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CAN 시간지연에 대한 아라고 진자의 위치제어 성능분석
박태동(Taedong Park),이재호(Jeaho Lee),윤수진(Sujin Youn),박기헌(Kiheon Park) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.10
In this paper, the position control performance of networked control systems is analyzed when time delay through the network is considered. Integrating a control system into a network has great advantages over the traditional control system which uses point to point connection: it allows remarkable reduction in wiring, makes it easy to install and maintain the system, and improves compability. However, a networked control system has the critical defect that network uncertainties. such as time delay, can degrade the control system's performance. Therefore, the major concern of a networked control system is analyzing the effect of network uncertainties. This paper is concerned with PID controller performance for stability region, critical stability region and unstability region under the time delay in the Controller Area Network.
박태동(TaeDong Park),이재호(Jeaho Lee),백산림(Shanlin Bai),박기헌(Kiheon Park) 대한전기학회 2008 정보 및 제어 심포지엄 논문집 Vol.2008 No.1
Demand for reliability and safety in modem systems has been increased in the research on fault detection and isolation. At traditional approaches to fault detection, redundant sensors have been used. More advanced methods are the residual analysis of signals which are created by the comparison between the actual plant behavior and the output response of a mathematical model. However, mathematical system models are difficult to obtain by using physical laws. These problems can be solved by system identification. In this paper, the transfer function of a direct current motor is estimated by using the system identification. And, the efficiency of the fault detector design is verified by using experiments.