ABSTRACT
To study the relationship between X-axis relative speed of chase spacecraft and docking time, fuel wastage, spacecraft stability and docking precision during the manual rendezvous and docking (MRVD), two different difficulty level experiments (large or small initial attitude biases) were designed on a MRVD simulation experiment system and twenty male subjects aged 22-40 participated in the experiments. During the experiments of manual control, the data of relative position and attitude changing between the chase spacecraft and the target spacecraft were recorded. At the end of docking, docking time, result and fuel wastage also were recorded. Experiment results show that the X-axis relative speed within different subjects has large diversity during the docking and its stability has high correlation with docking time (r = -.664, P<.01) and fuel wastage (r = -.726, P<.01). At the end of the docking, X-axis relative speed does not influence the docking precision. From initialization state to the end, the X-axis relative speed of two different level tasks has the same changing trend and the optimum control ranges between two different difficulty level tasks have not notable diversity (P>.05). From the results, researchers have the conclusions that the stability of the
suitable control ranges of the X axial relative speed at different phases during the MRVD, the optimum control speed is 0.3m/s ~0.4m/s at tracking control stage, 0.2m/s ~0.3m/s at accurate control stage, 0.15m/s ~0.2m/s at docking moment.
