中国机械工程2016，Vol.27Issue(21)：2884-2889,6.DOI:10.3969/j.issn.1004-132X.2016.21.008
基于 Hilbert变换的全封闭压缩机转速测量
Speed Measurement of Miniature Reciprocating Refrigerant Compressor Based on Hilbert Transform
沈希 1孙哲 1徐鸣 1顾江萍 1金华强1
作者信息
摘要
Abstract
In recent years for refrigeration industry,refrigeration compressor rotation speed meas-uring precision demands were increasing.The traditional direct measurement method of compressor destructed itself,and indirect measurement method based on shell vibration,needed high require-ments for test conditions,and the measurement errors were bigger.To improve the measurement ac-curacy,and to meet the demands of industries,a signal extraction method was proposed based on Hil-bert transform herein,this method indirectly reflected the characteristics of the compressor rotation by the movement regularity of the piston and the induced electromotive force changes.This method is of high precision,strong anti-j amming.The errors are less than 2 r/min by compared with visual com-pressor,which meets the requirements of engineering.关键词
Hilbert变换/全封闭压缩机/转速测量/线性调频Z变换Key words
Hilbert transform/miniature reciprocating refrigerant compressor/speed measure-ment/chirp-Z transform分类
通用工业技术引用本文复制引用
沈希,孙哲,徐鸣,顾江萍,金华强..基于 Hilbert变换的全封闭压缩机转速测量[J].中国机械工程,2016,27(21):2884-2889,6.
