NOISE-REDUCTION IN ZERO-CROSSING DETECTION BY PREDICTIVE DIGITAL FILTERING

被引：125

作者：

VAINIO, O

OVASKA, SJ

机构：

[1] Signal Processing Laboratory, Tampere University of Technology

[2] Department of Information Technology, Lappeenranta University of Technology

来源：

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS | 1995年 / 42卷 / 01期

关键词：

D O I：

10.1109/41.345846

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

A simple combination of nonlinear and linear digital signal processing methods is proposed for efficient noise reduction in zero crossing detectors. The method is very robust against strong impulsive noise, typically encountered in thyristor power converters, where reliable zero crossing detection is required for firing synchronization. A systematic design procedure is described for the proposed filter-based synchronization method, taking into account the specified line frequency tolerance. The fully digital signal processing approach allows compact implementations, and supports flexible interfacing to digital motor control systems.

引用

页码：58 / 62

页数：5

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