US 9,810,090 B2
Method for determining the oscillation parameters of turbo-machine blades and a device for putting the same into practice
Danilin Aleksandr Ivanovich, Samara (RU); CHernyavskij Arkadij Zhorzhevich, Tol'yatti Samarskoj obl. (RU); Danilin Sergej Aleksandrovich, Samara (RU); and Gretskov Andrej Aleksandrovich, Samara (RU)
Filed by Samara State Aerospace University, Samara (RU)
Filed on Jun. 29, 2015, as Appl. No. 14/754,563.
Claims priority of application No. 2015103552 (RU), filed on Feb. 3, 2015.
Prior Publication US 2016/0222818 A1, Aug. 4, 2016
Int. Cl. H01L 21/00 (2006.01); H01L 29/10 (2006.01); F01D 21/00 (2006.01); H01L 51/42 (2006.01); H01L 27/30 (2006.01); F01D 17/02 (2006.01)
CPC F01D 21/003 (2013.01) [F01D 17/02 (2013.01); H01L 27/307 (2013.01); H01L 51/428 (2013.01); F05D 2260/80 (2013.01); F05D 2260/83 (2013.01); F05D 2270/334 (2013.01); F05D 2270/44 (2013.01); F05D 2270/803 (2013.01)] 4 Claims
OG exemplary drawing
1. A method for determining the oscillation parameters of turbo-machine blades, comprising:
when the blade tip travels in front of a sensor, reading values of a single pulsed signal formed by the sensor are obtained in a number that is not lower than that of unknown parameters of a harmonic or polyharmonic oscillation of the blade, and
the origin of a single pulsed signal readings obtained for each blade is synchronized with the blade tip position relative to the sensor according to a given level of the single pulsed signal;
then the values of the harmonic or polyharmonic oscillation parameters of the blade are calculated with the use of the obtained values of the single pulsed signal reading origins and of the value of the turbo-machine shaft revolution period.