【作者】 李彬；

【导师】 郜春海；

【作者基本信息】 北京交通大学 ， 交通信息工程及控制， 2014， 硕士

【摘要】 近年来,为了满足日益增长的公共交通需求,我国城市轨道交通发展迅猛,其中基于通信的列车控制系统(Communication Based Train Control, CBTC)作为主流信号系统被广泛应用。CBTC线路开通运营前应进行现场测试,以此验证系统是否满足功能需求、设计规范、运营需求等。当前,CBTC系统的现场测试工作没有统一的测试标准,尤其是缺乏规范、系统的现场测试序列生成方法。国产CTCS-3级列控系统及欧洲ETCS列控系统的测试序列生成研究大多基于系统状态对系统进行形式化建模,以形式化的方法生成测试序列。形式化方法的限制条件是系统状态可识别、可建模,但是目前CBTC系统需求变化较大,实现方式差异也较大,其系统状态难以全面识别和建模,且现场测试环境复杂,部分系统状态不可达,故该方法难以适用于CBTC现场测试工作。目前,CBTC现场测试仍以人工的方式编排现场测试序列,其工作量大、效率低,大大延缓了城轨线路的开通,现场测试序列作为现场测试工作的核心部分,亟待加强研究。本文对CBTC现场测试的研究对象(即测试线路,测试案例和测试列车)进行分析,将Test-trip的概念引入CBTC系统现场测试,提出了基于Test-trip的CBTC现场测试序列生成方法,其组织框架包括：(1)测试区段划分：利用基于计轴器的划分方法,将测试线路划分为多个测试区段,以更为精确的方式描述各测试案例执行的位置。(2)测试案例执行条件提取：分析测试案例的执行过程,提取各测试案例执行期间所需的线路资源和列车运行状态。(3)测试区段特征提取：分析测试区段线路特征,提取各区段的特征量。(4)测试区段与测试案例匹配：根据测试案例的执行条件及测试区段的线路特征,将各测试案例分配至与其对应的测试区段,以备编排现场测试序列。(5)测试序列编排。按照基于测试列车运行状态接续的原则,对测试位置已经确定的测试案例进行串联,形成多条覆盖现场测试案例的Test-trip。本文设计并实现了基于Test-trip测试序列生成方法的CBTC现场测试序列辅助生成工具,并针对目标测试线路及目标测试案例,使用该工具生成现场测试Test-trip,结果证明该方法可行,满足CBTC现场测试要求。最后,本文分析了该测试序列生成方法的改进之处,并提出本工作下一步的研究方向。更多还原

【Abstract】 In recent years, in order to meet the growing demand for public transport, the development of urban rail transit in China is very rapid. And the communication based train control system (CBTC) has been more and more widely used as a mainstream control system in urban rail lines. Before the operation of urban rail line, field tests should be conducted on-site to verify that the system meets the functional requirements, design specifications, operational requirements, etc. Currently, there are few uniform and accepted field test standards for CBTC system, especially the standardized and systematic field test sequence generation method.The research of test sequence generation for domestic CTCS-3train control system and ETCS (European train control system) is mainly based on the system state to model the system through formal method, and then test sequence is generated. The restrain of formal method is that the system state can be identified and modeled. However, the functional requirement of CBTC system varies frequently, and the difference of implementation for CBTC is also large, hence, the system states of CBTC can hardly be identified and modeled completely. Formal method is more suitable for indoor test where all the system states can be simulated on the simulation and test platform, while for the field test of CBTC whose test environment is complex and part of the system states cannot be identified and reached, it does not suit any more. At present, CBTC field test sequence is still made by artificial way, which is inefficient, full of workload, and would significantly delay the operation of the urban rail lines. Therefore, the research of CBTC field test sequence generation, as a core part of the field test work, is emergent and must be strengthened.Considering the research status of CBTC field test sequence generation, this paper carries out analysis of the CBTC field test (including test line, test cases and test trains), introducing the concept of Test-trip into the CBTC system field test, defining the test sequence that can be executed in the field as Test-trip. Finally, a new CBTC field test sequence generation method based on Test-trip is proposed, whose framework is described as follows.(1) Test section division method:The test line is divided into multiple test sections through the division method based on axle to describe the execution position of each test case more accurately. (2) Execution condition extraction method of test case:The execution process of each test case is analyzed to extract line resources and states of the test train required in the execution process.(3) Feature extraction method of test section:The feature of test line is analyzed to extract feature parameters for each test segment.(4) Method to match test section and the test case:According to the feature of test line and the execution condition of test case, each test case will be assigned to the corresponding test section in support of generating test sequence.(5) Method to create test sequence:Based on the principle of coherent states of test train, test cases are connected to generate several Test-trips, which cover all field test cases.To verify the feasibility of this CBTC field test sequence generation method, an auxiliary generation tool for CBTC field test sequence is designed and implemented. Aiming at target line and target test cases, this tool is used to generate Test-trips. The result shows that our method is feasible and meets the requirements of CBTC field test. Finally, this paper analyzes the deficiency of this test sequence generation method and proposes the task and direction for the next-phase work.更多还原