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AUTOSAR 플랫폼 기반 ECU에서의 CAN 메시지 처리 S/W 구조 최적화 연구
강성훈(Sung-hoon Kang),김병곤(Byung-gon Kim),정준채(Joon-chai Jung) 한국자동차공학회 2018 한국자동차공학회 학술대회 및 전시회 Vol.2018 No.11
Recently, the development of automotive field SW is being carried out based on the AUTOSAR platform. The AUTOSAR platform provides two methods for receiving CAN messages. Those are Interrupt method and Polling method. Interrupt method is vulnerable to CAN DoS attacks. And in case of Polling method, it does not satisfy specification about processing unexpected N_PDU Signal defined in ISO 15765-2. In this paper, we demonstrated the disadvantages of two types of CAN receiving methods basically provided by AUTOSAR through experiments. In addition, we proposed a CAN receiving method that compensates for the disadvantages. And we confirmed that the existing disadvantages are solved by using the proposed method. The method proposed in this paper is considered to be applicable to all ECUs receiving CAN signals, not air suspension ECUs. However, period of polling and method about processing the event message will need to be modified a little in accordance with the system..
미지입력관측기를 이용한 현가시스템의 상태 및 노면 추정
김철중(Cheol-Joong Kim),박준성(Jun-Sung Park),정준채(Joon-Chai Jung) 한국자동차공학회 2019 한국자동차공학회 학술대회 및 전시회 Vol.2019 No.11
This paper proposes state and road estimation method by using the unknown input observer. In order to state estimate by using previous method such as Luenberger observer, known system input should be necessary. However, in the suspension system such as quarter car model, since unknown road input is included which can be considered disturbance of the system, state estimation cannot be achieved by using the previous method. Therefore, in the paper, not only system state but also road profile can be estimated by using the unknown input observer method. This method can be used for the vehicle suspension control design such as damping control or body motion control, in the future. The simulation and experimental results are presented to validate the proposed method.