Abstract: The rigid multibody dynamic model of the tilting train, the nonlinear dynamic model of the pantograph and the FEM model of the catenary are set up. The pantograph base is connected with the carbody roof through a guide way and rollers. The lateral active control of the pantograph is realized by applying the servo-motor to control the motion of the pantograph base along the guide way. When the train runs on straight tracks, the vertical motion of the pantograph frame is adjusted by controlling the pantograph lateral motion on the guide way, in order to reduce the fluctuation of the pantograph-catenary contact force. When operating on curved tracks, the pantograph should tilt in the opposite direction of the carbody to make the lateral position of the pantograph-catenary contact point in the working range of the pantograph head. In the mean time, the vertical and roll motions of the pantograph fame should be as small as possible, so that to make the contact force as normal as the conventional train. Two shapes of guide way are designed. Numerical simulation is adopted to analyze the control performance and the pantograph-catenary vibration. It can be seen from the results that the effect of the lateral active control is evident whether on the straight tracks or on the curved tracks. The minimum value of the contact force is increased efficiently, the number of pantograph and catenary separations is reduced, and at the same time the mean value of the contact force is not changed.

Key words: Dynamic simulation, Pantograph lateral active control, Pantograph-catenary coupled vibration, Tilting train, the time-averaged streamwise velocity, turbulence intensity, vortex structure, wind-turbine wake, wind shear