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1、barriers. (2) bench temporary protective railings on each side. (3) the top of the stairs, railings or temporary guardrails installed with the construction. (4) the bar should brush color. 4, balcony side: use formal balcony fence-slab, floor installation or the installation of a temporary fence. sp
2、acing greater than 2 m to set up columns (ibid.). 5, frame structures: (1) when scaffold is not less than operations, equipped with operatingsociety; after after 60 years of development, the socialist society more full of life and vigor. the remarkable sign is in china adhere to the basic principles
3、 of scientific socialism, not lost ancestors, always adhere to dialectical materialism and historical materialism as the theoretical foundation, adhere to the to the realization of communism as the supreme ideal, adhere to the party of the working class as the core of leadership, insist to liberate
4、and develop productivity is the fundamental task, adhere to represent the most numerous peoples fundamental interests, adhere to public ownership and according to work, distribution is the basis of the socialist economic system, adhere to the position of the people as masters of the country is the e
5、ssential characteristic of the socialist democratic politics, adhere to reform and improve the socialist system and institutional mechanisms, and so on. at the same time, our country socialist and with distinct chinese characteristics, the road of socialism with chinese characteristics, the system o
6、f theories of socialism with chinese characteristics and the socialist system with chinese characteristics, are deeply rooted in the creative practice of hundreds of millions of peoples indomitable, timely response to practice innovation theory calls, rich heritage of both historical and cultural tr
7、aditions of the chinese nation, and let the chinese people love to see and hear the chinese style and chinese style, comply with the requirements of the development of the times, reflect the common aspiration of the people, with distinct characteristics of the practice, theoretical characteristics,
8、national characteristics, characteristics of the times. therefore, it can always maintain the vigor and vitality, and always guide contemporary china along the right direction stride forward. so we must always hold high the great banner of socialism with chinese characteristics unswervingly. on the
9、other hand, chinas socialist society is still in primary stage, which is chinas construction of socialist modernization insurmountable historical stage, the need for hundreds of years time. chinas socialist system was born in semi colonial and semi feudal society, productivity level is far behind in
10、 the developed capitalist countries, which determines the our country must experience a long primary stage, to realize in other countries under the conditions of capitalism to achieve industrialization and production in the market, socialization and modernization. today, our country socialism has ma
11、de remarkable tremendous to accelerate the pace of achievements, but our country fundamental realities of the country is still has a large population, weak thin, development is not balanced. chinas economy has leapt to the world, but the per capita gross domestic product is still ranked in the world
12、 the 90%; economic sustained and rapid development, but the development is not balanced, coordinated, can not be continued problems are still prominent, the transformation of economic developmentmanipulator is now used as a industrial robots in use, the control objectives often appear often in indus
13、trial automation. industrial automation technology has gradually matured, as mature a technology line has been rapid development in industrial automation as a separate subject. manipulator application began to filter into welding, logistics, mechanical processing, and other industries. especially at
14、 high or very low temperatures, full of poisonous gases, high radiation case, robot in similar circumstances showed great use also brings great convenience to the staff. precisely because of this robot to get peoples attention began to be a high degree of development. labor rates, working conditions
15、, labor intensive aspects of promoting development. both at home and abroad to develop the plc (programmable logic controller) is in various special circumstances and under special conditions set for mechanical devices. now turned on the development of the microelectronics automatic control technolo
16、gy and the rapid development of the trains, the success of plc hardware software and simulation control win big and successful development, now continues to develop as a factory automation standards. because robots are good development of the technology makes a good optimization of productive capita
17、l, and robot shows this unique advantages, such as: has good compatibility, wide availability, hardware is complete, and programming that can be mastered in a short time, so in the context of industrial plc applications became ubiquitous. manipulator in many developed country agriculture and industr
18、y has been applied, such as the use of mechanical harvesting large areas of farmland, repeated operations on the high-speed line that uses a robotic arm, and so on. today, the high level of automation combined with restrictions on the manipulator development level is slightly lower than the internat
19、ional. the design is mainly arm welding machine by plc automation control. this of design let designers on in school by learn of has a must of consolidation, understand has some usually didnt opportunities awareness in world range within some leading level of knowledge has has must awareness, hope d
20、esigners can in yihou of design in the can success of using in this design in the proceeds of experience 1.2 manipulator in both at home and abroad of research profile automation mechanical arm research began yu 20th century medium-term, after years with with computer and automation technology of de
21、velopment, makes mechanical arm on the grand stage of industrial automation and shine, gradually became an industrial evaluation standards, and its importance can be seen. now original robotic arm spent most of mass production and use on the production line, which is programmed robotic arm. as the f
