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논문 기본 정보

자료유형
학술저널
저자정보
백재현 (경상국립대학교) 최윤호 (광주과학기술원) 김경중 (광주과학기술원) 이호수 (경상국립대학교)
저널정보
한국로봇학회(논문지) 로봇학회 논문지 로봇학회 논문지 제20권 제1호
발행연도
2025.3
수록면
69 - 76 (8page)
DOI
10.7746/jkros.2025.20.1.069

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초록· 키워드

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The Center of Pressure (CoP) is utilized as an essential indicator for assessing the body’s balance. CoP reflects the state of balance and is important in evaluating balance ability and predicting fall risk. Existing systems are too expensive, less accurate in dynamic conditions, or have limited measurement ability, which is for only the foot’s CoP without fully reflecting the overall body balance. Thus, this study proposes a novel system using Tactile sensors and a deep learning model for less cost and accurately estimating dynamic body CoP. The performance of the suggested CNN-Bi-LSTM model was compared with existing foot CoP estimation models, CNN-LSTM and Bi-LSTM. Model performance was validated using the Leave-One-Out Cross-Validation (LOOCV) method and evaluated with Root-Mean-Squared Error (RMSE) and R² coefficient. The experimental results showed that the CNN-Bi-LSTM model achieved the best performance, with an average RMSE of 7.09 mm in the ML direction and 4.69 mm in the AP direction, and an average R² of 0.99. In comparison, the CNN-LSTM and Bi-LSTM models recorded RMSE values of 11.59 mm and 25.52 mm in the ML direction, and 8.81 mm and 10.90 mm in the AP direction, respectively. Additionally, the RMSE difference value between ML (medio-lateral) and AP (Antero-posterior) was shown to be smaller compared to previous studies on estimating the foot CoP. This result highlights the effectiveness of the CNN-Bi-LSTM model in capturing both spatial and temporal features, surpassing traditional methods and previous models in dynamic conditions. Future research will focus on expanding the system and conducting clinical trials for gait CoP analysis.

목차

Abstract
1. 서론
2. CoP 추정 방법
3. 실험 및 결과
4. 결론
References

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