介绍了直接利用Matlab的数据采集工具箱、图形用户接口和方便的计算能力完成控制系统低频频率响应特性测试虚拟仪器的一种设计方法.首先简要介绍了相关法频率响应特性测试的原理,接着论述了该虚拟仪器系统的硬软件结构,随后详细讨论了利用Matlab进行相关法频率特性测试软件设计的关键问题及其解决方法,最后给出了所设计虚拟仪器的实验结果.%A virtual instrument design of control system frequency response analyzer (FRA) based on Matlab and its DAQ toolbox, GUI and computation ability is introduced. Firstly, a brief review to spectrum measurement by correlation computation is given. Followed, the hardware requirement for this virtual instrument is expounded. Later, the software solutions to the key problems are given later. The experimental result is provided in the end.
展开▼
