外文翻譯--制袋機(jī)控制系統(tǒng)研究

1、<p><b>　　附錄一</b></p><p>　　Bag-making machine control system research</p><p>　　The bag-making machine control system is controls based on the labor machine the integration comput

2、er control system, controls machine the control software by the labor to complete the system bag process each kind of function coordination control, and substitutes the original mechanical major axis by the electronic ax

3、is, had guaranteed strictly each printing unit's synchronization, provides one kind for the bag-making machine based on the computer control integration solution. The bag-making mac</p><p>　　Bag-making m

4、achine's control system mainly includes: The main actuation electrical machinery servocontrol, the fixed-length positioning control system, the tensity control system, the temperature control system, to feed control

5、system and the electro-optic correct an error the control system. At present, the most bag-making machine control system's host actuation electrical machinery servocontrol and the fixed-length positioning control sys

6、tem is a body, namely controls take the labor machine fo</p><p>　　In the system bag process, the thin film volume material launches continuously, and corrects an error through the electro-optic with the adva

7、nced gear to enter in continuously the folding formation installment. Thin film after folding formation, carries on the hauling and the localization by the fixed-length localization draw gear enters the heat-seal working

8、 procedure. Makes in the bag flow the heat-seal working procedure, is causes the laminated film heat-seal spot using the heating wire heati</p><p>　　Bag-making machine's control system must complete the

9、main servo electrical machinery and the feed bag hauling servo electrical machinery's motion control, this contained feed bag's fixed-length positioning control, the system must also complete the feed bag to corr

10、ect an error, to feed, the tensity and the heat-seal temperature control. The control system controls take the labor machine as a core, carries on each control function the hardware expansion, controls machine the contro

11、l software thr</p><p>　　The main servo electrical machinery's types of control are the speed control, the main electrical machinery leads the hot knife vertical motion through four pole organizations, th

12、rough controls the main electrical machinery driver's speed to control hot knife's state of motion. The feed bag hauling servo electrical machinery's control is the position control, must realize the fixed-le

13、ngth localization hauling. These three servo electrical machinery's coordination control can guarantee the haulin</p><p>　　Fixed-length, the positioning control must have custom-made in firmly the bag pr

14、ocess bag's length, the heat-seal and the dinking die position. The longitudinal localization is refers to the thin film carries on the fixed-length hauling the control, enables the product to have the good uniformit

15、y. The longitudinal localization completes by two feed bag hauling servo electrical machinery, the servo electrical machinery must move according to the S shape curve addition and subtraction ship promptl</p><

16、p>　　The crosswise localization, namely the electro-optic corrects an error to control, refers to the route which the control plastic membrane walks, enables it not to deviate the fixed track, must overcome so-called “

17、the fishtail” the question. At present is independent the electro-optic to correct an error the equipment to use the photoelectric sensor to examine the plastic membrane boundary, when occurs runs, corrects an error the

18、controller to correct an error the servo to send out the control si</p><p>　　The plastic membrane is one flexible material, will have the stretch elongation under certain temperature and the tensity, both wi

19、ll cause thickness to be uneven, and will have the bulging, will affect the product the quality. The tensity control's quality has the material effect to the product quality, when complete machine movement in high sp

20、eed is especially obvious. The tensity control mainly exists in putting between the material and to feed and two carry-over pinch rolls. Is similar correc</p><p>　　Heat-seal temperature control quality immed

21、iate influence system bag's rate of finished products. Some plastic membrane under 5 degrees temperature differences, the stretch situation will have the very big change, its heat-seal will become very bad, therefore

22、 the temperature also will be an important link. The temperature control mainly uses the intelligent program/temperature controller, this kind of controller has the thermo-element input channel and the temperature contro

23、l output channel. Use</p><p><b>　　附錄二</b></p><p><b>　　制袋機(jī)控制系統(tǒng)研究</b></p><p>　　制袋機(jī)控制系統(tǒng)是基于工控機(jī)的一體化計(jì)算機(jī)控制系統(tǒng),由工控機(jī)中的控制軟件來完成制袋過程的各種功能的協(xié)調(diào)控制,并由電子軸來替代原先的機(jī)械長(zhǎng)軸,嚴(yán)格保證了各印刷單元的

24、同步,為制袋機(jī)提供一種基于計(jì)算機(jī)控制的一體化解決方案。制袋機(jī)是軟包裝生產(chǎn)線上利用塑料薄膜制作袋子的加工設(shè)備。</p><p>　　制袋機(jī)的控制系統(tǒng)主要包括:主驅(qū)動(dòng)電機(jī)伺服控制系統(tǒng)、定長(zhǎng)定位控制系統(tǒng)、張力控制系統(tǒng)、溫度控制系統(tǒng)、進(jìn)給控制系統(tǒng)和光電糾偏控制系統(tǒng)。目前,多數(shù)制袋機(jī)控制系統(tǒng)的主驅(qū)動(dòng)電機(jī)伺服控制系統(tǒng)和定長(zhǎng)定位控制系統(tǒng)是一體的,即以工控機(jī)為控制核心形成一個(gè)三伺服控制系統(tǒng),而張力、光電糾偏、溫度和進(jìn)給控制系統(tǒng)獨(dú)

