RISS 학술연구정보서비스

검색
다국어 입력

http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.

변환된 중국어를 복사하여 사용하시면 됩니다.

예시)
  • 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
  • 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
닫기
    인기검색어 순위 펼치기

    RISS 인기검색어

      검색결과 좁혀 보기

      선택해제
      • 좁혀본 항목 보기순서

        • 원문유무
        • 원문제공처
          펼치기
        • 등재정보
        • 학술지명
          펼치기
        • 주제분류
        • 발행연도
          펼치기
        • 작성언어
        • 저자
          펼치기

      오늘 본 자료

      • 오늘 본 자료가 없습니다.
      더보기
      • 무료
      • 기관 내 무료
      • 유료
      • KCI등재후보

        유압식 인버터 제어기를 위한 하이브리드 제어기 구현

        韓權相,崔秉旭 전력전자학회 2002 전력전자학회 논문지 Vol.7 No.1

        인버터를 적용한 유압식 시스템은 펌프의 마찰과 실린더 패킹 및 탑승 카와 레일의 마찰특성으로 인하여 PID 제어기로는 제어가 되지 않는 데드 존이 생기게 된다. 본 논문에서는, 우선 유압시스템으로 구동되는 유압식 시스템의 극저속 속도영역(zero-crossing)에서 속도가 제어되지 않는 원인이 되는 실린더의 마찰특성을 고찰하고, 이러 한 실린더의 마찰특성으로 인하여 기존의 PID 속도제어기로 제어 시 발생되는 문제점을 해결하기 위한 줌잉 퍼지룰을 포함한 퍼지제어기를 설계한다. 마지막으로, 설계된 퍼지제어기와 기존의 PID 제어기를 결합하여 보다 성능이 향상된 하이브리드 퍼지제어기를 설계한다. 제안된 하이브리드 퍼지제어기는 정속주행구간에서는 정상상태제어성능이 우수한 PID제어기를 적용하고 PID제어기로 제어되지 않는 극저속 속도구간에서는 퍼지제어기를 적용하여 유압식 시스템이 실린더의 마찰특성으로 인하여 극저속 속도영역(zero-crossing)에서 속도가 제어되지 않는 문제를 해결하고, 극저속 영역에서 뿐 아니라 정상상태를 포함한 전 운전영역에서의 제어성능이 우수함을 시뮬레이션과 실험을 통하여 보인다. Due to the friction characteristics of cylinders and the rail of a passenger car, in the system actuated with hydraulic systems, there exist dead zones, which can not be controlled by a PID controller. In this paper, the friction characteristics of a cylinder is examined, which may cause the abrupt increase of the acceleration in the zero-crossing speed region. To overcome the drawbacks of a PID controlled hydraulic system, a zooming fuzzy logic controller is designed and finally an improved hybrid controller is proposed. The proposed controller is composed of the PID controller and the zooming fuzzy controller. The effectiveness of the proposed control scheme is shown by simulation and experimental results, in which the proposed hybrid control method yields good control performance not only in the zero-crossing speed region but also in the overall control region including steady-state region.

      • 청소년의 태권도 참가동기와 학교생활 만족도 간의 관계

        한권상,임상호 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.3

        To develop the relationship study between lifestyle satisfaction of school and motivation of participation into taekwondo of the adolescents, this study was foused to develop the relationship among subscales of lifestyle satisfaction of school-committee of lifestyle satisfaction of school, satisfaction of department of school, and satisfaction of school environment and motivation of participation-emotional motivation, hobby motivation, physical motivation and social motivation of the adolescents. The study tool for measuring lifestyle satisfaction of school was a 5 point Likert Scale qusetionnaire adjusted for this research propose developed by sung-hee, Cho(2001) and chae-hee, Lee(2000). Analysis was done by the Multiple Co-variate Anlysis Method. The results of this study was a follows: Firstly, There was showed relationship between committee of lifestyle satisfaction of school and motivation of participation in taekwondo of the adolescents. Secondly, There was showed relationship between satisfaction of department of school and motivation of participation in taekwondo of the adolescents. Thirdly, There was showed relationship between satisfaction of school environment and motivation of participation in taekwondo of the adolescents.

      • 태권도 선수들의 운동 만족이 정신건강 및 생활 만족에 미치는 영향

        한권상,손창남,임상호,류경희,장지현,김태우 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.4

        The purpose of this study is to determine how a Taekwondo player's athletic satisfaction affects his/her psychological health and overall personal happiness. A questionnaire survey was carried out on a sample group of 200 students attending colleges located in Seoul and Gyeonggi Province. Then, 23 questionaries deemed not trustworthy were eliminated, leaving 178 questionaries for analysis. The questionnaire, which contained total 128 questions, showed the confidence level falling between .5241 and .8945 (Cronbach's alpha). The study, which relied on frequency analysis, t-test, One-way ANOVA, and Scheffe test, produced the following results. First, athletic satisfaction showed a statistically significant difference (5% range) depending on sex, school year or athletic experience. Second, psychological health resulted in a statistically significant difference (5% range) depending on sex or athletic experience while no difference was noticed regarding school year. Third, happiness in life showed a statistically significant difference (5% range) depending on sex or school year while no difference was noticed with regard to athletic experience.

