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- 저자 : 김기량(Gi-Ryang Kim) (검색결과 4 건)
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재생 진동 제어를 위한 적응형 퍼지 모델 제어 알고리즘에 관한 연구
김기량(Gi-Ryang Kim) 산업기술교육훈련학회 2019 산업기술연구논문지 (JITR) Vol.24 No.4
In this study, an experiment for the control of vibration generated in ship engines is performed. It is known that vibration is sensitive to changes in a system s internal variables of marine vibration. Therefore, it is difficult to design a sophisticated disturbance remover, and engines are also susceptible to generate noise. The adaptive fuzzy model (AFM) algorithm is proposed to eliminate the nonlinear disturbance caused by the vibration of engines. The vibration control system of the diesel engine is constructed using the AFM algorithm and MR damper. Using MATLAB s Simulink, we compare the proposed model with the internal model principle (IMP), which is applied to stable systems with periodic disturbance, and demonstrate the usefulness of the AFM algorithm.
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고등학생의 한의약 의료 이용 형태 및 인식에 관한 연구
정성헌,김기량,정준수,성현경,이주아,강소현,김영지,공경환,고호연,Jung, Sung-Hun,Kim, Gi-Ryang,Jeong, Joon-Soo,Sung, Hyun-Kyung,Lee, Ju-Ah,Kang, So-Hyeon,Kim, Young-Ji,Kong, Kyung-Hwan,Go, Ho-Yeon 대한예방한의학회 2016 대한예방한의학회지 Vol.20 No.1
Objectives : This study is to research on usage patterns, recognition of system to Korean medicine among high school students who are the potential future medical consumer. Methods : Based on the questionnaire used by KIHASA(Korea Institute for Health and Social Affairs) in 2011 and KHIDI(Korea Health Industry Development Institute) in 2014, modifications were made to make questionnaire more suitable for this research. This self-administered questionnaire was conducted among 1,025 highschool students of 3 high schools in Ulsan city on september, 2015. Except 19 cases which considered statistically insignificant or with unreliable responses, 1,007 cases were analyzed by p-paired test and ANOVA test through the SPSS 22.0 for Win program. Results : Most of the high school students(66.5%) do not have an experience on Korean medical care. The number of students' first experience on Korean medical care is the largest during their elementary school (34.9%), which means the treatment was mostly for restorative reasons like growth care. The later the time of their first experience on Korean medical care, the higher ratio was shown on their recent utilization of Korean medical care. Korean medicine was rarely covered in most cases of public health education at school, and this public health education and usage pattern on Korean medicine have positive correlation. Compared 'Group who have used Korean medical care in 1 years except recent 3 months' to the 'Group who have used Korean medical care in 3 recent months', the former showed higher recognition in Korean medical care and insurance system. Conclusions : The proportion of Korean medicine is as low as 4.5% to whole medical market, and most of the consumers are senior. In addition, the aging phenomenon of Korean medical consumer have been continued. This specialized study on usage patterns and recognition among youth can be the basic research data which can be used for promotion, education and establishment of health policy and health care system.
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이형기,김송현,김현수,김기량,김관형,Lee, Hyung-ki,Kim, Song-Hyun,Kim, Hyun-soo,Kim, Gi-ryang,Kim, Gwan-Hyung 한국정보통신학회 2015 한국정보통신학회논문지 Vol.19 No.11
발전기의 전압조정장치(AVR)를 이용하여 전압을 조절하는 방식은 기존 아날로그방식과 교체중인 디지털방식을 나눌 수 있다. 일반적으로 브러쉬레스형의 여자시스템을 이용하여 전압을 조절할 경우 전부하에 대하여 전압변동을 작게 하여야 한다. AVR의 제어방법으로 PID(비례-적분-미분)제어방식이 많이 사용되고 있다. 그러나 이 제어기법은 제어대상에 대하여 제어기의 파라미터를 조절하여 과도응답을 줄이고 있다. 따라서 제어대상이 달라질 경우 다시 제어기의 파라미터를 다시 설정해야하는 문제점이 있다. 본 연구에서는 제어대상의 파라미터 변동에 대하여 제어기의 파라미터를 재설정 필요없이 iPID(intelligent PID)제어기를 이용하여 발전기 AVR시스템에 적용하여 전부하 시에도 전압변동이 작은 응답을 얻도록 설계하고 시뮬레이션과 실험을 통하여 과도응답을 개선하였다. Method for regulating voltage using a generator voltage regulating device (AVR) is divided in an existing analog system and a digital replacement. Typically, to adjust the voltage by using a brushless excitation system of the type to be reduced for a voltage change under all. The control method of the AVR as a PID (proportional-integral-differential) control method is widely used. However, the control scheme is to reduce the transient response of the control parameters of the controller to the control object. Therefore, if the control target should change, there is a problem, reset the parameters of the controller again. In this study, without having to reset the parameters of the controller for the parameter variations to be controlled iPID (intelligent PID) using a controller designed to obtain a generator AVR system voltage variation is small in response to full load is applied to and through simulations and experiments improved transient response.
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