自动控制文献翻译——摘要：车站控制系统的仿真平台上，模拟轨道电路的占用来提供基本条件对模拟设备使用权或产生轨道电码，轨道电路仿真存在的问题是超过1000米的轨道电路不止一个，为了解决这个问题，论文提出了一种方法来精确识别占用的轨道电路区段，在这种算法中，使用信号机作为参考点，结合从模拟的计算机联锁设备中接收到的线路信息，并依据列车行驶里程的增加或根据列车运行方向来发现列车占用的轨道电路区段。参考点总是在变化，站内或站外被占用的轨道电路被定义为一条线路，这种方法可以在任何一个复杂的路线找到占用的轨道电路，和减少当参考点变化时累积误差，并能清除列车行驶里程，从而解决了真实与模拟轨道电路之间的差异。这种方法也降低了在模拟轨道电路的复杂性和奠定了动车运行控制系统仿真平台的基础。

1轨道电路原理

在动车的控制系统中，定义轨道电路占用区段是用RBC（无线闭塞中心）来计算MA（移动管理权）的前提，它也是最基本的对于列车定位。轨旁子系统发送轨道电路占用信息给CBI（计算机联锁系统）。同时把轨道电路占用信息发送给TCC（列控中心），列控中心根据信息将产生轨道电路编码序列，并把编码序列发送到轨旁子系统，当列车经过时，轨道信息将被传送到TCR（轨道电路接收器）。轨道电路占用过程如图1所示。

图1

车载设备工作在C2模式下时，应答器和轨道电路一起来完成检测列车位置和为计算列车运行权力提供关键信息，在模拟过程中，在任意两辆列车中没有通信，因此通过控制信号来通知各自的位置，以免两辆列车相撞。

2轨道电路仿真存在的问题：

真正的轨道电路使用钢轨作为导线，在它们的末端使用电气绝缘或机械绝缘，并连接到股道变压器和相应的电气设备，如图2所示：图2 

当轨道电路空闲时，线路正常，发送设备和接收设备均正常工作时，信号将从发送设备出来沿着一条钢轨传送到接收设备，并沿着另一条钢轨流回发送设备，形成轨道电路。由于轨道电路未被占用，接收设备能从发送设备中得到充分的信号电流，根据信号信息的特征来控制相应的防护设备改变相应的功能，并表明轨道空闲状态。轨道电路在分路状态下的工作原理为：当轨道电路工作在正常情况下，和被列车车轮分路时，由于列车分路电阻小于接收设备的输入阻抗，所以流经接收设备的信号电流明显下降，接着轨道电路防护设备被接收设备控制，表示出占用状态，因此保障了列车在线路上的安全运行。

在轨道电路仿真中，列车占用靠测量获得。列车车载设备通过模拟轨道电路通信，并通过它发送列车运行里程，模拟轨道电路根据列车出发点、列车长度......

Abstract:In the simulation platform of high-speed train control system, it is necessary to simulate the track circuit occupation in order to provide basic conditions for other simulated equipment to calculate movement authority or generate track circuit code. A problem with the simulation of track circuit is that there may be more than one track circuit sections corresponding to one kilometer post. To solve this problem, this paper proposes problem, this paper proposes an algorithm to precisely identify the occupied track the occupied track circuit sections. In this algorithm, by using the signal machine the signal machine as a reference origin, in combination with the route the route information received from the simulated computer based interlocking equipment, based interlocking equipment, train mileage is increased or decreased based on train running direction to find the occupied track circuit sections. The reference origin is always changing and the occupied track circuits inside or outside the station are identified by a unified “route”. This algorithm can find the occupied track occupied track circuit in a route of any complexity and reduce the accumulate the accumulated error by using the changing reference origin and clearing the train mileage, thus solving the difference between the real and simulated track circuit. This algorithm reduces the complexity of simulating the occupation state of track circuit and lays a foundation for the construction of high-speed train control system simulation platform.

1 The Role of Track Circuit Simulation

In high speed train control system, identifying the occupied track circuit sections is the precondition for RBC(Radio Block Center) to calculate MA (Movement Authority and it is also the basis for train positioning. In a station, trackside subsystem sends the track circuit occupation information to CBI (computer based interlocking). While in asection, trackside subsystem sends the track circuit occupation information to TCC ((Train Control Center), based on which the TCC will calculate the track circuit code sequence, and sends the code sequence to trackside equipment. When a train passes by the code sequence will be sent to TCR (Track Circuit Receiver). The track circuit occupation process is as shown ......