PLC_自动配料系统外文资料.doc

PLC automatic batching and weighing system design

There are many kinds of PLC definition. The international commission (IEC) is defined as of PLC programmable controller is a kind of digital computing operations, specially designed for the electronic system in industrial environment application and design. It USES programmable Qi, used in its internal storage to perform the logic operation, sequence control, timing, counting and arithmetic operation instruction, and through digital, analog input and output, the control various types or production process. Programmable controller and related equipment, should press easy and industrial control system as a whole, easy to extend its function principle design. PLC with communication networking function, it makes PLC and PLC, between the PLC and the PC and other intelligent equipment to exchange information between, forming a unified whole, realize scattered centralized control. Most PLC has RS - 232 interface, and some built-in have to support their communication protocol interfaces. Ingredients workers receive daily production scheduling, will in turn for each feedstock. According to how much weighing ingredients, first calculated the weight of each component in various components, and then the material barrels material taking, to electronic says on the packaging weighing
Along with the development of science and technology, Automatic batching and weighing system has been widely used in metallurgy, coal, chemicals, building material industry, etc. Automatic batching and weighing system can be set according to the input ratio and flow control of material flow, thereby achieve control of product quality and yield of the objective is to realize the automatic production process, and intelligent, enterprise's scientific management, safe and stable production and energy consumption is the important technical means. Computer control system in the production of ingredients used not only can improve the yield and quality ingredients and greatly reduce the labor intensity, and post to improve production efficiency.
The auto-dispensation system permanent flow control uses the PID adjustment，the current capacity measurement control is measures the deviation and the frequency conversion velocity modulation union. Introduces the flow-control mode and control process of the system based on the systems manufacturing process of the allocation. This essay also illustrates the hardware setting and software designing of PLC selection, frequency conversion control of allocation system in detail.
Ingredients worker receives daily production operations the table, it will turn for each raw material weighing｡ according to the number of ingredients, first calculate the weight of each ingredient, and then the drums in a variety of components in the reclaimer and sent e - said weighing on the final packaged｡ In this process, the heavy workload of the workers, the high error rate, weighing the weight of no monitoring, no records of production data can not guarantee the production process｡ paper to PC, programming, programmable logic control device (PLC), field bus technology and other modern industrial control technology, developed by PC, as the host computer to PLC as the next-bit machine's automatic batching system｡ throughout the production process, once the production plan worked out, the computer will follow plan for each weighing raw materials, eliminating the need for manual intervention｡ In this process, the workers just to get material, by the computer that sent the electronic data checking weight, reduce the workload of workers to improve work efficiency
Automatic batching and weighing system is a kind of integrating transportation, measuring, mixing in an online automatic weighing apparatus measured dynamic. This system consists of one or more ingredients belt scales, can show not only transient flow and total amount of conveyor belt, can also according to the value of the instantaneous flow deviation to adjust to the size of the feed to flow, constitute a closer setting control system, and achieve constant flow of purpose. Along with the rapid development of industrial production, electronic belt scale increasing demand of burdening system, was widely applied in a pan of metallurgy, power, chemical industry, food industry etc of process control. At the same time, along with the computer technology and the rapid development of the automatic control technology, the system application technology more advanced, more extensive, field can take the scheme is more agile diversity, and, due to the system often costly, users of the actual conditions are also different. Therefore, careful, choose a reasonable, perfect, economic solution appears especially important
Along with the enterprise scale expansion and development, automatic batching control system has undergone considerable development Batching production system is a system in which a variety of raw materials according to a certain proportion are mixed together, for processing to produce a product of the process Among them, the ingredients are indispensable in the production of key ingredients, accurate product quality has important influence With the development of information technology and the development of automatic control technology, a new generation of batching control system will towards information and intellectualization. In this paper a programmable controller (PLC) as the core of the automatic batching control system, complete with a higher cost, the application of automatic blending control system PLC because of its powerful, easy to use, high reliability, is often used as the field data gathering and the equipment control. In this paper, automatic batching system development present situation, application prospects are discussed in this paper, the traditional ingredients on the basis of the system, presents the overall design of the system and the basic structure of the system, and the related equipment, such as electronic proportioning scale structure and control principle, technical parameters were introduced Then the paper gives the batching control system electrical control part of the main composition and the use of PLC realize field batching equipment dynamic coordinated control methods, thereby enabling the proportioning system can work automatically according to the demand feeding, weighing, batching process, well presented batching control system part of the control process In the actual operation, to achieve the desired results, for other control system also has the very good reference value.
