Research On Wireless Energy Transmission Technology Of Submunitions

With the complex and changeable world situation and the wide application of high and new technology in the military field,countries all over the world attach great importance to the research and development of sub-munition weapon system,among which the energy transmission technology of bullet fuze is very important,which determines the normal follow-up work of bullet fuze.At present,there are two energy transmission modes,wireless and wired.Wireless energy transmission has a simpler structure,no direct contact of equipment,convenient use,and strong adaptability to the environment.Therefore,this paper adopts wireless energy transmission technology to realize non-contact energy transmission of mother projectile to bullet.In this paper,the application of magnetic resonance coupling wireless energy transmission technology in submunition is analyzed from three aspects: theory,simulation and experiment.Firstly,the overall research scheme of the system is determined based on the actual situation in the submunition.By analyzing the single transmitter-single receive and single transmitter-multiple receive wireless energy transmission systems,the magnetic resonance coupling energy transmission model and equivalent circuit are established,and the mathematical expressions of the transmission efficiency and output power of the system are obtained.Then,the finite element electromagnetic simulation software Maxwell was used to simulate coils with different winding modes,and the winding mode of coupling coils was determined by analyzing their magnetic field distribution.Then,the factors affecting the overall transmission efficiency of the system were obtained according to the magnetic field changes in the sub-munition.The hardware circuits of transmitter and receiver are designed.Based on the overall architecture of the transmission system,the control module,driving circuit,inverter circuit and rectifier and filter circuit are designed respectively.Finally,according to the theoretical research and simulation results of its transmission characteristics,the overall simulation model and experimental platform of the system are built.Through the relevant simulation and experimental research,the influence of the coupling coefficient between the receiving coils and the number of receiving coils on the overall transmission efficiency of the system is analyzed,and the improvement scheme is proposed to provide the theoretical basis and technical support for the energy transmission of the mother-bullet.