回转式精油灌装机测控系统研究与实现

发布时间：2018-03-03 16:49

本文选题：精油灌装　切入点：伺服控制系统　出处：《长春工业大学》2017年硕士论文　论文类型：学位论文

【摘要】：灌装是化工、食品及制药等生产过程中最重要的生产环节。对流态产品灌装的准确与否将直接影响品牌形象和企业效益。本文以精油灌装系统为研究平台,以改善自动灌装机工艺设计、灌装精度、灌装效率及信息化程度为研究目标,针对系统成品率低、计量误差大、自动化程度不高等问题展开研究。具体内容包括:首先,通过对回转式精油灌装机系统进行结构改进,提高理瓶转盘、落内塞、下外盖等工作效率;其次,对以永磁同步电动机为主要控制对象搭建伺服系统数学模型,确定永磁同步电动机的矢量控制方式及其伺服系统数学传递函数,为实现精油高精度灌装奠定理论基础;再次,采用灰色预测PID复合的控制策略实现精油高精度灌装;最后,设计基于PLC、单片机的控制系统,完成精油灌装等一系列动作,实现灌装自动化。本文从灌装系统的整体方案入手,着重解决精油灌装控制系统运行不稳定、灌装精确性不高等问题,设计了一套能提高灌装系统稳定性和精确性的控制方案,在微量灌装领域具有一定的推广价值。
[Abstract]:Filling is the most important production link in the chemical, food and pharmaceutical production processes. The accuracy of the filling of the convective products will directly affect the brand image and enterprise benefits. This paper takes the essential oil filling system as the research platform. In order to improve the process design, filling accuracy, filling efficiency and information level of the automatic filling machine as the research goal, aiming at the problems of low finished product rate, large measurement error and low automation degree, the specific contents include: first of all, By improving the structure of the rotary essential oil filling machine system, improving the efficiency of rotating flask plate, falling inner plug, lower outer cover, etc. Secondly, the mathematical model of servo system is built for permanent magnet synchronous motor (PMSM) as the main control object. The vector control mode of permanent magnet synchronous motor and its mathematical transfer function of servo system are determined to lay a theoretical foundation for the realization of high precision filling of essential oil. Thirdly, the grey predictive PID compound control strategy is used to realize the high precision filling of essential oil. Finally, The control system based on PLC and MCU is designed to complete a series of actions, such as filling of essential oil, to realize filling automation. This paper starts with the whole scheme of filling system, and focuses on solving the unstable operation of the filling control system of essential oil. A set of control scheme which can improve the stability and accuracy of filling system is designed, which is worth popularizing in the field of micro filling.
【学位授予单位】：长春工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TB486

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