The overall design philosophy of the Automatic batching and weighing system of the belt is: Before the belt is put into operation, the settlement value of the flow of the supplies is established on the keyboard by the to carry on the belt. After the system is put into normal running, loading signal of the belt that the one-chip computer samples and the speed signal leaves, walk belt speed signal and belt instantaneous weight, unit of length is it can calculate out belt twinkling of an eye flow F of supplies to multiply (t) . The flow can be in charge of the number and show, offer the craft data to to consult in the twinkling of an eye. 8031 systems and then compare the actual value of the flow instead of the establishing value, calculate out controlling amount vi after PID regulates operation, and then change into the electric current and output the signal, and then enlarged and controlled leading the open angle of silicon controlled rectifier, realize regulating the function of the electricity electromechanical magnetism clutch excitation electric current of slippery difference, thus regulate the rotational speed of the slippery difference electrical machinery of executive body, enable transporting the flow of supplies on belts to stabilize in the adjacent place of settlement value as much as possible, have a good static index and dynamic performance.
The main functions are monitoring software, according to the production of formula and yield target weighing process of automatic control, statistic data management and weighing achieve print. System software has a variety of on-site control mode and the input, a formula of adapting to different engineering requirements, users can set alarm print time parameters, use the menu interface, easy to use, users can through the mouse or keyboard operate on the ingredients, control and management system.
Through comparative analysis control systems and computer control system is on its own features, and establish a system based on the overall design control system of thought, to focus on control and decentralized administration for guiding principles and use the computer and PLC make up the form of a structure to achieve the goal. control systems. Second on a hardware system, including the old machine of choice, sensors and weigh the choice of that instrument. the upper in the economy and meet the requirements of the practical principle, by comparing IP and brand personal computers and decided to use the computer, the famous brand in the production is largely complete control of, through comparative analysis selection of german siemens s7 -200 series of the PLC . PLC high reliability can meet the demands of control. the sensor selection of the resistance strain in weigh the choice of sensor, the main consideration of the quantum and precision to two items, the algorithms and control of the PLC control. this scheme of control efficiency and accuracy of relatively high, with all sectors of the ingredients produced a very good and guiding role of the application.

PLC自动配料称重系统的设计
There are many kinds of PLC definition. The international commission (IEC) is defined as of PLC programmable controller is a kind of digital computing operations, specially designed for the electronic system in industrial environment application and design. It USES programmable Qi, used in its internal storage to perform the logic operation, sequence control, timing, counting and arithmetic operation instruction, and through digital, analog input and output, the control various types or production process. Programmable controller and related equipment, should press easy and industrial control system as a whole, easy to extend its function principle design. PLC with communication networking function, it makes PLC and PLC, between the PLC and the PC and other intelligent equipment to exchange information between, forming a unified whole, realize scattered centralized control. Most PLC has RS - 232 interface, and some built-in have to support their communication protocol interfaces. Ingredients workers receive daily production scheduling, will in turn for each feedstock. According to how much weighing ingredients, first calculated the weight of each component in various components, and then the material barrels material taking, to electronic says on the packaging weighing
PLC的定义有许多种。国际委员会（IEC）的定义是：可编程控制器是一种数字运算操作，专为在工业环境下应用而设计的电子系统。它采用可编程序的气，用来在其内部存储执行逻辑运算，顺序控制，定时，计数和算术运算指令，并通过数字式，模拟式的输入和输出，控制各种类型或生产过程。可编程控制器及其有关设备，都应按易于与工业控制系统作为一个整体，易于扩充其功能的原则设计。PLC具有通信联网的功能，它使PLC与PLC，PLC与PC之间的信息交换和其他智能设备之间，形成一个统一的整体，实现分散集中控制。多数PLC具有RS - 232接口，还有一些内置有支持各自通信协议的接口。配料工人收到每天的生产调度，将依次对每种原料。根据多少称量配料，先计算每种成分的重量的各个部件，然后料桶料，电子称上的包装称重
Along with the development of science and technology, Automatic batching and weighing system has been widely used in metallurgy, coal, chemicals, building material industry, etc. Automatic batching and weighing system can be set according to the input ratio and flow control of material flow, thereby achieve control of product quality and yield of the objective is to realize the automatic production process, and intelligent, enterprise's scientific management, safe and stable production and energy consumption is the important technical means. Computer control system in the production of ingredients used not only can improve the yield and quality ingredients and greatly reduce the labor intensity, and post to improve production efficiency.
