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일시적 불확실성을 갖는 DC 모터 시스템을 위한 유한 기억 구조 필터링
권석준(Seok Jun Kwon),김평수(Pyung Soo Kim) 제어로봇시스템학회 2018 제어·로봇·시스템학회 논문지 Vol.24 No.6
In this paper, the finite memory structure (FMS) filter is applied for the estimation filtering of DC motor systems with temporary uncertainties. A couple of temporary uncertainties, model uncertainty and unknown input, are considered for the FMS filtering. Extensive computer simulations are performed for both nominal system and temporarily uncertain system. It is shown that the FMS filter can be better than the infinite memory structure (IMS) filter for temporary uncertainties. Of course, the IMS filter can outperform FMS filters after the effect of temporary uncertainties completely disappears. It is also shown that there can exist the trade-off between the estimation error and the tracking ability in terms of the window length.
권석준(Seok Jun Kwon),김영갑(Young Kab Kim),최병학(Byung Hak Choi) 한국사회체육학회 2011 한국사회체육학회지 Vol.0 No.43
In this study, users of bowling centers located in Yeongju city Gyeongsangbuk-do were surveyed with written questionnaires using the simple random sampling method. Among the 397 questionnaires completed and returned, undependable questionnaires were excluded and l total of 366 questionnaires were analyzed and used, processed with statistical methods such as SPSS 12.0, frequency analysis, descriptive analysis, correlation analysis, and regression. The following conclusionis suggested by using above method and processes. First, the impact of motives for participation on leisure satisfaction can be elaborated as: On psychological satisfaction, enjoyment had a significant impact; on educational satisfaction, health and fitness; on social satisfaction, skill development; on recreational satisfaction, health and fitness; on environmental satisfaction, skill development. Second, the impact of motives for participation on exercise addiction can be elaborated as: On withdrawal symptoms, skill development had a significant impact; on exercise needs, enjoyment; on emotional attachment, physical condition. Third, the impact of leisure satisfaction on exercise addiction can be elaborated as: On withdrawal symptoms, educational satisfaction had a significant impact; on exercise needs, environmental satisfaction; on emotional attachment, psychological satisfaction.