Abstract: This paper makes analysis from the perspectives of vehicle braking performance, line conditions and ATO control strategy based on the test data, and proposes an overall improvement plan. Taking Harbin Metro Line 3 as an example, it analyzes the influencing factors of train stopping accuracy. It also analyzes the specific reason for train stopping deviation and proposes a solution from the perspectives of train stopping principles of onboard ATO, conversion mechanism between electric signal and air pressure signals and line status. The proposed solution can solve the problem of insufficient accuracy of train stopping in this project, and lay a foundation for the efficiency operation of this line in the future.

Key words: first and second phases of Harbin Metro Line 3, train stopping principles of onboard ATO, train stopping accuracy

摘要： 根据测试数据，从车辆制动性能、线路条件以及ATO控制策略角度出发，提出整体改进方案。以哈尔滨地铁3号线为例，对影响停车精度的因素进行分析，从车载ATO停车原理，电、空转换的转换机制，线路状态方面为切入点，分析产生偏差的具体原因，提出解决方案。可以解决项目中停车精度欠佳问题，为后续此线路的高效运营奠定基础。

关键词: 哈尔滨地铁3号线一二期工程, 车载ATO停车原理, 停车精度