Active disturbance rejection control for high-speed train speed tracking based on fractional order integral sliding mode
ZHANG Xin
LI Jiangxue
Abstract：To address the issue of reduced control accuracy in high-speed train speed tracking caused by system susceptibility to internal and external disturbances,this study proposes an Active Disturbance Rejection Control(ADRC)scheme for high-speed train speed tracking based on fractional-order inte-gral sliding mode.The scheme introduces improvements to both the Linear Extended State Observer(LESO)and the nonlinear error feedback control law in ADRC.First,in the LESO design,a differen-tial state variable of the total disturbance is incorporated to enhance the disturbance estimation capabil-ity of the observer.Second,Fractional Order Integral Sliding Mode Control(FOISMC)is employed to improve the nonlinear error feedback control law,thereby mitigating chattering in sliding-mode con-trol while enhancing tracking accuracy.Finally,a composite fractional-order integral sliding mode ADRC scheme is developed and applied to track a desired speed profile in simulations using CRH3 train parameters.The proposed scheme is compared with other traditional control methods to verify the tracking performance of the control scheme.The results demonstrate that,under identical condi-tions and external disturbances,the proposed control scheme achieves higher tracking accuracy and stronger disturbance rejection capability than other control schemes,with a maximum speed-tracking error of 0.000 05 m/s.
Keywords：high-speed trainspeed trackingfractional order integral sliding mode controlactive dis-turbance rejection control
Publication Date：2025-12-30
Online Publishing Date：2026-02-02(First online date of this platform, not the publication date of the document)
Pages：9( 101-109 )