Model based fault detection of hydraulic brake system components

Straky, Harald; Weispfenning, Thomas; Isermann, Rolf

doi:10.23919/ecc.1999.7099976

Cited by 4 publications

(1 citation statement)

References 2 publications

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“…It estimates the displacement of valve stem. The fault is diagnosed when the difference between the estimated displacement and the armature stroke calculated by a mathematical model of solenoid valves proposed by Straky and Weispfenning (1999) exceeds the limit. This method has a merit that it does not need any additional sensors because it measures the input voltage and current of coil.…”

Section: Review Of Fault Diagnosis Of Solenoid Valvesmentioning

confidence: 99%

Solenoid Valve Diagnosis for Railway Braking Systems with Embedded Sensor Signals and Physical Interpretation

Seo

et al. 2016

PHM_CONF

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This paper proposes a fault diagnosis method for solenoid valves in urban railway braking systems. For dominant failure modes of solenoid valves, sensor signals including electrical current, and input and output pressure were acquired and analyzed. The physical behaviors of the solenoid valves are modeled analytically. Numerous forces including magnetic, elastic, and gravity forces are incorporated in the model. With the analytical model and sensor signals, health indices are defined. The health indices are used to quantify the condition of the solenoid valves with different failure modes. Finally, a fault diagnosis method is proposed with the health indices and failure criteria. We anticipate that this study can help decrease maintenance costs and improve reliability of urban railway braking systems.

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Section: Review Of Fault Diagnosis Of Solenoid Valvesmentioning

confidence: 99%