• 제목/요약/키워드: Unconditional Frame

검색결과 2건 처리시간 0.015초

Local Interconnect Network(LIN): 프로토콜, 프레임, LIN Description File(LDF) (Local Interconnect Network(LIN): Protocols, Frames, and LIN Description file(LDF))

  • 이성수
    • 전기전자학회논문지
    • /
    • 제27권3호
    • /
    • pp.355-367
    • /
    • 2023
  • Local Interconnect Network(LIN)은 저속의 차량 통신 버스로 윈도우, 도어, 공조, 조명 등 바디 어플리케이션에 널리 사용되고 있다. 본 논문에서는 LIN 버스의 프로토콜과 메시지 프레임에 대해 자세히 설명한다. LIN 버스에서는 기본적으로 메시지 프레임에서 ID와 페이로드만 전송하며, 이들 ID와 페이로드를 해석하는 방법은 LIN Description File(LDF)를 통해서 각각의 LIN 버스마다 다르게 정의한다. 본 논문에서는 LDF의 문법과 예제에 대해서도 자세히 설명한다.

Optimal design of Base Isolation System considering uncertain bounded system parameters

  • Roy, Bijan Kumar;Chakraborty, Subrata
    • Structural Engineering and Mechanics
    • /
    • 제46권1호
    • /
    • pp.19-37
    • /
    • 2013
  • The optimum design of base isolation system considering model parameter uncertainty is usually performed by using the unconditional response of structure obtained by the total probability theory, as the performance index. Though, the probabilistic approach is powerful, it cannot be applied when the maximum possible ranges of variations are known and can be only modelled as uncertain but bounded type. In such cases, the interval analysis method is a viable alternative. The present study focuses on the bounded optimization of base isolation system to mitigate the seismic vibration effect of structures characterized by bounded type system parameters. With this intention in view, the conditional stochastic response quantities are obtained in random vibration framework using the state space formulation. Subsequently, with the aid of matrix perturbation theory using first order Taylor series expansion of dynamic response function and its interval extension, the vibration control problem is transformed to appropriate deterministic optimization problems correspond to a lower bound and upper bound optimum solutions. A lead rubber bearing isolating a multi-storeyed building frame is considered for numerical study to elucidate the proposed bounded optimization procedure and the optimum performance of the isolation system.