【正文】 trol system design specifically for small and medium programmable puter controller (PCC) came into being. PCC integrates a standard PLC and industrial control puter features, multitask timesharing operating systems, data puting and processing power more powerful than the PLC. PCC formed with injection molding machine control system in order to achieve, including position control, speed control, temperature control, fault control and realtime display the whole process such as injection molding a variety of control can greatly improve the quality of plastic products will help enhance economic benefits. Control of the contents of the injection molding machine Injection molding machine process control system mainly consists of two parts: First, the temperature control system in order to right barrel, melt and mold temperature control。s actual requirements, arbitrary changes. PCC application modules from the multitask structure, the development of application software to the project has brought great convenience. Because it can easily control the project in accordance with the various parts of the different functional requirements, such as motion control, data acquisition, alarm, PID regulator puting, munications, control, namely the preparation of a control program module (task), these modules not only operate independently, the data between one another to maintain a certain interrelated, these modules through the step by step after the independence of the development and debugging can be downloaded to the PCC along with the CPU, in the regulation and management of multitasking operating systems run in parallel under the joint realization of the project control requirements. PCC a single task in the preparation of the different modules with a flexible choice of the characteristics of different programming languages, which means that not only in conventional PLC has been to people familiar ladder, instruction list language can continue to be used on the PCC, but users can be used more efficient and intuitive highlevel language (PL2020), which is a plete text for the control of language, BASIC technical personnel familiar with the syntax it will feel a kind of deja vu, which control requirements for the description of a very simple, intuitive. In addition, PCC39。 在設(shè)備制造過程中，預(yù)先設(shè)定的參數(shù)值，如從機器的鎖模力，循環(huán)時間，溫度等，在生產(chǎn)過程中予以保留。 閉環(huán)控制系 統(tǒng)采用了負反饋回路，抗干擾能力強，當注射速度，注射壓力，模腔溫度，模腔壓力，熔體溫度和壓力油，由于干擾，在生產(chǎn)過程中通過機器的偏差自適應(yīng)控制系統(tǒng)的干擾進行自動修正。 常用的注塑機控制系統(tǒng)有三種，即傳統(tǒng)的基于繼電器，可編程控制器和基于計算機的控制類型。 政協(xié)形成了注塑機控制系統(tǒng)，以實現(xiàn)包括位置控制，速度控制，溫度控制，故障控制和實時顯示整個過程中，如注塑成型的各種控制，可以大大提高塑料制品的質(zhì)量有利于提高經(jīng)濟效益。1℃ 。 因此，雙點，即表面，在同一時間在每桶深平行檢測設(shè)置熱電偶，將是相對穩(wěn)定的溫度曲線，有利于溫度控制精度 。 前一種方法中，以加熱載體的出口對象的控制溫度，相對簡單，并能滿足一般的溫度控制要求。 一般通過位移 /速度傳感器，壓力傳感器，閉環(huán)注射控制，高響應(yīng)伺服閥配合使用，實現(xiàn)注塑成型工藝，熔膠背壓，注射速度和精確控制的條件下包裝。 傳輸模式控制過程應(yīng)該是另一個重要的變量是位置。 可編程計算機控制器（ PCC）就是代表這新一代可編程控制器的發(fā)展趨 勢。 這種待遇，直接導(dǎo)致 “控制速度 ”，在應(yīng)用程序的大小取決于，這個結(jié)果是毫無疑問的高要求宗教在實時控制 I / O 通道。 PCC的應(yīng)用程序模塊，從多任務(wù)結(jié)構(gòu)，應(yīng)用軟件開發(fā)項目帶來了極大的便利。 在硬件結(jié)構(gòu)， PCC 的特點非常顯著。 PCC在工業(yè)控制中強大的優(yōu)勢，并展示了可編程控制器與工業(yè)控制計算機及 DCS（分布式工業(yè)控制系統(tǒng)）技術(shù)，融合的發(fā)展趨勢，雖然這仍然是一個相對年輕的技術(shù)，但在其多來越來越多的應(yīng)用領(lǐng)域，它正日益顯示出其發(fā)展?jié)摿?