A long-stroke horizontal electromagnetic vibrator for ultralow-frequency vibration calibration

被引：36

作者：

He, Wen ^{[1
]}

Zhang, Xufei ^{[1
]}

Wang, Chunyu ^{[2
]}

Shen, Runjie ^{[3
]}

Yu, Mei ^{[4
]}

机构：

[1] Zhejiang Univ, State Key Lab Fluid Power Transmiss & Control, Zhejiang Prov Key Lab Adv Mfg Technol, Inst Adv Mfg Engn, Hangzhou 310027, Zhejiang, Peoples R China

[2] Beijing Inst Control Engn, Beijing 100190, Peoples R China

[3] Tongji Univ, Dept Control Sci & Engn, Shanghai 201804, Peoples R China

[4] Natl Inst Metrol, Beijing 100013, Peoples R China

来源：

MEASUREMENT SCIENCE AND TECHNOLOGY | 2014年 / 25卷 / 08期

基金：

中国国家自然科学基金;

关键词：

calibration; long stroke; vibrator; ultralow-frequency; distortion; LASER INTERFEROMETRY; SHOCK MEASUREMENTS; ACCELEROMETERS; REDUCTION; DESIGN; FORCE;

D O I：

10.1088/0957-0233/25/8/085901

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A novel long-stroke horizontal electromagnetic vibrator with maximum stroke of 1 m is proposed. To reply to the strong nonlinearity arising from long stroke, a closed double-magnetic circuit with optimal air gap, an electro-viscoelastic-suspension device and a track following device are adopted in the vibrator. Also, a compact moving component with a higher first-order natural frequency is designed to increase the operating frequency of the vibrator. Finally, experimental results show that the vibrator could output low distortion acceleration on its working platform from 0.002 Hz to 100 Hz, which verifies the validity of the proposed technologies and the applicability of the vibrator for an ultralow-frequency vibration calibration system.

引用

页数：6

共 16 条

[1]

[Anonymous], 160631 ISO

[2]

Fu Z, 2010, ELECT MACH CONTROL, V14, P91

[3] Magnetic measurement of harmonic vibrations with very low amplitudes [J].