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정명진,이명구 국제문화기술진흥원 2018 The Journal of the Convergence on Culture Technolo Vol.4 No.4
Demand for functional and convenience foods in economic growth of emerging countries and developed countires is increasing. As a result, the frequency of use of food processing machines is continuously increasing, and disaster related to food processing machines is also increasing. Therefore, this study analyzes the characteristics of disaster related to food processing machinery and proposes preventive measures. 신흥국들의 경제성장과 선진국들의 기능성, 편의성 식품에 대한 수요증가에 따라 다양한 식품에 대한 수요가증가하고 있으며, 이에 따라 국내에서도 식품가공기계산업에 대한 관심 및 식품가공기계의 사용빈도가 지속적으로 증가하고 있다. 따라서 식품가공기계와 관련하여 발생하는 재해도 역시 증가하고 있으며, 전체 산업 재해율보다 높은재해율을 보이고 있다. 이에 본 연구에서는 식품가공기계 관련 재해특성을 분석하고 그 예방대책을 제시하고자 한다.
디젤자동차의 低公害, 高出力用 超音波 燃料供給裝置의 商用化 開發
정명진,조규상,이규용,류정인 한국자동차공업협회 1995 한국 자동차공학회논문집 Vol.3 No.2
This is an experimental study on the chassis dynamometer and high way road testing during a severe winter and summer season. Results obtained to compare with the ultrasonic fuel feeding system and conventionaJ fuel system in diesel automobile engine. The results were as followers in case of the ultrasonic fuel feeding system. 1. In chassis dynamometer testing during given vehicle speeds, output were increased from 4.6 to 11.43%, brake specific fuel consumption were increased from 6 to 19%, smoke were decreased from 16.7 to 50%. 2. The running fuel consumption ratio in high way road test were decreased by 15.3% at a severe summer and 20.2% at a severe winter.
수학적 모델링에 기초한 역진자형 모바일 로봇의 자세제어
정명진,박형배,최길환 제어로봇시스템학회 2012 제어로봇시스템학회 각 지부별 자료집 Vol.2012 No.12
Recently, platform of mobile robot has been proposed actively by the many manufacturing companies. In the mobile robot area, research for inverted pendulum type mobile robot having two wheels as movement method is conducted actively by merits such as low power consumption, light weigh, simple configuration, excellent expandability, and wide application area. Because of inverted pendulum type mobile robot has characteristics as instability in system configuration, high technology such as precision attitude sensing and control algorithm is required for continuous attitude balance. In this work, attitude control method using mathematical model and design method using mechatronics model are proposed for inverted pendulum type mobile robot In mathematical model, dynamics and nonlinear component such as dead zone and saturation of control input are considered. In mechatronics model, uncertainty of model is minimized by adoption of simple structure and parameter presumption of motor system. the developed design and control method is verified by experiment using inverted pendulum type mobile robot.
Power up! cheer up! - 속이 타는 듯한 느낌! 혹시 위궤양?
정명진,Jeong, Myeong-Jin 한국건강관리협회 2015 건강소식 Vol.39 No.9
우리나라는 다른 나라에 비해 위장질환의 유병률은 높은 편이지만 위궤양의 주요원인으로 꼽히는 헬리코박터 감염률이 지속적으로 감소하면서 위궤양 유병률은 줄어들고 있는 추세다. 하지만 안심할 단계는 아니다. 과음, 과식, 흡연 등의 잘못된 생활습관이 여전한 이상, 위궤양의 위험 또한 여전할 수밖에 없기 때문이다.