基于PLC的计量加料自动控制系统

Automatic metering and dosing control system based on PLC

通过对传统染色工艺及其存在问题的分析,指出当前染色加工工艺要求助剂的注入方式是非线性计量加料。为此,设计了一种基于可编程控制器(PLC)的计量加料自动控制系统,它主要通过变频器与PLC的配合使用可以实现助剂的非线性计量加入。具体介绍了基于PLC的计量加料自动控制系统的构成、工作过程、工作原理、硬件设计和软件设计。该系统的实际应用效果表明,染色加工工艺的质量得到显著提高。

After analyzing the traditional process of dyeing and problems associated with it, the paper pointed out that nonlinear metering and dosing of assistants are required for the current dyeing technique. For this reason, an automatic control system of metering and dosing based on PLC （programmable logic controller） is designed in which the nonlinear metering and dosing of assistants is realized by combination use of the frequency changer and the PLC. A detailed discussion is made on the structure of the system, its working principle and process, and hardware and software design. The results of its application show that the dyeing quality is improved remarkably.