仿真结果表明：在仅有相对状态信息条件下,设计的控制律能实现椭圆轨道航天器的自主交会。
提齣瞭一種在缺少絕對軌道信息時的航天器橢圓軌道自主交會方法。用Lawden方程描述橢圓軌道的兩星相對運動關繫,將方程中的時變參數單獨歸類。在時變參數無法穫知時,視其為不確定量,構成不確定繫統。用不確定繫統的魯棒滑模控製方法設計瞭橢圓軌道自主交會的控製律,併證明瞭不確定繫統為漸進穩定。倣真結果錶明：在僅有相對狀態信息條件下,設計的控製律能實現橢圓軌道航天器的自主交會。
제출료일충재결소절대궤도신식시적항천기타원궤도자주교회방법。용Lawden방정묘술타원궤도적량성상대운동관계,장방정중적시변삼수단독귀류。재시변삼수무법획지시,시기위불학정량,구성불학정계통。용불학정계통적로봉활모공제방법설계료타원궤도자주교회적공제률,병증명료불학정계통위점진은정。방진결과표명：재부유상대상태신식조건하,설계적공제률능실현타원궤도항천기적자주교회。
An approach for spacecraft autonomous rendezvous without orbit information in the elliptical orbit was developed in this paper. Lawden equation was used to describe the relative motion of two spacecrafts, and all the variable parameters in the equation were classified. Under the assumption of the variable parameters unavailable, the uncertain system was constructed. Based on the uncertain system, a control law using robust sliding mode control was designed. And the uncertain system was proved to be asymptotieally stable under this control law. The simulation results showed that the robust sliding mode control could realize autonomous rendezvous in the elliptical orbit with relative state information only.
