Research On Dynamic Characteristics Of Magnetic Suspension Support System Based On Flexible Support

Maglev support technology is a revolution to traditional support technology.Compared with traditional support technology,it is widely used in modern industrial production due to its significant advantages.Maglev trains and maglev bearings are the most typical applications,which represent linear magnetic suspension systems.And rotating magnetic levitation system.At home and abroad,the research and application of the impact of supporting components on the magnetic suspension performance are mostly for the dynamic characteristics of the supporting components on the magnetic suspension rotor system and the effect of changing the support parameters through the damper on the magnetic suspension performance.There are few studies on the impact of external excitation interference on the performance of the magnetic levitation system,but in actual production and life,any system will be interfered by the sinusoidal excitation,random excitation or step excitation from the outside world,which directly affects the support characteristics of the magnetic levitation system.,Limit the application development of magnetic levitation support technology.Therefore,it is necessary to research this subject.The main research contents of this article are as follows:This article first introduces the development background of the magnetic levitation support technology.According to the current research status of the magnetic levitation support technology,the problems existing in the research on the impact of the support components on the performance of the magnetic levitation system are proposed.Based on the single-degree-of-freedom magnetic suspension ball,a massspring-damping dynamic model was established,and the state-space equation of the single-degree-of-freedom magnetic suspension system model under flexible support was derived.The numerical analysis method was used to simulate the simulation under the simulink module in MATLAB.Secondly,on the basis,the impact of supporting components on the performance of the multi-degree-of-freedom magnetic levitation system was studied,and the magnetic levitation trains,magnetic levitation disks and magnetic levitation bearings introduced in actual industrial products were used to establish two-degree-of-freedom,three-degree-of-freedom and five-degree-of-freedom maglev systems model,to study the influence of the structural parameters of its supporting components and the control parameters of the system on the dynamics of the system.Different supporting foundations are used to adjust the structural parameters,and the PID controller is used to adjust the control parameters.In order to simplify the research process,the effects of coupling parameters and magnetic flux leakage in the magnetic suspension system are ignored.Finally,based on the existing conditions in the laboratory,a three-degree-offreedom magnetic suspension disk system experimental device was used to verify the performance impact of the ground excitation on the three-degree-of-freedom magnetic suspension system and the reliability of simulation analysis.Through the comparative analysis of the experimental results and the simulation results,there are certain errors.The reason may be that the physical model,simulation parameters and control system have been reasonably simplified,the experimental results and the simulation results are basically consistent.The research work in this paper is to keep the magnetic suspension system stable under the external ground excitation conditions,in order to provide a certain technical support for the wide application of the magnetic suspension system in high-end equipment.