Application of self-coupling PID control in magnetic levitation system
LIU Teng-fei
JIANG Qi-long
LUO Yu
LIU Tong
Abstract：In view of the problems of unstable track and large load disturbance,a maglev control model based on the self-coupling PID(SC-PID)control is established in this paper,which has been successfully applied to physical suspension in the maglev system,and the superiority of SC-PID control is verified.The method of SC-PID control is to map the nonlinear maglev system into an equivalent linear system,and then introduce the velocity factor to coupling the proportional-integral-differential links together,so that each gain of SC-PID control has the same physical dimension.Finally,this paper uses fuzzy rules to adjust the control parameters.Simulink simulation and experiments show that SC-PID control relative to the traditional PID control,fractional PID control(FOPID)has better anti-interference ability,in the load disturbance larger still can maintain a small adjustment error;Strong adaptability to track unsmoothness,fast and accurate tracking performance is still maintained under the bad condition of track unsmoothness.
Keywords：self-coupling PIDmagnetic levitation systemspeed factorSimulink
Publication Date：2025-04-30
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 695-702 )