Spacecraft formation control in 6DOF based on finite-time control and disturbance observer
In this paper, a composite control method, consisting of a feedforward compensation part based on disturbance observer (DOB) and a feedback regulation part based on finite time controller, is proposed for 6DOF spacecraft formation control. The design of the composite controller can be divided into two steps: firstly, a continuous finite time controller is designed to stabilize the closed-loop spacecraft formation control system to a set of two equilibria in finite time in the absence of disturbances; secondly, considering the presence of external disturbances, a DOB is introduced to estimate unknown disturbances. The dynamic and disturbance rejection performances of the closed-loop spacecraft formation control system can be improved. A numerical example is provided to demonstrate the effectiveness of the proposed approach.
Haibin Sun Shihua Li Shumin Fei
authors are with School of Automation,Southeast University,Nanjing,210096,P.R.China.
国际会议
哈尔滨
英文
1138-1143
2010-01-08（万方平台首次上网日期，不代表论文的发表时间）