外文翻譯---基于現(xiàn)場總線監(jiān)測系統(tǒng)的plc控制制造系統(tǒng)-plc設計(文件)
【正文】 ory is based on the fact that the PLC memory is organized into three regions: input image memory, output image memory, and internal memory[4]. The PLC program uses a cyclic scan in the main program loop such that periodic checks are made to the input variables. The program loop starts by scanning the inputs to the system and storing their states in fixed memory locations (input image memory). The ladder program is then executed rungbyrung. Scanning the program and solving the logic of the various ladder rungs determine the output states. The updated output states are stored in fixed memory locations (output image memory). The output values held in memory are then used to set and reset the physical outputs of the PLC simultaneously at the end of the program scan[4]. As we know, logic control is a remarkable property of PLC, and it can be applied to efficiently handle analog data[2]. 1) Analog data acquisition and transformation Analog inputs and outputs such as pressure and temperature need to be measured online. For instance, temperature is first acquired by the Platinum resistances. A signal transformation module then converts the measured resistance value into the voltage range of 15V. The output of this transformation module is finally collected and transmitted back to the above PLC. 2) PLC control algorithms The analog variables could be any controlled variable, ., temperature or pressure in our winding system. As a matter of fact, there exist two control modes, auto and manual. In the manual mode, operators modify the output values according to the desired levels。 while in the auto mode, output values are regulated by the predesigned control algorithms. It is worth mentioning that the outputs of PLC are always incremental values. Although autotuning PID controllers can be employed here, manual tuning is always used at the beginning of the production for routine initialization, and after that the system is switched to the auto mode. We emphasize that user39。而主要的問題存在于膜的速 度和張力之間的耦合。一旦發(fā)生膜破裂，經(jīng)營者需要再次開放清盤商會。所以，用一個監(jiān)測系統(tǒng)，監(jiān)測緊張的波動程度，以避免膜破裂是非常必要的。 至于交流的速度，使得通信和傳感器輸入需要高速反應和智能設備，需要大量的數(shù)據(jù)通信。 CCLink 的監(jiān)測系統(tǒng)是由主站，奴隸站，個人電腦，逆變器，伺服電機，遠程I/O 單元等組成。 本文介紹了基于 CCLink 現(xiàn)場總線的智能監(jiān)控系統(tǒng)，其中包括個人電腦和目的是控制和信息管理的可編程邏輯控制器。奴隸站和主站之間的每個離散監(jiān)測單位是現(xiàn)場總線最重要的部分。 圖 1 CCLink 的網(wǎng)絡圖 數(shù)字職能監(jiān)測單位應取決于實際需求。從這些傳感器上獲得的數(shù)據(jù)經(jīng)過 PLC 的處理，顯示在人機界面上，如圖 2 所示。它的工作狀態(tài)是控制智能監(jiān)測的每個單位，將得到數(shù)據(jù)和異常信息進行處理以挽救它們。最多可以有 64 個站可以連接到這樣的現(xiàn)場總線中。 它是用來控制總卷繞系統(tǒng)與 FX 系列的 PLC 纏繞系統(tǒng)和舒展共存系統(tǒng)的行為的。因此， PLC 程序是在 PLC 控制的制造系統(tǒng)中的監(jiān)測基礎。每個指令由 CPU 解碼和執(zhí)行。 PLC 程序采用主程序循環(huán)掃描的方法，例如輸入的變數(shù)定期檢查。更新的輸出量存儲在固定的內(nèi)存中（輸出圖像記憶）。舉例來說，溫度是測量鉑的電阻以獲得的所需要的量。事實上，存在著兩種控制方式，自動和手動。我們強調(diào)，用戶的面向模糊邏輯控制器的使用的經(jīng)驗，也能進一步改善這里的生產(chǎn)性能。為此目的，模糊推理被用來調(diào)整 PID 的因素，用這樣的方法， PID 的因素可以根據(jù)系統(tǒng)狀態(tài)和植物參數(shù)的變化來衡量。所以主要的任務是如何控制伺服電機能準確的工作。它的成果已經(jīng)證明了它具有很大的優(yōu)勢，而且它在實踐中的利潤也將會有很大的改善?；诂F(xiàn)場總線的鍍膜生產(chǎn)過程在本文當中已經(jīng)給了很充分的說明了。膜的張力是由負載細胞控制的，它控制伺服電機
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