      • 스포츠센터 직원의 의사소통과 직무성 및 직무만족의 관계

        한권상,임상호 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.6

        This study is designed to shed a light on the relationship between communication, job performance and job satisfaction on sport center employee 250 employees were chosen from sport center located in Seoul. Among 250 questionnaires distributed and collected, 23 were excluded from the study because they were not either thoughtfully or completely answered. As a result, only 227 questionnaires were adopted and analyzed. The reliability test by using Cronbach's alpha method has the following results: the reliability in upward communication is .9132., the reliability in downward communication is .8505, the reliability in horizontal communication is .8963, the reliability in job satisfaction is .8282, the reliability in pay, promotion is .8406, the reliability in work environment is .8007 and the reliability in association is .7988. This paper utilizes the statistical data analysis methods including correlation analysis and regression analysis. The findings acquired based on the aforementioned research methods and data analysis are as follows: First, job performance showed a significant difference about upward communication, and upward communication had 28.2%(R²=.282) of influence about job performance. Second, job performance showed a significant difference about downward communication, and downward communication had 23.6%(R²=.236) of influence about job performance. Third, job performance showed a significant difference about horizontal communication, and horizontal communication had 30.0%(R²=.300) of influence about job performance. Fourth job satisfaction showed a significant difference about upward communication, and upward communication had 28.3%(R²=.283) of influence about job satisfaction Fifth, job satisfaction showed a significant difference about downward communication, and downward communication had 26.1%(R²=.261) of influence about job satisfaction. sixth, job satisfaction showed a significant difference about horizontal communication, and horizontal communication had 18.4%(R²=.184) of influence about job satisfaction. seventh, job performance showed a significant difference about job satisfaction and job satisfaction had 43.6%(R²=.436) of influence about job performance.

      • 사회체육과 학생의 자원봉사와 자아존중감이 욕구수준에 미치는 영향

        한권상,손창남,임상호 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.2

        The purpose of this study was for investigating the relation between level of need and volunteer activity, self-esteem. The participants are students who are major in sport and leisure. The multiple regression was used for this study and the level of need explained by sex, volunteer experience and self-esteem. In the result of analysis, only stabilization need with sex is statistical significant. Then there are statistical significant in accomplishment need for volunteer experience and level of self-esteem. Using the MANOVA, the results are as following. There are significant differences in levels of need that according to sex, sources and self-esteem. And there is interaction effect in sex*self-esteem only for accomplishment need.

      • 유압식 인버터 엘리베이터의 속도제어를 위한 하이브리드 퍼지제어기의 설계

        한권상,김병화,안현식,김도현,Han, Gueon-Sang,Kim, Byoung-Hwa,Ahn, Hyun-Sik,Kim, Do-Hyun 대한전자공학회 2001 電子工學會論文誌-SC (System and control) Vol.38 No.1

        인버터를 적용한 유압식 엘리베이터 시스템은 펌프의 마찰과 실린더 패킹 및 탑승카와 레일의 마찰특성으로 인하여 PID 제어기로는 제어가 되지 않는 데드존이 생기게 된다. 본 논문에서는, 이러한 문제를 해결하기 위하여 먼저, 퍼지제어기와 PID제어기를 혼용하는 하이브리드제어기를 이용하는 방법을 시도한다. 그러나, 인버터를 적용한 유압식 엘리베이터는 비선형성이 강한 시스템이므로 두 제어기의 출력이 절환 되어야 하는 경계층이 다수인 경우가 대부분인데 반하여, 기존의 하이브리드제어기는 두 제어기의 출력이 절환되는 특정구간의 경계층을 제외하고는 전체 운전구간에서는 어느 한 제어기에만 영향을 받게 되므로 제어성능에 문제를 가지게 된다. 이에 따라 본 논문에서는, 출력혼합기의 출력비를 퍼지로직에 의하여 변경시키는 새로운 퍼지하이브리드제어기를 제안하여 기존의 하이브리드제어기의 문제점을 해결한다. 제안된 퍼지하이브리드제어기는 시스템의 상태에 따라서 두 제어기의 출력비를 달리하여 사용하는 방법으로 향상된 제어성능을 달성한다. 시뮬레이션 결과를 통하여, 제안된 퍼지하이브리드제어기가 극저속 속도영역에서 뿐 아니라 정상상태를 포함한 전 운전 영역에서의 제어 성능이 우수함을 보였다. Due to the friction characteristics of cylinders and the rail of a passenger car, in the elevator actuated with hydraulic systems, there exist dead zones, which can not be controlled by a PID controller. To overcome the drawbacks, in this paper, we first try a hybrid controller which switches between a fuzzy logic controller and a PID controller. However, because the hybrid control scheme uses only a single type controller, except the switched layer, the high control performance can not be achieved. To solve this problem, we propose a new type fuzzy hybrid control scheme, which outputs of the output mixer arc controlled by a fuzzy logic. The hydraulic elevator system controlled by inverters has more then one switched layers due to the highly nonlinear characteristics. The proposed fuzzy hybrid control scheme achieves improved control performances by using both controllers with weighted outputs depend on the system status, to achieve improved control performances. The effectiveness of the proposed control scheme arc shown by simulation results, which the proposed fuzzy hybrid control method yields good control performance not only in the zero crossing speed region but also in the overall control region including steady-state region.

