[Descriptions]
Solenoid valves are used for various mechanical systems. The solenoid valve in this video is used for urban railway brake systems. If this valve is broken down, it can cause fatal and enormous damage to society. Therefore, the reliability and availability of solenoid valves should be improved. To improve the reliability of solenoid valve, we are studying a fault diagnosis of soleonoid valve for condition based maintenance. This video describes the test-bed of solenoid valve and the process of solenoid valve experiment for fault diagnosis.