二阶控制系统的Multisim建模与仿真  

Multisim Modeling and Simulation of Second-order Control System

作　　者：邵桂荣[1] 

机构地区：[1]运城学院物理与电子工程系,山西运城044000

出　　处：《山西大同大学学报（自然科学版）》2016年第5期31-33,37,共4页Journal of Shanxi Datong University(Natural Science Edition)

基　　金：山西省教育厅重点教学研究改革项目[J2014104]

摘　　要：针对现有基于Matlab的自动控制原理实验存在的建模、编程难,硬件电路缺乏等缺点,以典型二阶控制系统为例,采用Multisim12设计其硬件实现电路,推导出传递函数及系统处于不同阻尼状态下参数的取值范围。仿真分析了阶跃响应、频率响应及开环对数频率特性,并得到了较为形象、准确的实验结果。该实验过程即接近实际操作效果,又具有仿真的优点,有助于培养学生设计、调试系统的能力。For the faults of the existing Automatic Control Principle＇s experiments, such as modeling and programming difficulty and the lack of hardware circuit. The paper designs the hardware circuit of typical second-order control system using Multisim12, the transfer function are deduced and parameters＇ value scope are calculated based on different damping state. Step and Frequency response and open-loop logarithmic frequency characteristics are simulated. At last, visual and accurate experimental results are obtained. The experiment process is close to the actual operation effect and has the advantages of the simulation. The Multisim can help to cultivate students＇ ability about designing and debugging system.

关 键 词：二阶控制系统 MULTISIM 时域 频域 

分 类 号：TP1[自动化与计算机技术—控制理论与控制工程]