Research On Sliding Mode Variable Structure Control Based On Magnetic Levitation Ball System

The development speed of the transportation industry is becoming more and more quickly,because of the constant progress of science and technology.In order to satisfy the increasing traffic flow,it is necessary to optimize the transport system constantly,which reflected in reducing the friction between the vehicle and road,improving the utilization rate of vehicles and traffic facilities.To improve the efficiency of the transportation,the most important is to improve the transport velocity of vehicles.Reduce the power consumption of the vehicle noise pollution and prolong service life.With the increasing of transportation requirements,dropped out of maglev technology.The quality of maglev is mainly depends on the performance of control system,therefore to carry out the maglev control method and technology research has great significance.According to the position of the magnetic levitation ball,controller was designed based on the principle of sliding mode control.First of all,consider the mathematical model of maglev ball,according to the stress analysis to build the mathematical model of magnetic levitation ball,which is the basis of control design.Secondly,based on the basic principle of sliding mode control,sliding mode controller is considered,then according to the backstepping control,magnetic levitation ball controller is designed,and the validity of the algorithm is proved by Lyapunov stability theory.Finally,based on the MATLAB software,analyze the system stability,and verify the validity and feasibility of the algorithm.