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마이크로 컴퓨터를 이용(利用)한 엔진회전속도(回轉速度) 제어(制御)에 관한 연구(硏究)
민영봉,이기명,Min, Y.B.,Lee, K.M. 한국농업기계학회 1986 바이오시스템공학 Vol.11 No.1
Speed control of kerosene engine by the combination of a manual throttle and centrifugal weight type governor is not adequate for evaluating energy requirements in laboratory and field performance tests. This paper describes an engine speed control system. This system consists of Apple-II microcomputer, step motor set to the throttle shaft directly, step motor driving and interfacing circuit, engine performance data acquisition system for measuring load, speed and time and potentiometer as speed adjustor. The performance of this system was successful in maintaining engine speed within ${\pm}37$ rpm of reference speed indicated by computer and potentiometer.
121김치생산용 알타리무 전처리가공시스템개발(4) - 시작기의 자동화 평가 -
민영봉,김성태,문성원,강동현,정태상 한국농업기계학회 2006 바이오시스템공학 Vol.31 No.2
An Altari radish pre-processing system, which feasible to process automatically such operations as leaf and root tail cutting and root peeling, for kimchi production was accomplished based on the foregone serial studies. In this study, the performances of the developed prototype machine, considered as a commercializing level, were analyzed and evaluated. The prototype machine attached Tiny PLC automatic control system was performed the sequent function as the rate of successful peeling was more than 98% for the Altari radish less than 70 mm diameter of a radish. The operating efficiency of this was 9 sec/each, 128 ㎏/h, and it means as much as 5~6 times that of a woman labor's. The sanitation and taste of the mechanized-processed Altari radish kimchi was almost same as that of the handmade. And they were suitable for manufactory of kimchi as the both short term ripening and storing kimchi.Developed machinery with one peeling device and two peeling devices that compared with hand processing, it was analyzed that the break-even yearly working days were 28 days and 19 days, and the break-even yearly processing amount were 28,700 ㎏, 32,400 ㎏, respectively.
김치생산용 알타리무 전처리가공시스템 개발 (IV) - 시작기의 자동화와 평가 -
민영봉,김성태,정태상,강동현,문성원,Min Y.B.,Kim S.T.,Chung T.S.,Kang D.H.,Moon S.W. 한국농업기계학회 2006 바이오시스템공학 Vol.31 No.2
An Altari radish pre-processing system, which feasible to process automatically such operations as leaf and root tail cutting and root peeling, for kimchi production was accomplished based on the foregone serial studies. In this study, the performances of the developed prototype machine, considered as a commercializing level, were analyzed and evaluated. The prototype machine attached Tiny PLC automatic control system was performed the sequent function as the rate of successful peeling was more than 98% for the Altari radish less than 70 mm diameter of a radish. The operating efficiency of this was 9 see/each, 128 kg/h, and it means as much as $5{\sim}6$ times that of a woman labor's. The sanitation and taste of the mechanized-processed Altari radish kimchi was almost same as that of the handmade. And they were suitable for manufactory of kimchi as the both short term ripening and storing kimchi. Developed machinery with one peeling device and two peeling devices that compared with hand processing, it was analyzed that the break-even yearly working days were 28 days and 19 days, and the break-even yearly processing amount were 28,700 kg, 32,400 kg, respectively.