Title:
METHOD AND DEVICE FOR MEASURING VIBRATION CHARACTERISTIC
Document Type and Number:
Japanese Patent JP3930783
Kind Code:
B
Abstract:
PROBLEM TO BE SOLVED: To detect respective vibration states of an external vibration and an object to be vibrated, without contact, and to accurately measure the vibration characteristic, without influencing a measurement system at all.
SOLUTION: A vibration source 2 for vibrating the object 3 to be vibrated and the object 3 to be vibrated are irradiated with a laser light from probes 4 and 5, respectively, and the non-contact vibration detection is simultaneously performed with Doppler vibration measuring instruments 6 and 7. The gain of the vibration or the phase difference can be accurately measured by comparing detection signals by a frequency analyzer 8.
Inventors:
Saiki, Kazunori
Application Number:
JP2002000259041
Publication Date:
March 16, 2007
Filing Date:
September 04, 2002
Export Citation:
Assignee:
FUJITSU TEN LTD
International Classes:
G01H17/00; G01H9/00; G01M7/02; G01H17/00; G01H9/00; G01M7/00; (IPC1-7): G01H17/00; G01H9/00; G01M7/02