车载紧急制动触发曲线计算模型分析

列车安全防护曲线计算是车载ATP的关键技术之一。IEEE1474．1^TM标准规定ATP安全制动曲线由紧急制动曲线和紧急制动触发曲线组成。紧急制动触发曲线的速度能够保证列车在侵犯该速度时能在目标点前停车，以保证行车安全。分析CBTC控车模式下，列车从超速、制动到完全静止过程中能量的转移关系，并利用能量守恒原则建立紧急制动触发曲线的计算模型。仿真结果表明，提出的计算模型满足IEEE1474．1^TM中的相关要求，具有一定的实际借鉴意义。

Curve calculation model based on on-board emergency brake triggering

Train safety protection curve calculation is one of the key technologies for ATP on-board. According to the IEEE1474. 1TM standard, ATP safety braking curve consists of emergency braking curve and emergency brake triggering curve. To ensure the safety, if the train speed exceeds the speed of emergency brake triggering curve, the train will trigger the emergency brake and stop in front of the target point. It presents the energy transfer relationship during the process of overspeed running brake and completely stop in the condition of CBTC. By using the energy conservation principle at emergency brake trigger curve calculation model is established. The simulation result shows that the proposed calculation model meets the relevant requirements of IEEE1474. 1TM and is to some extent covered in the practice.