Design of Quasi-Logarithmic Multisine Excitations for Robust Broad Frequency Band Measurements

被引：23

作者：

Geerardyn, Egon ^{[1
]}

Rolain, Yves ^{[1
]}

Schoukens, Johan ^{[1
]}

机构：

[1] Vrije Univ Brussel, Dept Fundamental Elect & Instrumentat ELEC, B-1050 Brussels, Belgium

来源：

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 2013年 / 62卷 / 05期

关键词：

Frequency response; measurement uncertainty; robustness; signal design; system identification;

D O I：

10.1109/TIM.2012.2232474

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The logarithmic distribution of spectral lines in excitation signals is widely used to measure the transfer functions of dynamic systems over a wide frequency band, covering several decades. Periodic signals are very popular in many advanced dynamic signal analyzers. Generating multitone periodic signals requires an equidistant frequency grid which conflicts with the logarithmic distribution, particularly at the low frequencies. In this paper, we offer an elegant solution to get around this problem using an improved choice for the amplitude spectrum of the multitone. We also offer a simple way to tune the frequency spacing of such a signal to allow for robust identification of the system under test.

引用

页码：1364 / 1372

页数：9

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