Condition Monitoring of Rotating Machine with a Change in Speed Using Hidden Markov Model
- Condition Monitoring of Rotating Machine with a Change in Speed Using Hidden Markov Model
- 장미; 이종민; 황요하; 조유종; 송재복
- Hidden Markov Model; Rotating Machine; Condition Monitoring; Compensation of Rotational Speed; 은닉 마르코프 모델; 회전 기계; 상태 진단; 회전 속도 보상
- Issue Date
- VOL 22, NO 5, 413-421
- In industry, various rotating machinery such as pumps, gas turbines, compressors, electric motors,
generators are being used as an important facility. Due to the industrial development, they make
high performance(high-speed, high-pressure). As a result, we need more intelligent and reliable machine
condition diagnosis techniques. Diagnosis technique using hidden Markov-model is proposed for
an accurate and predictable condition diagnosis of various rotating machines and also has overcame
the speed limitation of time/frequency method by using compensation of the rotational speed of
rotor. In addition, existing artificial intelligence method needs defect state data for fault detection.
hidden Markov model can overcome this limitation by using normal state data alone to detect fault
of rotational machinery. Vibration analysis of step-up gearbox for wind turbine was applied to the
study to ensure the robustness of diagnostic performance about compensation of the rotational speed.
To assure the performance of normal state alone method, hidden Markov model was applied to experimental
torque measuring gearbox in this study.
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