Biphase quadrature drive for an x-ray tube rotor

Details Biphase quadrature drive for an x-ray tube rotor Biphase quadrature drive for an x-ray tube rotor

1988-01-13

1989-05-09

Fields, Carolyn E.

X-ray or gamma ray systems or devices

Source

Electron tube

378 93, 378 94, H01J 3510

Patent

active

048295515

ABSTRACT:
An x-ray tube (10) imaging system, such as a computed tomography scanner, includes a cathode (40) for generating a stream of electrons. A rotating anode (42) is placed in a path of the electron stream and generates x-rays as a result of collisions therewith. An induction rotor (44) causes rotation of the anode as a result of electromagnetic interaction with a stator (48) comprised of two windings: a run winding (50) and a phase winding (52). The run winding and the phase winding are connected to three nodes (54, 58, 60), one of which is common to both. The three nodes are actively driven with run, common, and phase signals, respectively. Actively driving the three nodes increases bus drive voltage over 40% over that achieved by half-bridge drives.

REFERENCES:
patent: 3963930 (1976-06-01), Fiocca et al.
patent: 4259580 (1981-03-01), Vogler
patent: 4540930 (1985-09-01), Siedband

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