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허건수(Kunsoo Huh),한광진(Kwangjin Han),홍대건(Daegun Hong),김동신(Dongshin Kim),김주곤(Joogon Kim),김종기(Jongki Kim) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Electro-hydraulic brake system (EHB) provides improved braking and stability functions such as ABS, EBD, TCS, ESP, BA, ACC, etc. It also removes mechanical components for freedom of design, reduces maintenance requirements and system weight. But, the EHB system should be at least as reliable as the conventional hydraulic brake system. For this purpose, EHB system contains a hydraulic back-up for the brake function, and in the case of an electrical failure, this hydraulic back-up takes over to provide limited control of the braking. In this paper, the model-based fault diagnosis system is developed for monitor of the brake status based on the analytical redundancy method. The performance of the proposed model-based fault diagnosis system is verified in simulations and demonstrates the effectiveness of the proposed system in various faulty cases.