Research On Hybrid Magnetic Levitation Bearing Failure Mechanism And Control System

Magnetic levitation bearings, whose characteristics are high speed, no friction, lowpower consumption and non-polluting are used in satellite, aerospace, train, industrialprocessing, flywheel energy storage and other areas. Hybrid magnetic levitation bearingdue to its simple structure, simple control method, increasingly used in various fields.First of all, this article detailed analysis principle of operation of hybrid magneticlevitation bearing. Hybrid magnetic levitation bearing has a high precision machiningand assembly demands, installation error will cause great impact on its controlperformance. In this paper, detailed analysis structural installation errors analysis,through the theoretical analysis and experimental verification simulation, propose aneffective improvement program which is l mounting limit bearing.Current-mode control model has advantages of strong stiffness, and the model issimple, simple PID control will be able to meet the requirements. Current-mode controlmodel is used for hybrid magnetic levitation bearings for the theoretical analysis andsimulink modeling and simulation. Simulation results show that float and stability in thesuspension process, the applied external disturbance force600N, magnetic bearing cantrack the given stable suspension points. According to the theoretical simulation of PIDcontrol parameters, using the portability strong#C language program, designed anddeveloped based on TMS320F28335hybrid magnetic bearing’s controller.Finally, through experiments on hybrid magnetic levitation bearings tests the floatprocess, choice stable suspension points. Through experimental analysis, consistent withthe simulation results to achieve the goal, and get the result of stable suspension.