关键词: 地铁车辆, 曲线通过性能, 线路曲率测量, 主动径向, 作动器

Abstract: A new curvature measurement based on the yaw angle of secondary suspension of rail vehicle is proposed, which can be used to calculate the radius of curve, which provides a key parameter for active radial control, on the position of front bogie, also a micro yaw angle measuring device in view of the situation is designed. A control method of active radial for urban rail vehicle is presented, in addition an integrated wheel-set positioning device suitable for the active radial bogie is designed and developed as the carrier structure of the actuator. The dynamic simulation of active radial control is completed, the result shows:the method of curvature measurement is reliable, the measured value fits the actual value with high synchronism and small relative error, which meets the requirements of engineering application; The control method of active radial is reasonable, all the key indexes of bogie are greatly improved when curve passing, so the curving performance is highly enhanced, which solves the contradiction between the running stability and the curving performance of the bogie, also the output force and output power of the actuator are greatly reduced. The research results can provide engineering references for the curvature measurement of track and the active radial of rail transit.

Key words: active radial, actuator, ail vehicle, curvature measurement, curving performance