对双极性温控过程的毕业论文.doc

南阳理工学院
本科生毕业设计(论文)
学院(系):电子与电气工程学院
专业: 自动化
学生:
指导教师:
完成日期 2012 年 5 月
南阳理工学院本科生毕业设计(论文)
对双极性温控过程的
监控设计及分析
Monitoring Design and Analysis of Bipolarity
Temperature Control Process Based on

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南阳理工学院本科毕业设计(论文)

对双极性温控过程的
监控设计及分析
Monitoring Design and Analysis of Bipolarity
Temperature Control Process Based on
学院(系) : 电子与电气工程学院
专业: 自动化
学生姓名:
学号:
指导教师(职称): )
评阅教师:
完成日期:
南阳理工学院
Nanyang Institute of Technology
对双极性温控过程的监控设计及分析
自动化专业
[摘要]本课题在S7-300 PLC中自主设计专用的温度PID算法,监控设计和参数整定,能够用加热冷却双极性控制方式实现程序曲线的控制功能。监控界面上绘制了控制系统的三维管道仪表流程图、报警图、温控曲线趋势图等画面,为了显示程序设定曲线,设计了设定温度的六点算法。根据对温控过程监控曲线如升温、保温、降温的特点和系统的调节时间,超调量,稳态误差等性能指标的分析,为PID控制算法设计和修改外围控制程序的设计提供依据。利用凑试法和工程整定法对PID参数进行整定,以使系统达到最佳的控制效果。为最终实现“双极性温控PID算法模块”的设计做了很好的铺垫。
[关键词]PID整定;监控;性能指标;曲线分析
Monitoring Design and Analysis of Bipolarity
Temperature Control Process Based on
Automation Specialty CHEN Li
Abstract: This topic devises independently specialized PID algorithm of temperature in the S7-300 PLC with monitoring design and parameter setting, to be able to realize program curve control function in the heating- cooling bipolarity control mode. There are the three-dimensional pipeline flow chart meters and alarm figure and temperature curve trend diagram picture in the monitoring system software interface, while six slgorithm is designed in order to show program setting curve. The paper provides the basis for PID control algorithm design and the design of modifiing periphery the control program according to the analysis of these performance indexs of the characteristics of temperature rising and keeping and cooling, adjusting time and overshoot and steady-state error of the system in the monitoring curve of temperature control process .Use the method of attempting and Engineering setting method to adjust PID parameters, in order to make the system to achieve the best effect of control. Finally the paper for the realization of "dual polarity temperature control