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김석준,권순정,오은진,김노석,김상길,이특구 한국의료복지시설학회 2008 의료·복지 건축 Vol.14 No.3
As the elderly population is growing rapidly, guidelines for planning and designing of the elderly housing are required for improving housing environment of the elderly. The purpose of this study is making the basic dimensional standardization of residential spaces for the elderly. The dimensional standard of spaces suggested in this guideline considers characteristics of both aged and the general users. The spaces studied in this research include bedroom, living room, bathroom, kitchen and other circulation spaces in the elderly housing. The design guidelines of furniture, equipment for the aged with sizing of the areas are provided. Finally, applicability of the output is reexamined by implementing this guidelines to the sample planning and design of the elderly housing
권순정,한정한,오은진,김석준,김노석,이특구 한국의료복지시설학회 2008 의료·복지 건축 Vol.14 No.3
The purpose of this study is to suggest optimum size of residents' bedrooms in nursing homes. Bedroom is an essential part of nursing homes because nursing home residents spend most of their times in bedrooms and occupy the largest part of facility area. Therefore it is necessary to set an adequate standard related to resident room area in nursing facilities, which have a great effect on planning longterm care facilities for the elderly. The body dimensions of elderly people and care givers have been collected from the previous study. Based on the body dimensions data, the behaviors of elderly as well as care givers have been analysed. The minimum areas-exclusive of toilets, closets, vestibules and so on - have been proposed from the results of the behavior analysis.
Unified Approach to Continuous and Discrete Nehari Problems
Koon-Seok Lee,Oh-Kyu Kwon 대한전자공학회 1992 대한전자공학회 학술대회 Vol.1992 No.10
A unified approach to continuous and discrete-time Nehari problems, based on recently developed results by the authors for the one-block and Hankel-norm model reduction problems, is proposed. First, we derive discrete-time solutions in delta domain where numerical error is small and then we show that the derived form becomes same as the continuous form when the sampling interval approaches to zero.
Simulation of the Reduction of Force Ripples of the Permanent Magnet Linear Synchronous Motor
Koon-Seok Chung,Yu-Wu Zhu,In-Jae Lee,Kwon-Soon Lee,Yun-Hyun Cho 대한전기학회 2007 Journal of Electrical Engineering & Technology Vol.2 No.2
The significant drawback of the permanent magnet linear synchronous motor (PMLSM) is force ripples, which are generated by the distortion of the stator flux linkage distributions, cogging forces caused by the interaction of the permanent magnet and the iron core and the end effects. This will deteriorate the performance of the drive system in high precision applications. The PMLSM and its parasitic effects are analyzed and modeled using the complex state-variable approach. To minimize the force ripple and realize the high precision control, the components of force ripples are extracted first and then compensated by injecting the instantaneous current to counteract the force ripples. And this method of the PMLSM system is realized by the field oriented control method. In order to verify the validity of this proposed method, the system simulations are carried out and the results are analyzed. The effectiveness of the proposed force ripples reduction method can be seen according to the comparison between the compensation and non-compensation cases.
Simulation of the Reduction of Force Ripples of the Permanent Magnet Linear Synchronous Motor
Chung, Koon-Seok,Zhu, Yu-Wu,Lee, In-Jae,Lee, Kwon-Soon,Cho, Yun-Hyun The Korean Institute of Electrical Engineers 2007 Journal of Electrical Engineering & Technology Vol.2 No.2
The significant drawback of the permanent magnet linear synchronous motor (PMLSM) is force ripples, which are generated by the distortion of the stator flux linkage distributions, cogging forces caused by the interaction of the permanent magnet and the iron core and the end effects. This will deteriorate the performance of the drive system in high precision applications. The PMLSM and its parasitic effects are analyzed and modeled using the complex state-variable approach. To minimize the force ripple and realize the high precision control, the components of force ripples are extracted first and then compensated by injecting the instantaneous current to counteract the force ripples. And this method of the PMLSM system is realized by the field oriented control method. In order to verify the validity of this proposed method, the system simulations are carried out and the results are analyzed. The effectiveness of the proposed force ripples reduction method can be seen according to the comparison between the compensation and non-compensation cases.