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주진원, 신규하 충북대학교 산업과학기술연구소 2013 산업과학기술연구 논문집 Vol.27 No.2
In this paper, a model of the intelligent crane system which is monitoring the weight and location of the load is developed to help prevent the overthrow or failure of cranes. The system consists of mechanical structure including booms, electrical motion cylinders and a threecomponent loadcell. Finite element deformation analysis was performed to design the loadcell and to predict output strains from the Wheatstone bridge circuit composed of four strain gages. The actively compensation method was used to minimized the coupling errors from the calibration results of the three-component loadcell. As a result, the coupling strains are completely eliminated. The operating test results show that informations obtained from the computer program is in good agreement with actual data
Thioamide와 Benzothiazole 유도체의 합성
정대일,신규하,김인식,김윤영,정두희,이용균 東亞大學校 1998 東亞論叢 Vol.35 No.-
The thioamides; {N-(6-methyl-2-pyridinecarbothionyl)-3-methoxyaminobenzene (27), N-(6-methyl-2-pyridinecarbothionyl)-4-methoxyaminobenzene (29), N-(6-methyl-2-pyridine-carbothionyl)-3-ethoxyaminobenzene (31), N-(6-methyl-2-pyridinecarbothionyl)-4-ethoxyamion-benzene (33), N-(6-methyl-2-pyridinecarbothionyl)-3-bromoaminobenzene (35), N-(6-methyl-2-pyridinecarbothionyl)4-bromoaminobenzene (37), N-(6-methyl-2-pyridinecarbothionyl)-3-chloroaminobenzene (39), N-(6-methyl-2-pyridinecarbothionyl)-4-chloroaminobenzene (41)} were synthesized by the treatment of 2,6-lutidine(22) with sulfur in aniline derivatives (23). The benzothiazole derivatives; {5-methoxy-2-(6-methylpyridy)benzothiazole (46) and 6-ethoxy-2-(6-methylpyridyl)benzothiazole (47)} were respecively synthesized by the treatment of synthesized thioamides; N-(6-methyl-2-pyridinecarbothionyl)-3-methoxy-aminobenzene (27) and N-(6-methyl-2-pyridinecarbothionyl)-4-ethoxyaminobenzene (33) with zirconium (Ⅳ) oxide catalyst in sodium carbonate solution.