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Control method and apparatus of filament currents

A filament current and filament voltage technology, applied in the field of control, can solve problems such as poor real-time performance and anti-interference ability, PID controller cannot control filament current well, parameters cannot meet control requirements, etc.

Active Publication Date: 2016-04-20
NEUSOFT MEDICAL SYST CO LTD
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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

Method used

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  • Control method and apparatus of filament currents

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Embodiment Construction

[0046] The terminology used in this application is for the purpose of describing specific embodiments only, not to limit the application. As used in this application and the claims, the singular forms "a", "the" and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the term "and / or" as used herein is meant to include any and all possible combinations of one or more of the 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 information of the same type from one another. For example, without departing from the scope of the present application, first information may also be called second information, and similarly, second information may also be called first information. Dependin...

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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 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 (the electrons generated by the heating of the filament, under the action of the negative and positive two-stage high-voltage electric field, the current formed by the high-speed movement to the anode, called the tube current) will affect the image grayscale and other indicators, and the tube current is mainly composed of The tube voltage is determined by the filament current, and the main factor affecting 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, a PID (Proportion Integration Differentiation, pr...

Claims

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Application Information

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IPC IPC(8): H05B37/02
CPCH05B47/10Y02B20/40
Inventor 赵明宇
Owner NEUSOFT MEDICAL SYST CO LTD
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