25、立于這個(gè)三伺服控制系統(tǒng)。各個(gè)系統(tǒng)相互獨(dú)立的控制形式增加了制袋機(jī)協(xié)調(diào)控制的難度,也降低了整個(gè)控制系統(tǒng)的可靠性,為進(jìn)一步提高系統(tǒng)的自動(dòng)化性能,須研制新的控制方案。</p><p>　　在制袋過程中,薄膜卷材連續(xù)展開,并通過光電糾偏和進(jìn)給機(jī)構(gòu)源源不斷地進(jìn)入折疊成型裝置中的。薄膜經(jīng)過折疊成型后,由定長(zhǎng)定位牽引裝置進(jìn)行牽引和定位進(jìn)入熱封工序。制袋流程中的熱封工序,是利用電熱絲加熱使復(fù)合薄膜熱封部位的熱封層變成粘流狀態(tài),再借

26、助于刀具的壓力,使上下兩層熱封材料彼此熔合在一起,冷卻后能保持一定的強(qiáng)度,具有良好的密封性等。熱封好的袋子可以根據(jù)需要進(jìn)行打孔和切口等加工,最后由裁切裝置完成裁切,制成</p><p><b>　　成品袋。</b></p><p>　　制袋機(jī)的控制系統(tǒng)要完成主伺服電機(jī)和料袋牽引伺服電機(jī)的運(yùn)動(dòng)控制,這包含了料袋的定長(zhǎng)定位控制,系統(tǒng)還要完成料袋糾偏、進(jìn)給、張力和熱封溫度控

27、制。控制系統(tǒng)以工控機(jī)為核心,進(jìn)行各個(gè)控制功能的硬件擴(kuò)展,通過工控機(jī)中的控制軟件將各個(gè)功能整合以改善系統(tǒng)協(xié)調(diào)控制性能,形成一個(gè)計(jì)算機(jī)控制系統(tǒng)。此外,遠(yuǎn)程診斷技術(shù)應(yīng)用于制袋機(jī)能夠增強(qiáng)制袋機(jī)的可維護(hù)性。</p><p>　　主伺服電機(jī)的控制形式是速度控制,主電機(jī)通過四桿機(jī)構(gòu)帶動(dòng)熱封刀上下運(yùn)動(dòng),通過控制主電機(jī)驅(qū)動(dòng)器的速度來控制熱封刀的運(yùn)動(dòng)狀態(tài)。料袋牽引伺服電機(jī)的控制是位置控制,要實(shí)現(xiàn)定長(zhǎng)定位牽引。這三個(gè)伺服電機(jī)的協(xié)調(diào)控制

28、能夠保證牽引與熱封和裁切間的協(xié)調(diào)工作。放料和料袋進(jìn)給伺服電機(jī)可以與這個(gè)三伺服電機(jī)控制結(jié)合到一起形成一個(gè)多軸伺服驅(qū)動(dòng)控制系統(tǒng)。利用基于PC機(jī)總線的多軸運(yùn)動(dòng)控制器可以完成多個(gè)伺服電機(jī)的運(yùn)動(dòng)控制,這樣簡(jiǎn)化了伺服驅(qū)動(dòng)控制系統(tǒng)的硬件,利于各個(gè)伺服電機(jī)的協(xié)調(diào)控制。運(yùn)動(dòng)控制器通過工控機(jī)總線與其進(jìn)行通訊,這樣使用工控機(jī)控制軟件即可監(jiān)控運(yùn)動(dòng)控制器,實(shí)現(xiàn)對(duì)各個(gè)伺服電機(jī)的控制。</p><p>　　定長(zhǎng)、定位控制要確定制袋過程中袋子的

29、長(zhǎng)度、熱封和裁切的位置?？v向定位是指對(duì)薄膜進(jìn)行定長(zhǎng)牽引的控制,使產(chǎn)品有良好的一致性?？v向定位由兩個(gè)料袋牽引伺服電機(jī)來完成,伺服電機(jī)要按S形曲線加減速運(yùn)動(dòng)進(jìn)行間歇式定長(zhǎng)定位牽引,以保證牽引動(dòng)態(tài)過程平穩(wěn)。兩個(gè)伺服電機(jī)要保持同步運(yùn)動(dòng),這可以通過運(yùn)動(dòng)控制器來完成同步控制。對(duì)于同步精度要求高的場(chǎng)合,可以使用轉(zhuǎn)矩綜合反饋形式的控制策略,實(shí)現(xiàn)兩軸的耦合。精度要求一般時(shí),可以使用同步主參考形式的控制策略。兩種控制策略硬件要求基本一致,只是軟件復(fù)雜程度不

