基于S-函数的液位实时控制系统

Real-time control system of level based on S-function

文中采用水箱液位为研究对象,使用MATLAB/Simulink下的S-函数设计开发液位实时控制系统,通过PCI-1711数据采集卡对液位高度进行实时数据采集和输出。由于在过往基于MATLAB/Simulink的实时控制系统研究中,往往需要生产数据采集卡的公司开放一定的代码权限来实现计算机与数据采集卡间的通信,因而带来二次开发的不便。文中研究另辟蹊径,在仅有的有权限基础上,编写一系列MEX文件及数据实时采集的S-函数,完成了基于S-函数的实时液位控制系统。研究结果表明该系统设计简洁,使用方便,稳定性高,控制效果良好。

Tank level is the object for the research in designed by using S-function of MATLAB / Simulink, this paper. The level real-time control system is through the PCI-1711 data acquisition card for liquid level real-time data acquisition and output. Since the past research of real-time control system based on MATLAB / Simulink often requires the permission from the company of data acquisition card to open a certain code for communication between the computer and the data acquisition card, thus it brings the secondary development inconvenience. This paper chooses another way, just on the basis of the existing rights, writing a series of MEX files and real-time acquisition of S-functions to develop a level real-time control system. The results show that the system is simple in design, easy in use, high stability and good control effect.