KR100866352B

A diagnosis method for the shutoff valve of a hydraulic actuator is provided to prevent the abnormal operation of the hydraulic actuator when the shutoff valve is malfunctioning or fault. A diagnosis method for the shutoff valve of a hydraulic actuator includes a step(S110) for mounting a pressure s...

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Bibliographische Detailangaben
1. Verfasser:	YANG, CHEON KYU
Format:	Patent
Sprache:	eng
Schlagworte:	MEASURING MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE PHYSICS TESTING TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR
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Beschreibung
Zusammenfassung:	A diagnosis method for the shutoff valve of a hydraulic actuator is provided to prevent the abnormal operation of the hydraulic actuator when the shutoff valve is malfunctioning or fault. A diagnosis method for the shutoff valve of a hydraulic actuator includes a step(S110) for mounting a pressure sensor on one side of a pilot oil supply part of the shutoff valve, a step(S120) for supplying the pilot oil to the pilot oil supply part through a pilot port of the shutoff valve, a step(S130) for measuring the pressure of the pilot oil exerting on the pilot oil supply part with the pressure sensor, and a step(S140) for diagnosing damage to a delta weal the pilot oil supply part by using the measured pressure of the pilot oil.