30、同。</p><p>　　橫向定位,即光電糾偏控制,是指控制塑料膜行走的路線,使它不偏離固定的軌道,要克服所謂的“蛇行運(yùn)動(dòng)”問題。目前獨(dú)立光電糾偏設(shè)備采用光電傳感器來檢測(cè)塑料膜邊界,當(dāng)發(fā)生跑偏時(shí),糾偏控制器給糾偏伺服機(jī)構(gòu)發(fā)出控制信號(hào),使其通過絲杠帶動(dòng)料卷架運(yùn)動(dòng)以糾正塑料膜。糾偏控制器可由工控機(jī)取代,通過AD和DA板卡來采集偏差信號(hào)和控制糾偏伺服機(jī)構(gòu)。利用工控機(jī)的軟件資源可以設(shè)計(jì)出非常友好的人機(jī)界面,這是傳統(tǒng)光電糾

31、偏控制器所無法完成的。</p><p>　　塑料膜是一種柔性材料,在一定的溫度下及張力下會(huì)發(fā)生拉伸變形,既會(huì)造成厚薄不均,又會(huì)產(chǎn)生折皺,影響產(chǎn)品的質(zhì)量。張力控制的好壞對(duì)產(chǎn)品質(zhì)量有重要影響,在整機(jī)運(yùn)行于高速時(shí)尤為明顯。張力控制主要存在于放料與進(jìn)給之間和兩個(gè)牽引輥之間。類似與光電糾偏控制,目前張力控制多數(shù)由獨(dú)立的張力控制系統(tǒng)來完成,主要包括張力控制器、張力檢測(cè)器、張力表、離合器及制動(dòng)器。全自動(dòng)張力控制是有張力檢測(cè)器來

32、直接測(cè)定卷料的張力,然后把張力數(shù)據(jù)</p><p>　　變成張力信號(hào)傳回張力控制器,張力控制器來調(diào)整離合器或制動(dòng)器的勵(lì)磁電流以控制卷料的張力。張力控制器和張力表完全由工控機(jī)取代,信號(hào)的轉(zhuǎn)換和輸出可以由AD和DA板卡完成,參數(shù)的設(shè)定、顯示和張力調(diào)整值的計(jì)算則由系統(tǒng)控制軟件來完成。這樣通過工控機(jī)的軟硬件資源來取代獨(dú)立張力控制系統(tǒng)部分設(shè)備,可以簡(jiǎn)化系統(tǒng),節(jié)約成本。</p><p>　　熱封溫度控

33、制的好壞直接影響著制袋的成品率。有的塑料膜在5度溫差下,拉伸情況會(huì)發(fā)生很大的變化,它的熱封性會(huì)變得很差,因此溫度也是一個(gè)重要的環(huán)節(jié)。溫度控制主要采用智能程序/溫度控制器,該類控制器具有熱電偶輸入通道和溫度調(diào)節(jié)輸出通道。采用熱電偶作為制袋機(jī)的測(cè)溫傳感器,并采取模糊PID控制的策略和PWM技術(shù),使得加熱功率連續(xù)可調(diào),完全可以達(dá)到1℃以內(nèi)的偏差要求。圖2為系統(tǒng)結(jié)構(gòu)框圖。該系統(tǒng)使用了功能強(qiáng)大的多軸運(yùn)動(dòng)控制器和AD/DA板卡、I/O擴(kuò)展板卡等硬件

34、設(shè)備來取代一些通用的控制器,由工控機(jī)的控制軟件完成系統(tǒng)控制和協(xié)調(diào)。這種基于工業(yè)計(jì)算機(jī)的一體化控制策略簡(jiǎn)化了系統(tǒng)硬件,增大了集成度,這不僅提高了系統(tǒng)的可靠性,還方便系統(tǒng)功能的協(xié)調(diào),降低了控制系統(tǒng)的成本。系統(tǒng)在一個(gè)控制平臺(tái)———工控機(jī)內(nèi)實(shí)現(xiàn)各個(gè)控制功能,提高可靠性,方便系統(tǒng)功能協(xié)調(diào),去除通用控制設(shè)備的沉余功能,以降低成本。集成的主要方式是使用各種基于PC機(jī)總線的板卡,這包括多軸運(yùn)動(dòng)控制器,AD/DA板卡等,以取代各個(gè)獨(dú)立控制系統(tǒng)的控制器。各