自动控制文献翻译——对英国的读者来讲，单词ATC指的是“列车自动控制”，在二十世纪六十年代通用AWS（自动预告系统）出现之前，曾在英国一些线路上使用ATC代表预告系统。在美国ATC也指的是列车自动控制，而且还代表了一种更现代的概念，其包括ATP（列车超速防护），ATO（列车自动驾驶）和ATS（列车自动监测）。

ATC已广泛用于描述自动化铁路的组成中。当然，ATC通常仅运用于地铁中。这篇文章讲述了四种不同的自动化铁路概念之间的关系。

作为定义，ATC（列车自动控制）指的是一个完整的系统，包括其他所有或者至少一部分自动化的功能，而且包括一些人工操作。因此，ATC是一个包含ATP ，ATO和ATS的综合系统。

ATC 综合系统

ATC综合系统有多种组成方式，但是许多系统通常使用类似的方式。

一个固定闭塞的列车自动控制系统的基本组成，其包括了三个主要的部分：ATP（列车超速防护），ATO（列车自动驾驶）和ATS（列车自动监测）。保持列车间的追踪距离的要求是由ATP实现的，ATP在每个闭塞分区都设有一个控制单元。这个控制单元从前一闭塞分区接收信息，然后将所接收的信息转换为被控制分区所对应的速度级，再把这一速度级信息传输到轨道。列车接收在轨道上传输的速度级信息。传输系统可以是轨道电路，环线或者是沿轨铺设的（应答器）。若要了解更多的内容，请看ATP编码传输部分”。 

ATP控制单元接收的数据主要用于显示在区间......

To the UK reader, the letters ATC refer to "Automatic Train Control", which was the title given to the warning system tried on some UK lines before the general introduction of the AWS (Automatic Warning System) in the 1960s. In the US it also refers to Automatic Train Control but it refers to a more modern concept where the system includes ATP (Automatic Train Protection), ATO (Automatic Train Operation) and ATS (Automatic Train Supervision). It has been adopted around the world to describe the architecture of the automatically operated railway. Of course, it is usually applied only to metros. This page looks at the relationship between the four different automatic train concepts.

As a definition, ATC (Automatic Train Control) refers to the whole system which includes all the other automatic functions and, for some of these functions at least, also includes a degree of manual intervention. ATC therefore, is the package which includes ATP, ATO and ATS. 

The ATC package.

There are a number of ways to assemble the parts of an ATC package but a common format used by many systems.

A fixed block automatic train control (ATC) system contains its three main components - ATP (Automatic Train Protection), ATO (Automatic Train Operation) and ATS (Automatic Train Supervision). The basic safety requirement, to keep trains a safe distance apart, is performed by the ATP, which has a control unit for each block. This control unit receives the data from the blocks ahead, converts that into a speed limit for the block it controls and?sends the speed limit data to the track.? The train picks up the data using the codes transmitted along the track.?The transmission system can be track circuits, loops or beacons (baizes) located along the track.?For more details see ATP Code Transmission. 

The data received by the ATP control unit is usually limited to indicating that a train is in the block or the speed limit currently imposed in the......