The working principle of the traction speed sensor and its interface to train traction system are firstly described,the traction speed sensor faults on Guangzhou Metro Line 5 vehicles are analyzed.To ensure the safe operation,it is necessary to maintain a good working condition and at the same time,accept different solutions according to the faults happened in the operation of Guangzhou Metro Line 5 vehicles.%牵引速度传感器是广州地铁5号线列车的重要组成部分,其稳定、可靠工作对于车辆的正常运行至关重要.列车牵引速度传感器故障以及将导致车辆冲击以及故障车无牵引力等情况发生.从牵引速度传感器的工作原理及与列车牵引系统接口方面入手,结合广州地铁5号线直线电机车运营情况,对牵引速度传感器故障进行全面、深入地探讨.针对牵引速度传感器故障,一方面需要寻求必要的减震措施,保证速度传感器较好的工作环境;另一方面根据故障现象,采用不同的解决方案,才能及时、有效地排除故障,保证列车牵引系统稳定运行.
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