Shift2Rail创新制动系统

Shift2Rail-Innovative Braking System

为匹配高性能无线传输技术在轨道列车上的使用,实现制动系统的虚拟验证和认证,对传统制动系统进行功能细化分解,定义适用于线控制动的设计需求并对部分功能进行整合和相关安全性分析,以此开发出一套高SIL等级的电子控制单元;同时基于对轮轨不同黏着实测数据的收集,对恢复黏着系统进行性能需求分析,介绍实验室黏着建模过程及仿真模型,开发出一套防滑自适应算法并配合撒砂装置以满足低黏着条件下制动力的有效施加;另外对新型摩擦副进行匹配研发,开发电机械制动设备和长寿命低磨耗的制动盘、制动闸片以及无摩擦低噪音的涡流制动系统。最后对制动系统的评估和验证流程进行分析,提出对其进行虚拟验证和认证的流程和方法。

A set of high SIL level electronic control unit was developed to realize the virtual verification and authentication of the braking system based on high-performance wireless transmission technology.For this purpose,the traditional braking system has been functionally refined and decomposed,and the design requirements applicable to brake-by-wire system have been defined.Part of the functions have been integrated,and the relevant safety analyses have been carried out.At the same time,performance requirements for adhesion system recovery have been analyzed based on the various collected wheel-rail adhesion data,and the laboratory adhesion modeling process and simulation model have been introduced,and a set of anti-skid adaptive algorithms has been developed to realize the effective application of braking force under low adhesion conditions with sanding devices;Furthermore,a novel type of friction pair,electro-mechanical braking apparatus,durable,low-wear brake discs and brake pads,as well as frictionless,low-noise eddy current braking systems have been developed.Finally,the evaluation and validation process of the braking system is analyzed,and a process and methodology for its virtual validation and certification are proposed.