This paper presents the mechanism and potential advantages of flux pinned docking interface mainly composed of a high temperature superconductor and an electromagnet. In order to readily assess the connection characteristics of flux pinned docking interface, the force between a high temperature superconductor and an electromagnet needs to be investigated. Based on the magnetic dipole method and the Ampere law method, the force between two current coils can be compared, which shows that the Ampere law method has the higher calculated accuracy. Based on the improved frozen image model and the Ampere law method, the force between high temperature superconductor bulk and permanent magnet can be calculated, which is validated experimentally. Moreover, the force between high temperature superconductor and electromagnet applied to flux pinned docking interface is able to be predicted and analyzed. The connection stiffness between high temperature superconductor and permanent magnet can be calculated based on the improved frozen image model and Hooke's law. The relationship between the connection stiffness and field cooling height is analyzed. Furthermore, the connection stiffness of the flux pinned docking interface is predicted and optimized, and its effective working range is defined and analyzed in case of some different parameters.

The docking principle based on flux pinning is detailed and flux pinned docking mechanism is designed. In order to perform the space docking experiment on earth readily and cheaply, the simulated docking experimental platform with a flux pinned docking mechanism is first designed and established. By performing the single docking experiment on the simulated docking experimental platform, the dynamic docking time response of flux pinned docking mechanism is directly extracted by using the high speed camera and the real time tracking software TEMA. The analytical result of docking time response can assess whether the collision between two spacecraft modules of flux pinned docking mechanism happens or not. Furthermore, the docking frequency response can be extracted based on Fast Fourier Transformation. Based on the docking frequency response and the half power method, the dynamic connection characteristics (connection stiffness, damping ratio, and damping coefficient) of flux pinned docking mechanism can be calculated and analyzed, which estimates its performance. Based on the single docking experiment, the multiple docking experiments can be carried out to validate the reusable feasibility and to acquire connection characteristics of every time docking. The experimental demonstration system is designed and established in order to support future space docking for CubeSat sized spacecraft based on flux pinning and to accumulate some useful experimental datum.

Facing on the complex electromagnetic environment of electrical equipment, based on the bio-anti-interference characteristics of neuron system, the bio-inspired electromagnetic protection is proposed in order to improve and assist the traditional electromagnetic protection method. In order to analyze the dynamical characteristics of electrical signal transfer process of neuron system, Hodgkin-Huxley (HH) model is adopted to calculate the action potential of single neuron. The initial value problem used in the parameters of Hodgkin-Huxley model is studied in order to satisfy the physiological phenomenon. The stability of HH model is analyzed to assess the dynamic stable performance of neuron. Based on the investigation of single neuron, a simple neuron system consisted of two neurons and one synapse is studied. The compassion between the action potential of posterior neuron and different synapse is performed, which explores how the mathematic models of different synapses influence the action potential. The relationship between action potential of posterior neuron and coupling strength of simplified synapse is calculated to explain the diversity of electrical signal output of neuron system. These numerical results enable to provide some datum for deeply developing the bio-inspired electromagnetic protection and well designing the bio-inspired circuit.