【摘要】 针对城际线路中广泛存在的小半径曲线导致的动车组曲线通过性能不足及轮轨严重磨耗问题，现以城际动车组为对象，在其轴箱与转向架布置横向作动器，形成主动径向转向架。该作动器能够驱使轮对横向移动，使得车辆沿纯滚动线运动。搭建了作动器系统模型，并采用分数阶PI(proportion integration)控制器验证了在负载突变干扰情况下，作动器对期望轨迹跟踪的快速性、准确性和稳定性。利用SIMPACK和MATLAB/SIMULINK软件，建立了主动径向城际动车组的动力学模型。通过分析轮对冲角、磨耗数、轮轨横向力和脱轨系数等动力学指标，评价了运行速度和曲线半径对车辆曲线通过性能的影响。此外，采用Jendel磨耗模型评估了车辆通过500 m曲线半径时的轮轨磨耗性能。研究结果表明：将纯滚线距线路中心线的距离作为作动器的位移控制目标是合理的。当曲线半径为500 m时，与传统被动控制相比，新型主动径向控制车辆的轮轨横向力最大值降低了12%,轮对冲角最大值减少了8%,脱轨系数下降了20%,车轮磨耗数最大值减少了12%。1位轮对外侧和内侧车轮磨耗深度分别降低了31%和12%,曲线外侧和内侧钢轨的磨耗深度分别减少了20%和15%。因此，该型主动径向转向架显著提升了车辆的曲线通过性能，并有效减少了轮轨磨耗。更多还原

【Abstract】 Here, aiming at the problem of insufficient curve passing performance and severe wheel-rail wear caused by small radius curves widely present in intercity lines, taking intercity EMUs as the study object, a transverse actuator was now arranged between vehicle axle box and bogie to form an active radial bogie. This actuator could drive wheelset to move laterally, and make vehicle move along a pure rolling line. The actuator system model was constructed, and a fractional order PI(proportion integration) controller was used to verify the rapidity, correctness and stability of the actuator in tracking the expected trajectory under load mutation interference. The dynamic model of an active radial intercity EMUs was established using software SIMPACK and software MATLAB/Simulink. Effects of operating speed and curve radius on the train’s curve passing performance were evaluated by analyzing dynamic indexes of wheel hedge angle, wear number, wheel-rail lateral force and derailment coefficient. In addition, Jendel wear model was used to evaluate wheel-rail wear performance of train passing through a curve with radius of 500 meters. The study results showed that it is reasonable to take the distance between pure rolling line and line centerline as the displacement control objective of actuator; when curve radius is 500 meters, compared with traditional passive control, the wheel-rail lateral force of the new active radial control vehicle reduces by up to 12%, the wheel hedge angle reduces by up to 8%, the derailment coefficient reduces by 20% and the wheel wear reduces by up to 12%; wear depths of outer and inner wheels of the first wheelset decrease by 31% and 12% respectively, and wear depths of curve outer and inner rails decrease by 20% and 15%, respectively; therefore, this type of active radial bogie significantly improves the train’s curve passing performance and effectively reduces wheel-rail wear.更多还原