PID Controller Based Vertical Coupling Vibration Analysis Of Maglev Vehicle And Guideway

At present,China is promoting the development of high-speed maglev transportation.The vibration response of new generation high-speed maglev system with a speed over 600 km/h is a frontier research field.With the improvement of the speed,the coupling vibration problem of maglev vehicle and guideway will become more prominent and the new generation highspeed maglev system will have higher requirements for guideway vibration response.The analysis of maglev vehicle and guideway coupling vibration response is the theoretical basis for guideway structure design and vehicle suspension control.Therefore,it is necessary to study the corresponding analysis method of maglev vehicle and guideway vertical coupling vibration.To analyze the vertical coupling vibration of maglev vehicle-guideway,an analysis method based on finite element guideway model and proportionintegration-differentiatio(PID)controller-electromagnetic levitation force model is proposed.The whole coupling system is divided into vehicle and guideway two subsystems by electromagnetic levitation force;the coupling vibration of maglev vehicle and guideway is accomplished through electromagnetic levitation force calculated by PID controller;the vibration response of each subsystem is calculated by the mode decomposition method and the four order Runge-Kutta method.To study the coupling vibration characteristics of the whole system,a coupling vibration program is compiled by Mathematica software.To verify the effectiveness of the method,the numerical results of the maglev vehicle-guideway vertical coupling vibration are compared with the test data.The main research contents are included as follows:1.An analysis method based on finite element guideway model and PID controller-electromagnetic levitation force model is proposed.The models of maglev vehicle and guideway are built separately,and the maglev vehicle-guideway coupling vibration is accomplished through electromagnetic levitation force controlled by PID controller,and the whole vertical coupling vibration program is compiled.2.The vertical coupling vibration response of maglev vehicle with the speed of 600 km/h passing through simple supported guideway and double span continuous guideway are analyzed with the program proposed above.3.To meet the future need of maglev line,the vertical coupling vibration response of maglev vehicle passing through three-span continuous beams is analyzed.4.The effect of maglev vehicle speed,vehicle-guideway mass ratio,guideway stiffness and span on maglev vehicle-guideway vertical coupling vibration response are studied based on numerical results.Theoretical studies and numerical calculations show that the analysis method,which built guideway and maglev vehicle model separately and achieved coupling vibration through PID controller to control electromagnetic levitation force,can fully reflect maglev vehicle-guideway active electromagnetic coupling relation of the whole maglev system,obtain the dynamic response of the whole maglev system,analyze vertical coupling vibration of various structural forms guideway effectively.The research has certain theoretical and practical value for vibration analysis and optimization design of maglev guideway structure.