      • 유압식 인버터 엘리베이터의 속도제어를 위한 하이브리드 슬라이딩모드제어기

        한권상,박재삼,안현식,김도현,Han, Gueon-Sang,Park, Jae-Sam,Ahn, Hyun-Sik,Kim, Do-Hyun 대한전자공학회 2001 電子工學會論文誌-SC (System and control) Vol.38 No.6

        인버터를 적용한 유압식 엘리베이터 시스템은, 펌프와 실린더 패킹 및 탑승카의 마찰특성으로 인하여 PID 제어기로는 제어가 되지 않는 데드존이 발생하게 된다. 본 논문에서는 이러한 문제를 해결하기 위하여 슬라이딩모드제어기와 PID 제어기를 혼용하여, 출력혼합기의 출력을 절환시키는 구조를 가진 새로운 하이브리드제어기를 제시하여 제어성능을 향상시킨다. 먼저, 인버터를 적용한 유압식 엘리베이터의 속도제어를 위한 슬라이딩모드제어기 설계방법을 제시하고, 이어서 하이브리드 제어기의 설계방법을 제시한다. 제안된 하이브리드 슬라이딩모드제어기가 극저속 속도영역에서 뿐만 아니라 정상상태를 포함한 전 운전 영역에서 제어 성능이 개선됨을 시뮬레이션 결과를 통하여 보인다. Due to the friction characteristics of pump, cylinder packing and passenger car, in the elevator actuated with hydraulic inverter-fed systems, there exist dead zones, which cannot be controlled by a PID controller. To overcome the drawbacks, in this paper, we propose a new hybrid control scheme, which switches the modes between a sliding mode controller and a PID controller. The proposed hybrid control scheme achieves an improved control performance by using both controllers. We first propose a design method of sliding mode controller for a hydraulic elevator system controlled by inverters, then fellowed by a design method of a hybrid sliding mode control scheme is proposed. The effectiveness of the proposed control scheme are shown by simulation results, which the proposed hybrid control method yields better control performance then the PID controlled scheme, not only in the zero-crossing speed region but also in the overall control region including steady-state region.

      • 유압식 인버터 제어기의 속도제어를 위한 퍼지기반 하이브리드 슬라이딩모드 제어기 설계

        한권상,최병욱,안현식,김도현 제어·자동화·시스템공학회 2003 제어·자동화·시스템공학논문지 Vol.9 No.3

        19세기 西進東漸의 파도 속에서 국가의 자립과 근대화를 위해 몸소 힘썼던 兪吉潛과 福澤??論의 사상 가운데 그들의 政淪論을 한국과 일본의 근대화 방향 차이를 중심으로 살펴보고자 한다. Due to the friction characteristics of pump, cylinder packing and passenger car, in the elevation system actuated with hydraulic inverter, there exist dead zones, which cannot be controlled by a PID controller. To overcome the drawbacks, in this paper, we propose a new hybrid fuzzy-sliding mode control scheme, which controls the controller output between a sliding mode control output and a PID control output by fuzzy control method. The proposed hybrid control scheme achieves an improved control performance by using both controllers: We first propose a design method of the hybrid controller for a hydraulic system controlled by inverters, then propose a design method of a hybrid fuzzy-sliding mode control scheme. The effectiveness of the proposed control scheme is shown by simulation results, in which the proposed hybrid control method yields better control performance then the PID controlled scheme, not only in the zero-crossing speed region but also in the overall control region including steady-state region.

      연관 검색어 추천

      이 검색어로 많이 본 자료

      활용도 높은 자료

      해외이동버튼