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空压机联控系统设计

发布时间:2018-08-23 13:20
【摘要】:本文研究的是一套较完善的空气压缩机联控系统。空气压缩机作为工业生产过程中的一种动力输出设备,普遍应用于各种生产环境。目前多数生产环境对空压机输出气压的稳定性,准确性和实时性要求并不高。然而随着现代工业生产精细化管理,许多工厂对空压机系统要求越来越高。为提高生产线气压控制的高精度,低能耗,迅速响应等要求,该系统应运而生。 该系统设计以项目要求为依据,通过结构化建模处理,将整个控制系统按功能划分为:输入输出模块,空压机控制模块,顺序切换模块,通讯模块,分气缸PID调节模块和报警模块。为便于用户操作管理,该系统的人机交互界面使用Wincc开发,可在Windows系统上稳定运行。使用该HMI(人机交互界面)可以远程控制系统管辖的各种设备,较之手工抄表的传统工作方式更加安全高效。系统还具备历史查询功能和趋势分析功能,为生产分析,流程管理提供了有效的分析手段。系统设计中有以下三点重点工作: 1.将软件工程中的结构化编程思路应用于PLC项目开发,在项目过程中体现出诸多优势。如程序结构简明清晰,便于程序修改和系统调试,为项目后期的收尾工作节约了大量时间等。 2. Modbus轮询法控制数据通讯。该方法在通讯收到干扰的情况下,较传统的时序法通讯更为高效稳定。提高数据读写的稳定性和可靠性,为整个系统奠定了良好的通信基础。 3.使用面向对象的编程思路开发空压机控制模块。提高该模块的扩展性和通用性,从而提高整个系统的扩展性和可维护性,为系统升级和二次开发提供便利。 该系统实施后在不影响实际工作需求的情况下降低供气管网压力,节能降耗;减少空压机工作时间,并且可以通过调整不同机器的工作状态平衡各机器的工作损耗;为工厂的设备维护检修,升级换代提供方便。通过自动化程序控制空压机工作,减少了人员操作失误的几率,提高了控制的实时性和准确性,有利于工厂的智能生产管理。
[Abstract]:This paper studies a set of air compressor control system. As a kind of power output equipment in industrial production, air compressor is widely used in various production environments. At present, the stability, accuracy and real-time of air compressor output pressure are not high in most production environments. However, with the fine management of modern industrial production, many factories are demanding more and more air compressor system. In order to improve the high precision, low energy consumption and rapid response of air pressure control in production line, the system emerges as the times require. The design of the system is based on the project requirements. Through structured modeling, the whole control system is divided into input and output module, air compressor control module, sequential switching module and communication module. Separate cylinder PID regulation module and alarm module. In order to facilitate user operation and management, the man-machine interface of the system is developed with Wincc and can run stably on the Windows system. The HMI (man-machine interface) can be used to remotely control all kinds of devices under the control of the system, which is more safe and efficient than the traditional manual meter reading. The system also has historical query function and trend analysis function, which provides an effective analysis method for production analysis and process management. The system design has the following three key tasks: 1. The structural programming idea in software engineering is applied to the development of PLC project, which shows many advantages in the process of the project. Such as simple and clear program structure, easy to modify the program and system debugging, for the end of the project to save a lot of time. 2. Modbus polling method controls data communication. This method is more efficient and stable than the traditional sequential method when the communication is disturbed. Improve the stability and reliability of data reading and writing, and lay a good communication foundation for the whole system. 3. The control module of air compressor is developed by object-oriented programming. The extensibility and generality of the module are improved, and the extensibility and maintainability of the whole system are improved. It is convenient for system upgrade and secondary development. The system can reduce the pressure of gas supply network, save energy and reduce consumption, reduce the working time of air compressor, and balance the working loss of each machine by adjusting the working state of different machines. For the factory equipment maintenance and repair, upgrade to provide convenience. The work of air compressor is controlled by automatic program, which reduces the probability of personnel operation error, improves the real-time and accuracy of control, and is beneficial to the intelligent production management of the factory.
【学位授予单位】:湖北大学
【学位级别】:硕士
【学位授予年份】:2013
【分类号】:TH45;TP273

【参考文献】

相关期刊论文 前1条

1 李津;;PID控制器的控制规律及参数整定[J];科技资讯;2012年22期



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