Investigating into Minimum Detectable Displacement Signal in Image-Based Vibration Measurement

2021 ◽  
pp. 882-894
Author(s):  
Miaoshuo Li ◽  
Guojin Feng ◽  
Fengshou Gu ◽  
Andrew Ball
Keyword(s):  
Vibration Measurement ◽  
Displacement Signal

ACCURACY RATING MEASUREMENT OF VIBRATION ELECTROMECHANICAL DEVICES

2019 ◽  
Vol 1 (7) ◽  
pp. 42-45
Author(s):  
V. A. Golubkov ◽  
V. F. Shishlakov ◽  
A. G. Fedorenko ◽  
E. Yu. Vataeva
Keyword(s):  
Technical Condition ◽  
Rotor System ◽  
Vibration Measurement ◽  
Random Errors ◽  
Mass Ratio ◽  
Signal Flow Graph ◽  
Bond Graphs ◽  
Rotor Systems ◽  
Electromechanical Devices ◽  
Main Components

Electromechanical devices consist mainly of rotor systems. Vibration is the result of the interaction of the elements of the rotor system and is largely determined by the accuracy of manufacturing elements at the production stage and defects arising in the process of operation. The main components of the rotor systems that affect vibration are bearings. To determine the technical condition of the bearings and the service life of the rotor system, it is necessary to accurately measure the unobservable vibrations of the rotor. The article describes the model of the channel for measuring the vibration of an electromechanical system, built using the apparatus of bond graphs. The transfer function is obtained by analyzing the signal flow graph. The systematic and random errors of vibration measurement are analyzed depending on the mass ratio between the system case and the vibration transducer for various sensor masses and attachment rigidity.

Vibration measurement with a micromachined mirror in a very-short external cavity laser

2004 ◽  
Vol 116 (2) ◽  
pp. 232-240 ◽  
Author(s):  
Franck Chollet ◽  
Gopal M. Hegde ◽  
Zhang Xuming ◽  
Liu Aiqun ◽  
Anand Asundi
Keyword(s):  
External Cavity ◽  
Vibration Measurement ◽  
External Cavity Laser ◽  
Cavity Laser
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