파라미터 맵을 이용한 차량용 인휠 전동기의 설계

김해중(Hae-Joong Kim),이충성(Choong-Sung Lee),홍정표(Jung-Pyo Hong) 한국자기학회 2015 韓國磁氣學會誌 Vol.25 No.3

Electric Vehicle (EV) can be categorized by the driving method into in-wheel and in-line types. In-wheel type EV does not have transmission shaft, differential gear and other parts that are used in conventional cars, which simplifies and lightens the structure resulting in higher efficiency. In this paper, design method for in-wheel motor for automobiles using Parameter Map is proposed, and motor with continuous power of 5 kW is designed, built and its performance is verified. To decide the capacity of the in-wheel motor that meets the automobiles requirement, Vehicle Dynamic Simulation considering the total mass of vehicle, gear efficiency, effective radius of tire, slope ratio and others is performed. Through this step, the motors capacity is decided and initial design to determine the motor shape and size is performed. Next, the motor parameters that meet the requirement is determined using parametric design that uses parametric map. After the motor parameters are decided using parametric map, optimal design to improve THD of back EMF, cogging torque, torque ripple and other factors is performed. The final design was built, and performance analysis and verification of the proposed method is conducted by performing load test.

직선 왕복 액추에이터의 구조에 따른 설계 및 특성 검토

김해중(Hae-Joong Kim),이충성(Choong-Sung Lee),홍정표(Jung-Pyo Hong) 대한전기학회 2015 전기학회논문지 Vol.64 No.4

This paper provided two types of design method on moving core type LOA and one type of design method on moving coil type LOA, and compared and examined each of its characteristics. In order to conduct parametric design process, voltage equation was used to schematize Lmin/K and L/M map, and the schematized map was used to determine Lmin, K or L, M. In order to meet requirements such as thrust force and input voltage and to satisfy the target values of Lmin, K or L, M, the types and sizes of each type were designed using geometry design process. 2-FEA was conducted for each of the designed model. After examining thrust force based on the location of the mover, Type-1 showed radical change in thrust force as movers moved, and Type-2 and Type-3 showed constant appearance of thrust force. The total volume of the designed LOA model was compared to select the model with highest thrust force density. Also, the weight of the mover for each model was compared in order to select the model that was predicted to have highest mechanical responsiveness and stroke characteristics.

액체 크로마토그래피에서 Poly-NTOE(1, 12-diaza-3, 4:9, 10-dibenzo-5, 8-dioxacyclopentadeca-1, 12-ylene-2, 7-dihydroxyoctamethylene)를 이용한 Hg(II)의 분리

김해중,신영국,김시중,Kim, Hae-Joong,Shin, Young-Kook,Kim, Si-Joong 한국분석과학회 1995 분석과학 Vol.8 No.3

수용액서 poly-NTOE(1, 12-diaza-3, 4:9, 10-dibenzo-5, 8-dioxacyclopentadeca-1, 12-ylene-2, 7-dihydroxyoctamethylene)를 흡착시킨 실리카겔을 고정상으로 하는 액체 크로마토그래피를 이용하여 혼합 금속이온용액으로부터 전이금속 및 후전이금속이온들의 분리효율을 결정하였다. pcly-NTOE와 금속이온들간의 결합상수 및 분리인자들의 순위는 전이금속이온의 경우 Co(II)<Ni(II)<Cu(II)>Zn(II)였으며, 후전이금속이온들의 경우 Cd(II)<Pb(II)<Hg(II)로 나타났다. 이러한 순위는 전이금속이온의 경우 Irving-Williams 순위와 일치하였으며, 후전이금속이온의 경우 엔트로피 기여로서 설명이 가능하였다. 또한 분리실험결과 전이금속 및 후전이금속이온이 혼합된 용액에서 Hg(II)의 분리효율이 다른 이온들에 비해 좋게 나타남을 확인하였다. The separation efficiency of metal ions by using the poly-NTOE(1, 12-diaza-3, 4:9, 10-dibenzo-5, 8-dioxacyclopentadeca-1, 12-ylene-2, 7-dihydroxyoctamethylene) has been determined by column chromatography in aqueous solution. Binding constants and separation factors for several poly-NTOE interactions were measured in aqueous solution. The order of these binding constants and separation factors with metal ions were Co(II)<Ni(II)<Cu(II)>Zn(II) for the transition metal ions and Cd(II)<Pb(II)<Hg(II) for the post transition metal ions. These results were explained in terms of the Irving-Williams series and entropy of desolvation. This experimental results showed good efficiency for separation of Hg(II) from mixtures of transition metal ions and post transition metal ions in aqueous solution.

