基于Multitone信号的伺服系统频率特性测试方法研究

Research on Frequency Response Testing Method for Servo System Based on Multitone Signal

摘要:

提出了一种频率特性测试方法,该方法以Multitone信号作为激励信号来减少测试时间,并运用相关分析法作为数据处理方法来提高测试精度；以某型舵机系统为例,对该方法进行了实验验证；实验结果表明,其测试精度与传统的测试方法基本相同,测试时间减少一半；该方法能有效减少噪声对测量结果的影响,适合频率特性的快速高精度测试。

Abstract:

A new testing method for frequency response is put forward. This method uses Multitone Signal as excitation signal in order to reduce testing time and uses correlation analysis as data processing method in order to improve testing precision. An experiment was conducted on a steering gear to verify this method. The experimental results show that the accuracy of this testing method was approximately the same as that of the traditional testing method, and the testing time reduced by half. This method can effectively reduce the impact of noise on the measurement results and is suitable for rapid and high-precision test of frequency response.