单变量系统建模与控制器设计的软件实现

工业过程对象一般可用带时间延迟的低阶单变量系统描述.针对工业控制对象,设计了一个新的软件,该软件从系统辨识得到控制对象模型,根据辨识模型进行PID控制器的设计,可指导手动控制器参数调节.该软件用Matlab实现系统辨识、控制器设计算法和GUI图形界面,可独立于Matlab运行;并在模型阶辨识准则、带时间延迟一阶模型近似、PID控制器设计饱和环节和非线性环节三个方面提出了新的方法.仿真结果表明,该软件设计的控制器具有良好的控制效果.

Software Implementation of Univariable System Modeling and Controller Design

Industrial process objects are usually described as low order systems with time delay.A new software which instructs the adjustment of manual controller is designed to build math model by system identification and design PID controller based on the identified model.The sys- tem identification algorithms,controller design algorithms and GUI of the software,which is able to run independently,are implemented in Matlab.New methods are put forward on aspects of model order identification criterion,model approximation of one order system with time-de- lay,as well as designing of saturation and non-linearity manipulation by PID controller.Simulation results show the satisfied control effectiv- ness.