Train Change-speed Control Based on Smith Principle

This paper introduces one of the methods——Smith overlapped control method, which is used in the automatic city railway train change_speed control,combining one kind of underway train tractive model,labor,the paper deduces the transfer function of the control system,and obtained the parameters of Smith control method,by experiments.It proves no overshoot and responds quickly,achieving the favorable dynamic performance.It can meet the require of high performance in trailway train change speed control,and it is of convenience to implement in real time control of the project and is one of the practical methods in project.