随着科学技术的发展，自动配料称重系统已广泛应用在冶金，煤炭，化工，建材等行业，自动配料称重系统可以根据输入的比例和物质流的流量控制，从而实现产品质量和产量的控制目标是实现生产过程自动化，智能化，企业的科学管理，安全稳定生产和能源消耗的重要技术手段。在配料生产过程计算机控制系统的使用不仅可以提高药材产量和质量，大大降低劳动强度，提高生产效率和后。
The auto-dispensation system permanent flow control uses the PID adjustment，the current capacity measurement control is measures the deviation and the frequency conversion velocity modulation union. Introduces the flow-control mode and control process of the system based on the systems manufacturing process of the allocation. This essay also illustrates the hardware setting and software designing of PLC selection, frequency conversion control of allocation system in detail.
自动配料系统的恒流量控制采用PID调节，流量测量控制措施和变频调速的结合偏差。介绍了流控制模式和基于控制分配系统的制造过程的系统过程。本文阐述了硬件设置和软件PLC的选型设计，详细的分配系统的变频控制。
Ingredients worker receives daily production operations the table, it will turn for each raw material weighing｡ according to the number of ingredients, first calculate the weight of each ingredient, and then the drums in a variety of components in the reclaimer and sent e - said weighing on the final packaged｡ In this process, the heavy workload of the workers, the high error rate, weighing the weight of no monitoring, no records of production data can not guarantee the production process｡ paper to PC, programming, programmable logic control device (PLC), field bus technology and other modern industrial control technology, developed by PC, as the host computer to PLC as the next-bit machine's automatic batching system｡ throughout the production process, once the production plan worked out, the computer will follow plan for each weighing raw materials, eliminating the need for manual intervention｡ In this process, the workers just to get material, by the computer that sent the electronic data checking weight, reduce the workload of workers to improve work efficiency
配料工人接到日常生产作业表，将各原料按配方称量｡数，首先计算各成分的重量，然后在取料机各种部件的鼓和发送电子秤在最终包装｡在这个过程中，工人的工作量大，出错率高，体重没有监测体重，没有生产数据的记录不能保证生产过程进行编程，｡PC，可编程逻辑控制器（PLC），现场总线技术等现代工业控制技术，由PC机作为上位机，PLC作为下一个位机的自动配料系统｡在整个生产过程中，一旦生产计划的制定，计算机将按照每个称量原材料计划，消除在这个过程中需要人工干预｡，工人们只是为了得到材料，通过发送电子数据采取计算机ng的重量，降低了工人的工作量，提高工作效率
Automatic batching and weighing system is a kind of integrating transportation, measuring, mixing in an online automatic weighing apparatus measured dynamic. This system consists of one or more ingredients belt scales, can show not only transient flow and total amount of conveyor belt, can also according to the value of the instantaneous flow deviation to adjust to the size of the feed to flow, constitute a closer setting control system, and achieve constant flow of purpose. Along with the rapid development of industrial production, electronic belt scale increasing demand of burdening system, was widely applied in a pan of metallurgy, power, chemical industry, food industry etc of process control. At the same time, along with the computer technology and the rapi