ABNORMALITY DIAGNOSIS DEVICE FOR ROLLING BEARING, WIND POWER GENERATOR, AND ABNORMALITY DIAGNOSIS SYSTEM

ABNORMALITY DIAGNOSIS DEVICE FOR ROLLING BEARING, WIND POWER GENERATOR, AND ABNORMALITY DIAGNOSIS SYSTEM

An effective value operation unit (120) calculates an effective value of a vibration waveform of a bearing, the vibration waveform being measured by using a vibration sensor (70). An envelope processing unit (140) performs envelope processing on the vibration waveform measured by using the vibration...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SAKAKIBARA, Yasuhiko, HIRATA, Junichi, SAKAGUCHI, Tomoya, NINOYU, Nobuyuki
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
BLASTING
HEATING
LIGHTING
MACHINES OR ENGINES FOR LIQUIDS
MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC ORINFRASONIC WAVES
MEASURING
MECHANICAL ENGINEERING
OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
PHYSICS
PRODUCING MECHANICAL POWER
TESTING
TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES
TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR
WEAPONS
WIND MOTORS
WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS
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Beschreibung
Zusammenfassung:An effective value operation unit (120) calculates an effective value of a vibration waveform of a bearing, the vibration waveform being measured by using a vibration sensor (70). An envelope processing unit (140) performs envelope processing on the vibration waveform measured by using the vibration sensor (70), thereby generating an envelope waveform of the vibration waveform. An effective value operation unit (160) calculates an effective value of an AC component of the envelope waveform generated by the envelope processing unit (140). A diagnostic unit (190) diagnoses an abnormality of the bearing based on the effective value of the vibration waveform calculated by the effective value operation unit (120) and the effective value of the AC component of the envelope waveform calculated by the effective value operation unit (160).