에스컬레이터의 부하하중을 고려한 소비에너지 측정에 관한 연구

김해중(Hae-Joong Kim),김형근(Hyung-Kun Kim),김윤환(Youn-Hwan Kim),김승주(Seung-Ju Kim),전희득(Hee-Deuk Jun),문재원(Jae-Won Moon) 대한전기학회 2019 대한전기학회 학술대회 논문집 Vol.2019 No.7

준비운동 정도에 따른 골프 운동상해율과의 상관성 연구

김해중(Kim, Hae-Joong),김상우(Kim, Sang-Woo) 한국체육과학회 2015 한국체육과학회지 Vol.24 No.4

A present study carried out a survey with 250 male and female amateur golfers (having more than 2 years of golf experience) and majors in golf, who reside in Seoul, to examining the correlation between the degree of warm-up and golf sports injuries. The results are as follows. Looking into the responses of the time spent on warming up before playing golf, it is known that most of the male golfers (N=89, 71.2%) spare 5 minutes or less for warming up and more than half of the female golfers (N=74, 59.2%) also spend 5 minutes or less on pre-exercise. The results of injury frequency depending on the degree of warm-up showed that the less both males and females spend on warming up, the more frequently they get injured. On the contrary, they get injured less frequently as they warm up longer. By injured part, the males golfers hurt the ribs most and it is followed by wrist, elbow and waist (answered by the same number), shoulder, finger and knee while the female golfers hurt waist most and it is followed by wrist and ribs at a similar rate, elbow, shoulder and finger. Judging from the findings above, it was found that a number of golfers experience injury but are negligent of pre-exercise to prevent injuries. Most of the respondents in the survey answered that they spend little time warming up or never do so. To improve competition power in golf, golfers need to realize that it is necessary to minimize injury as well as take a long-term approach to the sport.

골프 지도자의 서번트 리더십이 리더 신뢰와 동호인 만족에 미치는 영향

김해중(Kim, Hae-Joong),범철호(Bum, Chul-Ho) 한국체육과학회 2015 한국체육과학회지 Vol.24 No.4

This study assessed the impact of coaches’ servant leadership qualities on golf participants’ trust in their coaches and their satisfaction levels. The data from 285 questionnaires were analyzed for the present study. Using a SPSS 18.0 version, first, it was found that coaches’ commitment to the growth of people, and devotion and service behavior affected their golf participants’ levels of leader trust in their coaches. Second, vision suggestion, commitment to the growth of people, and devotion and service were found to be positively related to the golf participants’ satisfaction levels. Third, a high level of leader trust had a significantly positive impact on golf participants’ satisfaction levels.

가동코일형 리니어 엑추에이터의 설계 및 해석

김해중(Hae-Joong Kim),손도(Tao Sun),권선오(Soon-O Kwon),김용호(Yong-Ho Kim),홍정표(Jung-Pyo Hong) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.7

본 논문에서는 압축기용 리니어엑추에이터 중 가동코일형 리니어 엑추에이터의 설계 및 해석에 관한 연구를 다룬다. 가동코일형 중에서 가동자에 철심을 포함하지 않고, 코일만을 포함하여 이동자의 무게를 줄일 수 있는 공심형 모델에 대해 설계 및 해석을 수행하였다. 본 논문에서 다루는 모델은 두 개의치를 갖는 철심 개방형 모델이다. 전압방정식을 이용하여 Parameter를 산정하고, 기계적 특성을 고려하기 위해 운동방정식이 결합된 엑추에이터의 동특성 해석을 실시하였다.

