Rapid transition method for microwave component micro-discharge development process
A microwave component and development process technology, applied in the field of space microwave component reliability research, can solve problems such as slow calculation speed and large calculation amount
Active Publication Date: 2020-09-25
XI AN JIAOTONG UNIV
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Problems solved by technology
[0004] In the micro-discharge simulation of dielectric microwave components, when solving the electrostatic field generated by space charge, accumulated charge and its induced charge, it is necessary to iteratively solve the Poisson equation, which requires a large amount of calculation and slow calculation speed
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[0036] The specific implementation manner of the present invention will be further explained below in conjunction with the specific embodiments and the accompanying drawings.
[0037] The present invention is divided into following major steps:
[0038] The first step: use the fitting method in mathematical calculation to perform linear fitting and exponential fitting on the historical change curves of the number of particles in space and the accumulated charge on the surface of the medium, respectively;
[0039] The second step: establish the criterion for the stable development state of the micro-discharge, and obtain the change law of the spatial distribution of the accumulated charge on the surface of the particles and the medium;
[0040] Step 3: Calculate the time to reach the middle and late stages of micro-discharge according to the number of space particles and fitting parameters at saturation;
[0041] Step 4: Transition directly to the middle stage of micro-dischar...
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The invention discloses a rapid transition method for a microwave component micro-discharge development process. The method comprises the steps: establishing a to-be-solved microwave component model by adopting three-dimensional CAD modeling software / electromagnetic field simulation software, and storing the microwave component in an STL format; solving electromagnetic field distribution in the microwave component by adopting electromagnetic field simulation software, exporting the electromagnetic field distribution in a frequency domain form, and setting initialization parameters which mainlycomprise mesh generation, boundary information reading, electromagnetic field files, particle loading parameters and the like; carrying out linear and exponential curve fitting on a historical changecurve of the number of particles and accumulated charges on the surface of a medium; establishing a micro-discharge stable development criterion in combination with fitting information; achieving theaccurate judgment of the micro-discharge stable development state, calculating the time for reaching the middle and later periods of micro-discharge according to the number of space particles duringsaturation and fitting parameters, performing simulation by directly transiting to the middle period of micro-discharge in combination with space distribution, obtained in the early period, of particles and accumulated charges on the surface of a medium, and achieving the rapid calculation of microwave component micro-discharge.
Description
technical field [0001] The invention belongs to the technical field of reliability research of space microwave components, and in particular relates to a rapid transition method for the micro-discharge development process of microwave components. Background technique [0002] With the development of satellite payloads towards high power and miniaturization, dielectric materials and their components are more and more widely used in aerospace microwave devices. However, increased communication capabilities and reduced geometries have dramatically increased the likelihood of microdischarges occurring in satellite systems. [0003] Once the micro-discharge effect occurs in the dielectric microwave components, it is likely to cause outgassing, which will further generate low-pressure discharges and cause the devices to be burned. Especially in space-borne equipment, damaged microwave components are difficult to repair and replace, which will make the space-borne equipment functio...
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IPC IPC(8): G06F30/25G06F119/02
CPCG06F30/25G06F2119/02
Inventor 李永东翟永贵王洪广林舒李韵崔万照
Owner XI AN JIAOTONG UNIV