22、irst generation of manipulator position control systems main features, although not back several generations that can detect the external environment, but can still successfully complete like welding, painting, delivery as well as for materials simple movements. second generation mechanical arms are
23、 equipped with sensors and manipulators have the environment there is a certain amount of sense, when the mechanical arm is to use the program as a basis. difference is that the robot begand如何解決步進(jìn)電機(jī)及其驅(qū)動(dòng)器干擾問題如何解決步進(jìn)電機(jī)及其驅(qū)動(dòng)器干擾問題某三相混合式步進(jìn)電機(jī)vrdm3913及其配套步進(jìn)驅(qū)動(dòng)器wd3-007除具有一般步進(jìn)電機(jī)的特點(diǎn)外,其獨(dú)到之處是:該三相混合式步進(jìn)電機(jī)采用交流伺服原理工作,
24、轉(zhuǎn)子和定子的直徑比高達(dá)50%,高速時(shí)工作扭矩大,低速時(shí)運(yùn)行極其平穩(wěn),幾乎無共振區(qū)。其配套驅(qū)動(dòng)器具有單相220v/50hz輸入,三相正弦輸出,輸出電流可設(shè)置,具有十細(xì)分和半流額定值60%功能;控制方式靈活,有脈沖+方向控制,也有正轉(zhuǎn)脈沖+反轉(zhuǎn)脈沖控制方式;有過熱保護(hù)功能,因此使用起來十分的方便。由于步進(jìn)驅(qū)動(dòng)器輸出電流3a,電壓325v,再加上其外殼未采用鋁、鈦、鎂合金外殼進(jìn)行磁屏蔽,因此對高靈敏的接收機(jī)系統(tǒng)造成干擾,使其無法工作,并且污染電源,造成控制系統(tǒng)的單片機(jī)和上位機(jī)無法進(jìn)行通訊,嚴(yán)重者造成單片機(jī)死機(jī),給正常使用造成了困難,因此干擾問題必須加以解決。所做系統(tǒng)中采取了如下措施:a.加裝電源濾波
25、器,減少對交流電源的污染。b.一點(diǎn)接地原則。將電源濾波器的地、驅(qū)動(dòng)器pe(地)(驅(qū)動(dòng)器與機(jī)箱底板絕緣)、控制脈沖pulse-和方向脈沖dir-短接后的引出線、電機(jī)接地線、驅(qū)動(dòng)器與電機(jī)之間電纜防護(hù)套、驅(qū)動(dòng)器屏蔽線均接到機(jī)箱壁上的接地柱上,并要求接觸良好。c.盡量加大控制線與電源線(l、n)、電機(jī)驅(qū)動(dòng)線(u、v、w)之間的距離,避免交叉.比如我們在處理雙軸驅(qū)動(dòng)系統(tǒng)中兩個(gè)處在同一機(jī)箱的驅(qū)動(dòng)器安裝位置時(shí),一個(gè)驅(qū)動(dòng)器銘牌朝前,另一個(gè)則朝后,并在結(jié)構(gòu)布置上使這些引線盡量短。d.使用屏蔽線減輕外界對自己的干擾,或自己(電源線)對外界的干擾。2fk0f2c4d yzs振動(dòng)電機(jī) barriers. (2) be
26、nch temporary protective railings on each side. (3) the top of the stairs, railings or temporary guardrails installed with the construction. (4) the bar should brush color. 4, balcony side: use formal balcony fence-slab, floor installation or the installation of a temporary fence. spacing greater th
27、an 2 m to set up columns (ibid.). 5, frame structures: (1) when scaffold is not less than operations, equipped with operatingmode and deepen the reform task of industrialization, urbanization and agricultural modernization, but the industry is big and not strong, agricultural base is still weak, rur
28、al development is relatively lagging behind, farmers income difficult problem is still a lot of; ideological and moral construction has made important progress, but some areas of moral anomie, integrity deletion the national peoples life has reached a comparatively well-off level, but the gap betwee
29、n urban and rural areas and residents income distribution is stillalthough large, education, employment, social security and other vital interests of the masses is also more, part of the life of the masses remains difficult; the creative vitality of society generally increased, but the impact social
30、 harmony and stability of the various contradictions also many; and so on. these shows, our country is still in and will remain so for a long time the basic national conditions of the primary stage of socialism has not changed, the peoples growing material and cultural needs with the contradiction b
31、etween the backward social production, the social principal contradiction does not change, our countrys international status as the largest developing country in the world has not changed. i have to the problem, make decisions, do things, to promote reform and development of the any aspect of any fi
32、eld, should be firmly based on the primary stage of socialism, the largest practical, do is not beyond the stage, and is not backward reality, both best effort, and our capabilities. the main content is what? , a total of eight, 281 words, including lead, the party honest self-discipline norms and t
33、he leadership of the party members and cadres self-discipline norms 3 parts, the main contents can be summarized as four must eight code. lead part, reiterated on ideal and faith, the fundamental purpose, the fine traditions and work style, noble sentiments, such as four must principle, emphasized s
34、elf-discipline, accept higher request for self-discipline supervision subject. finally, the foothold in maintaining the partys advanced nature and purity, to reflect the revised guidelines. party members standard part around the party members how to correctly treat and deal with the public and priva
35、te, cheap and rot thrifty and extravagance and bitter and music the relationship between the four norms. party leader cadre clean fingered self-discipline norms for the leadership of the party members and cadres of the vital few, around the clean politics, from civil servant character, the exercise
36、of power, moral integrity, a good family tradition and other aspects of the leadership of the party members and cadres four norms. the party member of self-discipline norms and party members guide cadre is clean fingered self-discipline norms, a total of eight, collectively referred to as the eight
37、code . four must eight codemanipulator control mode and programmable controllers introduction 2.1 select discussion with manipulator control 2.1.1 classification of control relays and discrete electronic circuit can control old industrial equipment, but also more common. mainly these two relatively
38、cheap and you can meet the old-fashioned, simple (or simple) industrial equipment. so he can see them now, however these two control modes (relay and discrete electronic circuits) are these fatal flaws: (1) cannot adapt to the complex logic control, (2) only for the current project, the lack of comp
39、atibility and (3) not reforming the system with equipment improvements. spring for the development of chinas modern industrial automation technology the substantial increase in the level of industrial automation, completed the perfect relay of the computer too much. in terms of controlling the compu
40、ter showed his two great advantages: (1) each of the hardware can be installed on one or more microprocessors; (2) the official designer of the software writing content control is all about. now in several ways in the context of industrial automation can often be seen in three ways: (1) programmable logical controller (referred to as ipc); (2) distributed control system (dcs for short), and (3) the programmable logical controller (plc for short). 2.1.2 plc and the ipc and dcs contrast contrast 1, each of the three technologies of origins and developmen
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