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基于Modelica语言的数字PID控制实验是在Modelica软件平台下进行实验,采用Modelica语言进行数字PID控制系统的建模和仿真工作,建模的系统由阶跃信号源、负反馈接口、PID控制器以及传递函数4个构件组成,系统连接好之后可通过改变PID参数来进行仿真实验。实验结果表明,2种基于不同平台的数字PID控制实验均能达到实验教学的目的要求,而后者对实验设备的要求更低,可考虑运用到实验教学中。
The experiment of digital PID control based on Modelica language is carried out under Modelica software platform. The modeling and simulation of digital PID control system are carried out by using Modelica language. The modeling system consists of step signal source, negative feedback interface, PID controller, Transfer function composed of four components, the system can be connected by changing the PID parameters to carry out simulation experiments. The experimental results show that the two kinds of digital PID control experiments based on different platforms can meet the purpose of experimental teaching, while the latter have lower requirements for experimental equipment and can be considered into experimental teaching.