X-ray tube anode drive speed monitor including flux pickup coil

Details X-ray tube anode drive speed monitor including flux pickup coil X-ray tube anode drive speed monitor including flux pickup coil

1996-08-23

1998-10-27

Snow, Walter E.

Electricity: measuring and testing

Electrical speed measuring

Including speed-related frequency generator

324160, 324163, 378 94, G01P 348, G01P 354

Patent

active

058282106

ABSTRACT:
A method for monitoring a rotor speed of an X-ray tube anode drive includes acquiring axial flux pickup data from the rotor, using the axial flux pickup data to provide a flux spectrum, and estimating the rotor speed by analyzing the flux spectrum. The step of acquiring axial flux pickup data can include situating an axial leakage flux pickup coil so as to pick up a flux signal from an X-ray tube anode drive rotor while the rotor rotates. An analog flux signal can be converted to a digital flux signal and a fast Fourier transform can be used to transform the digital flux signal into a flux spectrum. The flux spectrum can be used to estimate a drive frequency and a slip frequency and the speed can be estimated by subtracting the slip frequency from the drive frequency and dividing by the number of pole pairs of the X-ray tube anode drive.

REFERENCES:
patent: 534596 (1895-01-01), Atwood et al.
patent: 3943356 (1976-03-01), Schmutzer
patent: 4761703 (1988-08-01), Kliman et al.
patent: 4839585 (1989-06-01), Bicknell
patent: 5049815 (1991-09-01), Kliman
patent: 5530343 (1996-06-01), Bowers, III et al.
"Condition Monitoring of Electrical Drives" by J. Penman, et al, Paper 4512FB (P1,S6), Nov. 1985, 4 Pages.
"Leakage Field Changes of an Induction Motor as Indication of Nonsymmetric Supply" by MS Erlicki, et al, IEEE Transactions on Inedustry & Gen. Applications, vol. IGA-7, No. 6 Nov. 12, 1971 pp. 713-717.

Affiliated with

Also associated with

Rating

X-ray tube anode drive speed monitor including flux pickup coil does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with X-ray tube anode drive speed monitor including flux pickup coil, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and X-ray tube anode drive speed monitor including flux pickup coil will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1616036