골프 운동이 건강관련 체력요인에 미치는 영향

김해중(Kim, Hae-Joong),신승남(Shin, Shung-Nam),김상우(Kim, Sang-Woo) 한국체육과학회 2013 한국체육과학회지 Vol.22 No.2

This study aimed to identify the differences of the health-related fitness factors of the general university students and the university students majoring in golf for more than two years. The subject students of the study consist of the general university students group of the ages of 20-30 (30 men, 30 women) and the university students majoring in golf group (30 men, 30 women). As for the measurement factors, they are composed based on the health-related fitness factors (body fat, cardiopulmonary endurance, muscle strength, flexibility, muscle endurance). As a result of the study, the following results were obtained. 1. As for muscle strength, cardiorespiratory endurance and amount of body fat, which represents body composition, they did not show a significant difference for both men and women among the two groups. 2. As for flexibility and muscle endurance among the health-related fitness factors, they showed a significant statistic difference for both men and women. It became apparent that the university students majoring in golf had a significantly higher flexibility and muscle endurance than the general university students. Thus, it was determined that a long-term golf exercise had a positive impact in some factors among the health-related fitness factors since the university students majoring in gold for more than two years were found to have a significantly higher flexibility and muscle endurance among the health-related fitness factors. However, it is believed that long term and systematic exercise programs or the accompanying measures, which can improve the remaining factors, are required since the study did not obtain the meaningful results from all of the health-related fitness factors. Studies of effects of golf exercise and positive effect on the health of the golfers should be continuously performed in the future.

PDA와 $NtnOenH_4$를 이용한 Ag(Ⅰ)-이온선택성전극의 제조와 특성

김해중,이동근,장정호,정용석,신영국,Kim, Hae Joong,Lee, Dong Geun,Chang, Jeong Ho,Chung, Yong Seog,Shin, Young-Kook 대한화학회 1997 대한화학회지 Vol.41 No.10

운반체로 $NtnOenH_4$와 $NdienOenH_4$를 포함한 액체막을 통한 전이금속 양이온의 운반속도

김해중,장정호,신영국,Kim, Hae Joong,Chang, Jeong Ho,Shin, Young Kook 대한화학회 1997 대한화학회지 Vol.41 No.2

거대고리 리간드인 1,12-diaza-3,4;9,10-dibenzo-5,8-dioxacyclopentadecane$(NtnOenH_4)$와 1,12,15-triaza-3,4;9,10-dibenzo-5,8-dioxacyclo-heptadecane$(NdienOenH_4)$를 운반체로 포함한 클로로포름 액체막을 통한 운반속도는 Ni(II)<Co(II)<Cu(II)<Zn(II)순으로 각각 증가하였다. 전이금속 양이온의 운반속도는 알칼리금속 양이온들의 운반속도와는 달리 농도 증가에 따른 운반속도가 1차적인 관계를 나타내었으며, 이로부터 운반과정에서의 해리과정이 속도 결정단계임을 알 수 있었다. 또한 온도변화에 따른 운반속도의 측정으로부터 전이금속 양이온들의 분배수화자유에너지$({\Delta}Gp)$값을 구하여 본 결과, 운반속도의 순위는 전이금속 양이온들이 갖는 분배수화 자유에너지의 음의 값의 크기에 비례함을 알 수 있었다. The transport rates of transition metal cations were increased in order of Ni(II)<Co(Ⅱ) <Cu(II)<Zn(II)through a bulk liquid membrane containing 1,12-diaza-3,4;9,10-dibenzo-5,8-dioxacyclooctadecane$(NtnOenH_4)$and 1,12,15-triaza-3,4;9,10-dibenzo-5,8-dioxacyclo-heptadecane$(NdienOenH_4)$as carriers. The transport rates of transition metal cations was found to be of first order to the salt concentrations. It was also found that the dissociation process in the transport process is rate determining step. From the measurements of the transport rates at various temperatures, the partition free energies of hydration$({\Delta}G_p)$for the transition metal cations were calculated. The results showed that the order of transport rates of transition metal cations was found to be proportional to the magnitudes of negative value of the partition free energies of hydration$({\Delta}G_p)$.