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1、抓斗起重機(jī)運(yùn)用先進(jìn)的可編程控制技術(shù)-自動(dòng)化畢 2013-05-16 01:28 導(dǎo)讀:自動(dòng)化論文畢業(yè)論文,抓斗起重機(jī)運(yùn)用先進(jìn)的可編程控制技術(shù)-自動(dòng)化畢在線閱讀,教你怎么寫(xiě),格式什么樣,提供各種參考范例: Abstract The paper mainly
2、60;researches the application of advanced PLC (Programmable Logic Controller), transducer, and absolute encoder in the grab bucket crane, which takes the place of the traditional
3、160;mode of the electric control and aims to improve the work efficiency of grab bucket crane and decrease its failure rate. These applications will bring a lot of
4、160;advantages, such as lower maintenance costs, lower workload of maintenance, and easily to be manipulated etc. It is also achieved to be semi-automatic operation to reduce&
5、#160;the risk of man-made operation accident with the effects of reliable running and energy-saving. The paper primarily focuses on the principle of automatic open / clo
6、se grab of grab bucket crane and proposes the principle and physical significance of the moving coordinate method. It is practical that the applied absolute encoder autom
7、atically follows the lifting and landing of grab bucket and measures the length difference value of steel wire rope to achieve the function of its automatic opening
8、or closing and stable grabbing. According to the usual failures during the practical application of grab bucket crane, the failure display is also developed to be applied
9、 to the crane. The paper consists of four parts: The first part (Chapter one: Introduction) mainly describes the working principle of grab bucket crane, focusing on
10、 the problems of crane controlled in the traditional method, and further exploring the feasibility for intelligent implementation of grab bucket crane. The second part (
11、Chapter 2, 3, 4) describes the configuration and functional principles of PLC, transducer and encoder. It also makes a theoretical analysis for the selection of PLC, tran
12、sducer and encoder, which lays a theoretical foundation for the realization of the intelligent operation of grab bucket crane in the following chapter. The third p
13、art (Chapter 5) researches the specific schemes for intelligent implementation of grab bucket crane, such as heavy trolley, light trolley, controller configuration, PLC, transducer,
14、0;electric connection of absolute encoder, working principle etc. It explicitly explained the principle of automatic open/ close grabbing of crane and the implementation of stable&
15、#160;grabbing. It also introduces the realization principle to substitute the limit position of ascending with the utility of encoder. The fourth part (Chapter 6)
16、;mainly introduces soft structure of intelligent operation and PLC configuration of gab bucket crane. The software program of heavy trolley, light trolley, and switching &
17、;hoisting mechanism is also composed in the paper. In the end, it is summarized for the whole research and makes an outlook for the future research.
18、60;Key words: crane, PLC, transducer, absolute encoder, automatic opening /closing grab failure display. 摘要 本主要研究抓斗起重機(jī)運(yùn)用先進(jìn)的可編程控制技術(shù)、變頻器和絕對(duì)值編碼器,取代傳統(tǒng)的電氣控制方式,提高抓斗起重機(jī)的工作效率,減小抓斗起重機(jī)的故障率,降低維修費(fèi)用,使維修工作量大大減少,操作變得簡(jiǎn)單,可以實(shí)現(xiàn)半自動(dòng)化操作,減少人為的操作事故,運(yùn)行可靠,具有節(jié)能效果。 本論文著重研
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