Vibration Response Analysis Of High-speed Railway Track With Energy Harvesting Devices Based On Classical Electrodynamics

With the development of the Micro-electromechanical Systems and Monitoring System for wireless sensor network,energy harvesting is a field for capturing renewable energy in railway,which has strong potential in prosperous applications.The research institution focus on energy utilization efficiency and structure of generator,thus neglect their connection with the railway.Selecting high-speed ballast railway as the research object,the dynamics and electric calculation of the electromagnetic and electrostatic transducer is carried out by means of dynamics of wheel/rail system and multi-field coupling analysis method.The research result can provide a certain amount of design guidance for Intelligent rail transit which could be self-powered and Self-monitoring through the transducer.In this paper,the main content is as follows:(1)Based on vehicle-track coupling system dynamics,this paper discusses the feasibility of the transducer in dynamic performance requirements and the analysis of vibration response of the parallel-connected and serial-connected track structure.(2)Designed new type rail equipment of the electromagnetic and electrostatic electret transducer,calculated the optimal power and the output voltage of transducer.The study are significant theoretical foundation for self-powered railway.(3)Researchers are devising ways to get the relative displacement which can be imported to the comsol to compute energy production of electromagnetic moving relative to the magnet stator coil.In order to verify calculation results in theory,it carries out shop experiment of the maglev transducer by shaking table model test.(4)This article has touched on the internal connection between the output voltage of electromagnetic and electrostatic transducer and the rail vibration response using a variety of methods.The research result can provide a certain amount of design guidance for Intelligent rail transit which could be self-powered and Self-monitoring through the transducer.