空间翻滚目标捕获的双滑模面控制律与地面微重力试验

The relative attitude and orbit coupled control problem for capturing tumbling target in space is studied in this paper. To improve the control performance of the system impacted by bounded disturbance, measurement errors, limited control input, parameter uncertainty and so on, a dual sliding-mode surface control (DSMSC) method is designed, with the stability of the closed-loop system also proved. Numerical simulations are carried out to compare the performances of the single sliding-mode surface control (SSMSC) law and the DSMSC. The DSMSC is indicated to remarkably lower the steady statue control bias and noise. Furthermore, a set of ground micro-gravity semi-physical verification system is established, and a mission scenario is designed with the relative motion between the chaser and target constrained in the orbit plane of the target. Then, using this semi-physical verification system, the efficiency of the DSMSC is verified in the real-time closed-loop guidance navigation and control system under ground-simulated micro-gravity dynamics.