Study On The Dynamics And Control Of The Flying Tongue In The Non Cooperative Target

On-orbit capture recovery technology because of its for on-orbit servicing,in-orbit assembly,on-orbit charging and debris transfer application potential and cherished the future space missions.Based on the movement characteristics of the target,can be divided into cooperation capture and the capture.For non-cooperative targets such as failure of the spacecraft,the implementation of capture great difficulties and risks.Using hundreds of meters long rope tied to fly tongue non-cooperative target acquisition system because of its security will has great advantages and potential,study of on-orbit non-cooperative target capture tethered capture system dynamics and control is of great importance.This paper mainly studies tethered capture based on target motion characteristics in the process of dynamic modeling and control technology,solve the projection position in target aircraft fly tongue,tongue flying trajectory optimization,fly tongue stability control strategy in the process of capturing key technologies,such as the specific research work are as follows:First,modeling the two tethered satellite system modeling as ruler and sub satellite as a particle,ignoring the effect of flexible tether,considering tether quality and ignore the quality of the tether respectively,establishing the dynamic model of circular orbit two tethered capture system of plane surface angle model and Lagrange equation of the second kind(no quality rope connecting the two particle and two particle quality rope connection),as the subsequent theoretical analysis,trajectory optimization and control method based on.Secondly,the assumptions based on motion capture of spacecraft and the target spacecraft in a limited range,using the CW equation,given to the centroid for the origin of the coordinate system,the establishment of flying tongue capture head release kinetics model,then established the kinematics model of the satellite captured the first phase with six degrees of freedom coupling dynamics the characteristics of the model release mechanism.Finally,the study of the method based on the movement characteristics of target capture.Of two bodies tethered satellite dynamics simulation,using the pseudo gauss method to capture process fly trajectory planning of the tongue,and a six degrees of freedom fly of posture control research.