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A method and device for controlling filament current

A filament current and filament voltage technology, applied in the field of control, can solve the problems that the PID controller cannot control the filament current well, poor real-time performance and anti-interference ability, and parameters cannot meet the control requirements, so as to achieve real-time performance and anti-interference Effects that are powerful, improve image quality, and improve static and dynamic performance

Active Publication Date: 2019-04-12
NEUSOFT MEDICAL SYST CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the parameters of the PID controller (proportional coefficient K p , integral coefficient K i and differential coefficient K d ) After setting, the parameters will not change according to the real-time situation. When the voltage changes suddenly, the set parameters may no longer meet the control requirements, resulting in the PID controller not being able to control the filament current well.
Therefore, the real-time performance and anti-interference ability of the above-mentioned control methods are poor

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  • A method and device for controlling filament current
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  • A method and device for controlling filament current

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[0046] The terminology used in this application is only for the purpose of describing specific embodiments, rather than limiting this application. The singular forms of "a", "said" and "the" used in this application and claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" as used herein refers to any or all possible combinations of one or more associated listed items.

[0047] It should be understood that although the terms first, second, third, etc. may be used in this application to describe various information, the information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this application, the first information may also be referred to as second information, and similarly, the second information may also be referred to as first information. Depending...

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Abstract

The invention provides a control method and apparatus of filament currents. The method comprises the following steps: obtaining voltage input values, and calculating voltage change parameters by use of the voltage input values; obtaining control parameter correction values by use of the voltage change parameters; correcting control parameters by use of the control parameter correction values; obtaining voltage output values by use of the control parameters after correction; and controlling the filament currents by use of the voltage output values. According to the technical scheme provided by the invention, the corrected control parameters can meet control requirements, a PID controller can better control the filament currents, the filament currents maintain rapid, stable, accurate and reliable at a filament preparation stage and a filament exposure stage, the real-time performance and the anti-interference capability are quite high, the dynamic and static performance is good, static and dynamic performance of tube currents is improved accordingly, and the image quality is improved.

Description

Technical field [0001] The present invention relates to the field of control technology, in particular to a method and device for controlling filament current. Background technique [0002] In medical diagnosis, the tube current (electrons generated by the heating of the filament, the current formed by the high-speed movement of the anode and the anode under the action of the Yin and Yang two-level high-voltage electric field, called the tube current) will affect the image gray level and other indicators, and the tube current is mainly composed of The tube voltage and the filament current are determined, and the main influencing factor of the tube current is the filament current. Based on this, how to well control the filament current so that the filament current maintains rapidity, stability, accuracy, and reliability during the filament preparation stage and the filament exposure stage becomes particularly important. [0003] At present, PID (Proportion Integration Differentiati...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B37/02
CPCH05B47/10Y02B20/40
Inventor 赵明宇
Owner NEUSOFT MEDICAL SYST CO LTD