AN FFT-BASED NOVEL-APPROACH TO NONINVASIVE SPEED MEASUREMENT IN INDUCTION-MOTOR DRIVES

被引：40

作者：

FERRAH, A

BRADLEY, KJ

ASHER, GM

机构：

[1] Department ofElectrical and Electronic Engineering, University of Nottingham, Nottingham

来源：

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 1992年 / 41卷 / 06期

关键词：

D O I：

10.1109/19.199410

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：

A novel sensorless speed detection method based on the fast Fourier transform (FFT) spectral analysis is described. This paper is mainly concerned with the extraction of the speed information contained in the rotor slot-ripple harmonics created in the airgap of the induction motor using digital signal-processing techniques. A nonintrusive all-digital speed detector suitable for steady-state operation has been designed around an Intel/80386-based microcomputer equipped with an 80387 coprocessor. The detector performance with and without load over a wide range of speeds is described.

引用

页码：797 / 802

页数：6

共 8 条

[1] VARIABLE SPEED INDUCTION-MOTOR DRIVES USE ELECTRONIC SLIP CALCULATOR BASED ON MOTOR VOLTAGES AND CURRENTS [J].