摘要
为降低PID控制在实际应用中的复杂程度,满足用户对温控精度的需求,本文开发了基于LabVIEW的PID自整定温度控制系统。该系统设计了固态继电器驱动电路和STC89C52单片机控制程序等硬件部分,利用LabVIEW中的工具包对PID自整定控制的程序面板及前面板进行设计,并在不同加热功率和变负荷条件下对系统进行实验验证。实验结果表明,在设定的加热功率和负荷下,双位控制的精度为-0.13℃^+0.27℃,与双位控制相比,温控精度可达±0.1℃。该系统提高了温度控制精度,操作简便,通用性强,满足绝大多数用户对温控精度的要求,可进一步应用到民用及工业领域。
In order to reduce the complexity of PID control in practical applications and meet the user′ s demand for temperature control accuracy, this paper develops a PID self-tuning temperature control system based on LabVIEW. The system is designed with hardware components such as solid state relay drive circuit and STC89C52 microcontroller control program. The program panel and front panel of the PID self-tuning control are designed by using the toolkit in LabVIEW, and the system is experimentally verified under different heating power and variable load conditions. The experimental results show that the accuracy of the two-position control is -0.13 ℃^+0.27 ℃ under the set heating power and load. Compared with the two-position control, the temperature control accuracy can reach ±0.1 ℃. The system improves the temperature control accuracy, is easy to operate, has strong versatility, and meets the requirements of most users for temperature control accuracy, and can be further applied to civil and industrial fields.
作者
李宁
郑艺华
LI Ning;ZHENG Yihua(School of Electromechanic Engineering, Qingdao University, Qingdao 266071, China)
出处
《青岛大学学报（工程技术版）》
CAS
2019年第2期27-32,共6页
Journal of Qingdao University(Engineering & Technology Edition)
基金
山东省重点研发计划项目(2015GSF117019)
