Investigation of a homodyne and a heterodyne laser interferometer for dynamic force measurement

被引：6
|
作者：
Zhang, L [1 ]
Kumme, R [1 ]
机构：
[1] CIMM, Beijing, Peoples R China
来源：
SIXTH INTERNATIONAL CONFERENCE ON VIBRATION MEASUREMENTS BY LASER TECHNIQUES: ADVANCES AND APPLICATIONS | 2004年 / 5503卷
关键词：
laser interferometer; vibration; shock; homodyne; heterodyne; calibration; accelerometer; dynamic force;
D O I：
10.1117/12.579622
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Homodyne and heterodyne laser interferometers can be used for dynamic force calibration and for acceleration measurement with sinusoidal and with shock excitation. The characteristics of both types of interferometers in acceleration measurement are compared in this paper. The data acquisition system comprises a four channels ADC card and a digital multimeter to sample the interferometer and force transducer or accelerometer signals synchronously. The nonlinearity effects of homodyne and heterodyne interferometers in acceleration measurement are analyzed. A transducer is calibrated using both interferometers and good accordance is demonstrated.
引用
收藏
页码：608 / 615
页数：8
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