列车转弯运行时所需通道宽度是评价列车机动性的一个重要指标。对同一列车,转向操纵不同,其转向运行时所需通道宽度也不同。因此,当列车转向操纵系统按某一特定规律变化控制列车转向时,可使其运行时所需通道宽度达到最小。在列车不失去控制的前提下,对一定弯道半径的公路,列车作所需通道宽度(也称最大通道宽度)最窄的转向运行过程,我们称之为“最佳转向运行”。这种运行过程中扫过空间宽度最大处为一列车转向的稳定阶段,即由传统的静态法决定的所谓“极限通过位置”运行状态,它的各转向运行参数可通过这种运行状态的“环行图”(图1)由 The width of the lane required for train turning operation is an important indicator for evaluating train maneuverability. For the same train, different steering maneuvers, the steering width required when the road is also different. Therefore, when the train steering system to control the train steering according to a particular law changes, it can run the required channel width to a minimum. In the train without losing control of the premise, for a certain radius of the road, the train required channel width (also known as the maximum channel width) of the narrowest steering operation, we call the “best steering operation.” In this operation, the maximum space width is swept to a stable stage of train steering, that is, the so-called “limit passage position” operating condition determined by the conventional static method. Its steering operating parameters can be obtained through the “ Ring diagram ”(Figure 1) by