中国空间科学技术2012，Vol.32Issue(5)：27-33,83,8.DOI:10.3780/j.issn.1000-758X.2012.05.005
轮控欠驱动航天器的姿态控制特性
Control Property of the Spacecraft Attitude Underactuated by Wheels
摘要
Abstract
Small-time local controllability (STLC) and stabilizability of the spacecraft attitude underaetuated by reaction wheels (RWs) were investigated with the wheel speeds as control inputs. Firstly, with the wheel speeds being treated as inputs, the conservation constraint of the total angular momentum of the spacecraft and RWs was directly brought into the dynamics of the system. Then nonlinear controllability and stabilizability theory were utilized to analyze the control property of this dynamics with one and two RWs respectively. The results show that the STLC of the spacecraft attitude is possible only when two non-coaxial RWs are available. Simultaneously, the system cannot be asymptotically stabilized by a time-invariant smooth feedback, but it still can be asymptotically stabilized at least by a piecewise continuous feedback. Accordingly, a nonsmooth control law based on quaternion was constructed to stabilize the spacecraft attitude with wheel speeds under the saturation limits, which not only confirms the theoretical outcomes but also is practically useful.关键词
姿态控制/反作用飞轮/局部可控/渐进镇定/欠驱动航天器Key words
Attitude control Reaction wheel Local controllability Asymptotic stabilization Underaetuated spacecraft引用本文复制引用
桂海潮,徐世杰,金磊,张军..轮控欠驱动航天器的姿态控制特性[J].中国空间科学技术,2012,32(5):27-33,83,8.基金项目
国家自然科学基金(10902003),国家973计划,重点实验室基金资助项目 （10902003）
