한국정밀공학회:학술대회논문집 (Proceedings of the Korean Society of Precision Engineering Conference)
- 한국정밀공학회 2000년도 추계학술대회 논문집
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- Pages.717-720
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- 2000
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- 2005-8446(pISSN)
메시지 스케줄링을 이용한 Brake-by-wire 시스템의 Redundancy Management
Redundancy Management of Brake-by-wire System using a Message Scheduling
- 윤종운 (부산대 대학원 지능기계공학과) ;
- 김기웅 (부산대 대학원 지능기계공학과) ;
- 김태열 (부산대 대학원 지능기계공학과) ;
- 김재구 (부산대 대학원 지능기계공학과) ;
- 이석 (부산대 기계공학부)
- Yune, J. W. (Int. Mech. Eng. Dept., PSNU) ;
- Kim, K. W. (Int. Mech. Eng. Dept., PSNU) ;
- Kim, T. Y. (Int. Mech. Eng. Dept., PSNU) ;
- Kim, J. G. (Int. Mech. Eng. Dept., PSNU) ;
- Lee, S. (Mech. Eng. Dept., PSNU)
- 발행 : 2000.11.01
초록
Event-driven communication protocols such as CAN(Controller Area Network) have inherent packet delays due to the contention process for the use of network medium. These delays are stochastic in nature because most packets arrive at random time instants. The stochastic property of the delay adversely influences the control system's performance in terms of stability, responsiveness and steady-state error. Another problem for safety-critical application such as brake-by-wire systems is the reliability of the communication modules that can fail abruptly. This paper deals with two methods to overcome the above problems : (i) scheduling method that can maintain packet delays under some acceptable level, and (ii) redundancy management of communication modules that prescribes dual-redundancy modules' behavior when one of them fails.