Simulation approach and causality evaluation for an active noise control system

被引：17

作者：

Janocha, H ^{[1
]}

Liu, B ^{[1
]}

机构：

[1] Univ Saarland, Lab Proc Automat, D-66041 Saarbrucken, Germany

来源：

IEE PROCEEDINGS-CONTROL THEORY AND APPLICATIONS | 1998年 / 145卷 / 04期

关键词：

active noise control; simulation; causality evaluation;

D O I：

10.1049/ip-cta:19982113

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

An approach to simulate the performance of an active noise control system is proposed. The simulated result is shown to be a good approximation to that of a real system. By means of this approach some examples which may not be easily realisable in practical implementations are studied. Results concerning causality and filtered-x-type algorithms are interesting. Simulations show that the investigated active noise control system needs a considerable causality margin to perform well. This is explained by the inverse modelling nature of the selected feedforward controller. An example of the delayed inverse modelling of a nonminimum-phase system is given in which the quality of the inverse modelling depends on the delays.

引用

页码：423 / 426

页数：4

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