인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
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지원사업
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커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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초록·키워드
The main engine of a ship plays a crucial role in providing propulsion. In recent times, there has been growing interest in a data-driven monitoring approach that utilizes sensor data to complement the preventive maintenance-centered maintenance strategy. Previous studies have proposed methodologies that apply anomaly detection algorithms to the sensor data within the main engine. However, these methodologies have limitations as they only focus on analyzing internal sensor data and fail to consider external factors such as operating conditions, marine environment, and weather. Additionally, the use of black-box approaches makes it challenging to determine the specific factors causing anomalies. To address these limitations, this study introduces a method that employs Explainable Artificial Intelligence (XAI) techniques to identify the causes of anomalies in ship main engines. The proposed method involves calculating anomaly scores using Variational AutoEncoder on collected sensor data and training a separate model to predict anomaly scores by considering external factors like operating conditions and weather. Furthermore, the SHAP (Shapley Additive Explanations) technique is utilized to quantify the contributions of external factors to the anomaly scores. This enables the analysis of individual data features and facilitates both local and global analysis for identifying the causes of anomalies and diagnosing faults. The proposed methodology was validated through a case study using data collected from a container ship over an 18-month period, demonstrating its effectiveness in identifying the causes of anomalies in the ship’s main engine.
본문·목차
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