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지능형 단말기를 사용한 탱크로리 운행 안전 모니터링 시스템 개발
배기만(Kiman Bae),박근영(Geun-Young Park),이동진(Dong-Jin Lee),임정식(Jeong-Sik Lim),이상룡(Sang-Ryong Lee),이춘영(Choon-Young Lee) 한국가스학회 2008 한국가스학회지 Vol.12 No.2
독성가스나 가연성 폭발 위험이 있는 원료를 운반하는 탱크로리 및 벌크로리는 출발지에서부터 목적지 및 중간 경로를 따라 지속적으로 차량 및 탱크의 다양한 상태를 모니터링하는 것이 안전을 위해 필요하다. 따라서, 본 논문은 탱크로리 운행에 관한 안전 모니터링 시스템에 관하여 제안하고, 운전상태 및 탱크 또는 차량의 상태를 모니터링하기 위한 센서시스템과 차량 내 컴퓨터와 중앙 관제 시스템의 연계에 관하여 고찰한다. It is important for national safety that tank lorry or bulk lorry which is carrying toxic gas or explosive materials should be monitored during the maneuvering from starting point to destination as well as vehicle or tank status. Therefore, we propose a safety monitoring system for tank lorry to check driving condition and the vehicle status. We studied the integration of central control system with in-vehicle computer system connected with various sensors for monitoring through a communication network.
이헌형(Heonhyeong Lee),김기만(Kiman Kim),이상호(Sangho Lee),김세주(Sejoo Kim),이근호(Geunho Lee) 한국자동차공학회 2012 한국자동차공학회 부문종합 학술대회 Vol.2012 No.5
The studies about motor using reluctance torque was not active. However, in recent years, as increasing the price of permanent magnet, the studies that using the big reluctance torque are becoming more active than before. SRM torque is generated when its inductance is changed. So, In order to generate continuous torque in SRM, it is necessary to figure out the exact level of the inductance determined by rotor’s position. And the current must be applied in the correct position. If something goes wrong with the current size in coil or position that current are applied, there will be generated unwanted torque ripple. This will cause vibration and noise in motor. In this paper, the optimal current waveform to reduce torque ripple is found. And it is configured in a table. It can make FSRM(developed in studies of SRM) creates a constant torque output. A method to reduce FSRM’s torque ripple by using the independent current reference depending on the rotor’s position and applying TDF(Torque Distribution Function) has been studied.
Kyung-Jun Boo(Kyung-Jun Boo),Kiman Lee(Kiman Lee),Il-Ho Park(Il-Ho Park),Tae Jin Kang(Tae Jin Kang) 대한약학회 2023 약학회지 Vol.67 No.1
Cynara scolymus L. (artichoke) has been traditionally used in the treatment of digestive-related disease, severe hyperlipidemia and liver disease. Recently, anti-inflammatory effect of artichoke has been reported by several studies, but its mechanisms are still unclear. In this study, the anti-inflammatory mechanism of artichoke was studied using an in vitro acute inflammation model. The effect of artichoke on the expression of pro-inflammatory cytokines, such as interleukin- 1beta (IL-1β), IL-6, and tumor necrosis factor-alpha (TNF-α) in murine macrophage cell line, RAW264.7, was examined by using ELISA and RT-PCR. As a result, artichoke inhibited the expression of IL-1β, IL-6 and TNF-α in macrophages activated by lipopolysaccharide (LPS) at a dose dependent manner. The expression of inflammatory mediators such as NO and PGE2 was next investigated in RAW264.7 cells stimulated with LPS. Artichoke also inhibited the production of NO and PGE2 in the cells at a dose dependent manner. Artichoke suppressed the mRNA expression of iNOS and COX-2 in macrophages by LPS. The effect of artichoke on the activation of NF-κB was examined and LPS-induced NF-κB activation was decreased by treatment of artichoke, suggesting that artichoke has anti-inflammatory effect by inhibiting NF- κB activation.
6kW급 권선형 동기 전동기를 이용한 e-Assist 시스템 개발
김기만(Kiman Kim),송춘섭(Chunsub Song),이호기(Hoki Yi),홍정표(Jungpyo Hong),이근호(Geunho Lee) 한국자동차공학회 2013 한국자동차공학회 부문종합 학술대회 Vol.2013 No.5
Recently, Permanent Magnet Synchronous Motor(PMSM) are mainly used to the ISG system for high power density. Due to the cost of rare earth increasing, ensuring cost competitiveness has been to a critical issue in spite of PMSM have high power density advantage. Other types motor such as inductance motor doesn’t use rare earth, whereas have the low power density. In this paper, a developed e-Assist system that used to Wound Rotor Synchronous Motor (WRSM) is propesed to complement these drawbacks. High performance can be achieved without using the rare earth.