Design And Dynamics Of Reconfigurable Connection Base On Flux Pinned Effect

Space in-orbit assembly technology is a key technology used for constructingspacecrafts to explore the universe thoroughly and has the type of manual in-orbitassembly and autonomous in-orbit assembly. But manual in-orbit assembly has somedisadvantages like High cost, high risk and operation failing easily. The autonomous in-orbit assembly also has a large latency automatic control. So it is necessary toinvestigate the new approaches of on-orbit assembly applying for future space missions.The high tempetature superconductor as a kind of non ideal type II superconductorshave the characteristic of flux pinned effect，which can form a passively stable,non-contacting and reconfigurable connection and provides a new investigation idea for thein-orbit assembly. Therefore, a reconfigurable interface is proposed for modularspacecraft assembled in orbit.The high temperature superconductor can stably suspended in magnetic field,forming a non-contacting connection with the magnet rigidly. A double modulesreconfigurable interface is designed base on the flux pinned interface constructed by thehigh temperature superconductor and magnet, and the reconfigurable strategies is alsoanalyzed. In addition, a kind of extended reconfigurable interface is designed base onthe double modules reconfigurable interface.On theoretical study, the image dipole model is improved by flux pinned coefficientand induction coefficient. The magnetic field of the Ampere current loop is calculatedby the Gauss-Legendre algorithm. Then, the electromagnet is instead of Amperecurrent loop. The flux pinned interaction between the magnet module andsuperconductor module in the reconfigurable process is calculated base the improvedimage dipole model. And factors include pinned coefficient, current intensity, currentloop radius and field cooling height which influence the flux pinned interaction isstudied by simulation. Finally, the dynamics model of interface reconfiguration isproposed base on single damper and force model between high temperaturesuperconductor and magnet and the plane rigid body dynamics theory. Then, throughsimulating and analyzing the dynamic response of reconfiguration under differentconditions, the feasibility of reconfiguration is verified.In the part of experiment, a electromagnet with strong magnetic field is designed usedfor simulation reconfiguration experiment on ground. The reconfigurable interface ofexperiment is constructed by this electromagnet and YBCO. The reconfigurableexperiment is showed on the microgravity air floated platform, the images of themodule in the reconfiguration is collected by high speed camera, then the relation curves about position and time is obtained by processing the images. the feasibility ofreconfiguration is verified qualitatively and quantitatively through the experiment.