Patent · US Active

Method and apparatus for heating current control of a pulsed X-ray tube

US9265135B2 · kind B2 · utility

0Cited by

1References

20Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Rudolf Auernhammer · Ellingen, DE
Andreas Böhme · Koblenzer Straße, DE
Johannes Walk · Buckenhof, DE

Key dates

Filing date	Jan 9, 2014
Grant date	Feb 16, 2016
Priority date	—
Expiry date	Aug 7, 2034

Classification

Technology area (CPC H)Electricity
CPC primaryH05G1/34
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A method and an associated apparatus for controlling a heating current flowing through an emitter of a pulsed X-ray tube during pulse pauses are provided. The heating current is controlled by comparing a measured actual value of the heating current with a predefinable desired value of the heating current. A low-pass filtering of the actual value of the heating current is effected before the comparison. A time constant of the low-pass filtering is equal to a thermal time constant of the emitter. A correction of the actual value of the heating current is provided before the low-pass filtering by a first correction value. The first correction value is determined such that a tube current control during the pulses is not compensated for by the heating current control in the pulse pauses.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.