Identification of Rotating Asymmetry in Rotating Machines by Using Reverse dFRF
Keyword(s):
Abstract A quick and easy but comprehensive identification method for asymmetry in an asymmetric rotor is proposed based on complex modal testing method. In this work, it is shown that the reverse directional frequency response function (reverse dFRF), which indicates the degree of asymmetry, can be identified with a simple method requiring only one vibration sensor and one exciter. To clarify physical realization associated with estimation of the reverse dFRF, its relation to the conventional frequency response functions, which are defined by the real input (exciter) and output (vibration sensor), are extensively discussed.
2001 ◽
Vol 215
(9)
◽
pp. 1053-1061
1993 ◽
Vol 20
(5)
◽
pp. 801-813
◽
2015 ◽
Vol 07
(04)
◽
pp. 1550065
◽
2018 ◽
Vol 18
(1)
◽
pp. 87-102
◽
Keyword(s):
2001 ◽
Vol 86
(6)
◽
pp. 2703-2714
◽
2019 ◽
Vol 1262
◽
pp. 012007