bow construction 中文意思是什麼
bow construction
解釋
船首部結構- bow : n 1 弓；石弩；弓形物〈飾〉；弓形彎曲；弧。2 【音樂】琴弓；【機械工程】鋸弓。3 虹。4 蝴蝶結，蝴蝶...
- construction : n 1 建築，結構，構造，架設，鋪設；建設；設計；工程；建築法，構造法，建築物；【戲劇】搭置，布景，...
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This vessel is a steel shallow draft flushing dredger of all - welded construction, with single deck, single bottom, transverse framing, transom stern and continuous superstructure, and sledge - shape bow. it is operating on the huanghe river for flushing and suctioning silt and sand with the purpose of controlling the huanghe river tongguan section, dredging the waterway and reducing the flooding. main engine : nt855 - m270
本船為鋼質全焊接結構淺吃水內河自航沖砂清淤工作船，具單甲板其中艉舵機艙首甲板為升高甲板，單底，橫骨架式結構，方艉及連續上層建築首部採用雪橇式線型。 -
Firstly, the current testing localization in the detection of electric bow is analyzed and the new system ' s whole construction developed in this thesis is introduced ; in the 2rd chapter, the embedded 110v dc power supply is analyzed and constructed, and with experiments, some dissonant results such as the fluctuation of output pwm ( pulse width modulation ) pulses, the power noise added to output voltage, and the drop of output voltage have been analyzed and the problems have been broken down one by one ; in chapter 3, stepping motor ' s drive has been systematically dissertated, and combing stepping motor ' s subdivided drive technology, the author develops an intelligent mini - step driving circuit using a main - sub microprocessor structure, which is validated in the hybrid stepper based system ; in the 4th chapter, liquid crystal driving and displaying technology is specified in detail, with one sort of lcd modules ( tlm12864h ), the author develops an feasible circuit for the new testing system, designs a menu mode based program struc ture and brings here some programming codes using franklin c51 programming language ; in chapter 5, the above built system is used in the electric bow ' s practical detection, and the differentiating rate of this system is analyzed
論文首先分析了目前機車受電弓檢修方式存在的局限並概述了本論文研製的受電弓測試系統的體系架構；第二章對系統內置110v直流控制電源進行了分析和設計，結合試驗對輸出pwm振蕩、輸出電源噪聲大、輸出電壓下跌等現象進行了分析並提出解決措施；第三章論述了步進電機的驅動，結合步進電機微步驅動技術研製了基於上下位單片機組的混合式步進電機智能驅動電路，並在試驗中得以驗證；第四章詳述了液晶驅動及顯示技術，利用一款液晶顯示模塊tlm12864h研製出本系統用液晶顯示電路，設計了菜單式的程序結構並以franklinc51編程方式給出部分子程序代碼；第五章則將以上構建的整個系統應用在機車受電弓的實測中，並對測試解析度進行了分析。
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