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采用NI公司的LabVIEW 7.1软件和6024E数据采集卡为开发工具,对干燥箱进行了炉温测控实验平台的设计与实现,硬件上还采用了可控硅调节器和双向可控硅电路控制电炉丝电流量进而控制温度的方法,软件上使用了NI公司的PID控制算法软件包并在此基础上进行了控制系统的前面板及程序框图的设计,并在实验室搭建了硬件实验平台,软件运行无误并与硬件联调后,结果显示系统运行可靠稳定,可较好地实现炉温的准确控制,实际投运后用工程试凑法整定出了理想的PID参数,长时间运行结果良好,实验证明该系统控制准确,精度较高,有很高的实用价值和广阔的应用前景.
Using NI LabVIEW 7.1 software and 6024E data acquisition card as development tools, oven temperature measurement and control experiment platform design and implementation, the hardware also uses the SCR regulator and two-way thyristor control electric furnace wire Current and temperature control methods, the software used in the NI company’s PID control algorithm package and on the basis of the control system of the front panel and block diagram design, and in the laboratory to build a hardware experimental platform, software operation Correct and hardware-linked, the results show that the system is reliable and stable operation, can achieve accurate temperature control, the actual put into operation after the trial try to set the ideal PID parameters, good results for a long time, the experiment It is proved that the system has accurate control and high precision, which has high practical value and broad application prospect.