智能全自动称重包装系统控制研究
发布时间：2019-05-06 07:30
【摘要】：智能全自动称重包装系统是现代化工业的产物,广泛应用于农业、化工、食品等行业,可以十分有效地为这些行业提高劳动生产率、降低消耗。 一个完整的自动称重包装控制系统是由几个子系统所组成的,本文从实际工程出发,研究分析了整个系统以及各子系统组成及工作原理。重点研究了称重控制子系统和热合控制子系统并进行设计分析。 由于动态称重系统是一个非线性、时变、滞后的系统,在控制算法方面,常规PID控制不能达到理想的控制效果,根据物料的下落过程,针对两级下料过程,设计了模糊神经网络PID控制策略,通过仿真分析,表明了该控制算法具有很大优越性,基于本课题选用PLC作称重控制器,另外根据实际下料系统模型设计了基于PLC控制的分段PID控制策略。仿真与实验结果表明：分段PID控制策略对动态称重控制效果良好。 热合控制系统也是系统中尤为重要的部分,本文对该子系统进行了工作原理流程分析,其核心是尽量使加热管装置处于恒温状态,或产生小范围的温度波动,为了实现这一要求,研究了固态继电器以及可控硅触发电路的性能,选择触发更为优越的可控硅触发方式,提出并设计了基于模糊PID控制策略的温度控制器,仿真和实验证明本控制策略实现了系统控制要求。设计完成PLC程序及人机交互界面等并且投入实际生产工艺中。 本文还进行了称重控制、热合控制子系统的调试,以及对整体系统在实验室进行联调。在LabVIEW虚拟仪器软件的基础上,以及数据采集系统的方法,设计了上位机远程监控系统,此监控系统对系统实现实时数据监测、报警控制等,其界面友好,操作简易,提高了系统的性能效率,实现了远程计算机通过网络监控实际运行系统。
[Abstract]:Intelligent automatic weighing packaging system is the product of modern industry. It is widely used in agriculture, chemical industry, food and other industries. It can effectively improve labor productivity and reduce consumption for these industries. A complete automatic weighing package control system is composed of several subsystems. In this paper, the whole system, the composition and working principle of each subsystem are studied and analyzed from the practical project. The weighing control subsystem and thermal control subsystem are studied and analyzed. Because the dynamic weighing system is a nonlinear, time-varying and time-delay system, the conventional PID control can not achieve the ideal control effect in terms of the control algorithm. According to the falling process of the material, the two-stage unloading process is aimed at. The fuzzy neural network PID control strategy is designed, and the simulation analysis shows that the control algorithm has great advantages. Based on this subject, PLC is chosen as the weighing controller. In addition, a piecewise PID control strategy based on PLC control is designed according to the actual cutting system model. The simulation and experimental results show that the piecewise PID control strategy has a good effect on dynamic weighing control. The thermal control system is also an important part of the system. The working principle and flow chart of the subsystem are analyzed in this paper. The core of the system is to keep the heating tube in the constant temperature state as far as possible, or to produce a small range of temperature fluctuations. In order to achieve this requirement, the performance of solid-state relay and thyristor trigger circuit is studied, and the better trigger mode is chosen. A temperature controller based on fuzzy PID control strategy is proposed and designed. Simulation and experiments show that the control strategy realizes the system control requirements. Design and complete the PLC program and human-computer interface and put into the actual production process. This paper also carries on the weighing control, the thermal control subsystem debugging, and carries on the joint adjustment to the whole system in the laboratory. On the basis of LabVIEW virtual instrument software and the method of data acquisition system, the remote monitoring system of upper computer is designed. The monitoring system realizes real-time data monitoring, alarm control and so on. The interface is friendly and the operation is simple. It improves the performance and efficiency of the system and realizes the remote computer monitoring the actual running system through the network.
【学位授予单位】：扬州大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TB486.3
本文编号：2469992
[Abstract]:Intelligent automatic weighing packaging system is the product of modern industry. It is widely used in agriculture, chemical industry, food and other industries. It can effectively improve labor productivity and reduce consumption for these industries. A complete automatic weighing package control system is composed of several subsystems. In this paper, the whole system, the composition and working principle of each subsystem are studied and analyzed from the practical project. The weighing control subsystem and thermal control subsystem are studied and analyzed. Because the dynamic weighing system is a nonlinear, time-varying and time-delay system, the conventional PID control can not achieve the ideal control effect in terms of the control algorithm. According to the falling process of the material, the two-stage unloading process is aimed at. The fuzzy neural network PID control strategy is designed, and the simulation analysis shows that the control algorithm has great advantages. Based on this subject, PLC is chosen as the weighing controller. In addition, a piecewise PID control strategy based on PLC control is designed according to the actual cutting system model. The simulation and experimental results show that the piecewise PID control strategy has a good effect on dynamic weighing control. The thermal control system is also an important part of the system. The working principle and flow chart of the subsystem are analyzed in this paper. The core of the system is to keep the heating tube in the constant temperature state as far as possible, or to produce a small range of temperature fluctuations. In order to achieve this requirement, the performance of solid-state relay and thyristor trigger circuit is studied, and the better trigger mode is chosen. A temperature controller based on fuzzy PID control strategy is proposed and designed. Simulation and experiments show that the control strategy realizes the system control requirements. Design and complete the PLC program and human-computer interface and put into the actual production process. This paper also carries on the weighing control, the thermal control subsystem debugging, and carries on the joint adjustment to the whole system in the laboratory. On the basis of LabVIEW virtual instrument software and the method of data acquisition system, the remote monitoring system of upper computer is designed. The monitoring system realizes real-time data monitoring, alarm control and so on. The interface is friendly and the operation is simple. It improves the performance and efficiency of the system and realizes the remote computer monitoring the actual running system through the network.
【学位授予单位】：扬州大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TB486.3
【参考文献】
中国期刊全文数据库 前10条
1 杨明朗;王红;;人机交互界面设计中的感性分析[J];包装工程;2007年11期
2 廖亮;;西门子人机界面组态软件WinCC flexible使用经验[J];电工技术;2008年12期
3 陈宝远,房国志,于晓洋;多级给料粉状物料称重系统的预测控制算法[J];电机与控制学报;2005年03期
4 朱小襄;ModBus通信协议及编程[J];电子工程师;2005年07期
5 武锋;可编程控制器PLC的基本原理及应用[J];电子世界;2002年11期
6 杨忠仁,饶程,邹建,彭珍莲;基于LabVIEW数据采集系统[J];重庆大学学报(自然科学版);2004年02期
7 吴卫荣;变频器的选用及故障干扰处理[J];工业控制计算机;2003年08期
8 ;西门子推出适合基本应用的Sinamics V20变频器[J];低压电器;2012年14期
9 张铁壁;多传感器数据融合技术在智能压力检测中的应用[J];河北工程技术高等专科学校学报;2003年02期
10 李正杰;;全自动称重包装机器人码垛成套设备介绍[J];机器人技术与应用;2007年05期
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