一种基于改进双通道继电反馈测试系统频率特性的新方法

A Novel Test Method for System Frequency Characteristic via Improved Two-Channel Relay Feedback

提出了一种测试系统频率特性的新方法———改进双通道继电反馈测试。与传统测试方法相比 ,这种方法能避免困难的信号设计过程 ,不需要独立的信号发生设备。更重要的是 ,它是一种闭环测试方法 ,测试过程中系统处在受控状态。对典型过程对象的仿真取得了非常好的结果 。

A novel test method for extracting frequency characteristics is presented.Compared with traditional methods,difficult test signal design is avoided and isolated signal producing device isn't needed. Most important,it is a kind of closed loop test and lead to the least effect on process.The simulation to classical processes shows excellent result and verifies the validity of presented new test scheme.