A high solid hydroxyl polyester resin has been developed,which is used to prepare polyester-polyurethane top coatings for the city railway train,with high performance,such as high gloss,impact resistance,high hardness,good weathering resistance,low smoke toxicity and easy cleanness.

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.

Influence of fastener failure on responses of vertical vibration of urban rail transit train-floating slab track system;

Application of articulated bogie in urban rail vehicles;

Compared with the brake systems in Japan,Gemary and UK(NABCO,KNORR and Westing House),the composition and functions of the contemporary urban rail vehicle brake system adopted in China\'s urban rail transit are introduced,meanwhile suggestions and analysis are presented on the selection of urban rail vehicle brake system.

Study on EMI-free of STP and its application in mass transit vehicles;

Discussion on application prospect of single-axle bogie in urban vehicles;