基于PLC的定量给料机控制系统设计论文（论文）word格式.doc

定量给料机PLC控制系统 摘 要 本课题所设计的调速式定量给料机是在消化吸收国外DEL型定量给料机的先进技术，结合国内建材行业使用称重设备的实际情况，进行国产化设计成功的一种集多种先进技术于一体的新型产品。它与微机、负荷传感器、速度传感器组合成微机控制配料系统或定量给料秤。该系统可对各种块、粒状非粘结性物料进行计量和定量给料控制，广泛用于水泥、矿山、化工、冶金、能源、粮食等工业部门。 本机由电机带动减速机，联接主动滚筒转动，从而使皮带运动，即可输送物料，物料在皮带上的重量通过测力机构检测后把信号输入控制器，同时皮带带速也通过测速装置把信号输入控制器进行计算。电机采用三相电机变频调速。秤重机构采用全荷式结构、双传感器，消除物料偏载对称重精度的影响。电机采用三相电机变频调速即通过调节变频器的输出频率达到调速的目的，变频器给定电压信号的范围是０～１0ＶPLC控制 Weight feeder PLC control systemAbstract Designed speed of the subject dosing machine type is type in the digestion and absorption of foreign DEL dosing machines advanced technology, combined with the use of weighing equipment, building materials industry, the actual situation, the domestic design success of a multi- advanced technology in one of the new product. It is with the computer, load sensor, speed sensor integrated into a cement plant or Feeding Scale. The system can be all kinds of blocks, non-caking granular materials for measurement and dosing control, widely used in cement, mining, chemical, metallurgy, energy, food and other industries. The machine driven by a motor reducer, join active drum rotation, so that belt campaign, you can transport materials, the weight of material in the belt through the dynamometer testing after the signal input controller, and also through the belt with a speed gun device Calculation of the signal input controller. Three-phase motor with frequency conversion motor. Weighing a fully-charged body structure, dual-sensor, partial elimination of material contained on the weighing accuracy. Three-phase motor with frequency control motor that is by adjusting the inverter output frequency to achieve the purpose of speed control, inverter voltage signal of a given range of 0 ~ 10V. Key words: dosing; frequency control; PLC control  目 录 引 言 1 第一章 绪论 2 1.1 系统及工艺简介 2 第二章 方案论证 3 2.1 系统总体结构 3 2.2调速系统电路设计和论证 3 2.3控制系统的硬件组成 12 第三章 软件设计 16 3.1 流程图 16 3.2 梯形图 17 3.3软硬件系统的调试 18 结 论 20 参考文献 23 谢 辞 24 引 言 随着我国经济的不断发展，社会高度信息化，新的高科技技术不断应用到各个方面中，使得智能自动化已成为一种发