scholarly journals Predictive Model for Conducting Electromagnetic Interference by Bidirectional Excitation Controller

2021 ◽  
Vol 256 ◽  
pp. 01006
Author(s):  
Shao Xucai ◽  
Zhao Jinghong ◽  
Chen Hansi ◽  
Zhou Yinping ◽  
Mao Yinhao
Keyword(s):  
Prediction Model ◽  
Electromagnetic Interference ◽  
Path Model ◽  
Propagation Path ◽  
Ansys Software ◽  
Weak Current ◽  
Test Platform ◽  
Interference Test ◽  
Working Principle ◽  
Bidirectional Excitation

Bidirectional excitation controller is used in the excitation system of brushed DC motor. There are many monitoring sensors and weak current switches nearby. Therefore, it is necessary to study the conduction interference of the excitation controller. Firstly, based on the working principle of bidirectional excitation controller, the propagation path model and corresponding equivalent circuit of bidirectional excitation controller are established. Then, the parasitic capacitance parameters between the switch tube and the heat sink were extracted by ANSYS Q3D software, and the dynamic model of IGBT was established by using ANSYS Simplorer software. Based on ANSYS software, the prediction model of the equipment conducted electromagnetic interference was obtained. Finally an excitation controller conducting interference test platform was built, and the predicted results were compared with the measured interference results of the experimental platform to verify the accuracy of the prediction model.

Anti-interference Test for the New SEP Instrument: CSAMT Study at Dongguashan Copper Mine, China

2017 ◽  
Vol 22 (4) ◽  
pp. 339-352
Author(s):  
Da Lei ◽  
Qing-yun Di ◽  
Jun-jie Wu ◽  
Xing-chun Wang ◽  
Yun-xiang Liu ◽  
...  
Keyword(s):  
Electromagnetic Interference ◽  
Signal To Noise Ratio ◽  
Field Work ◽  
Noisy Environment ◽  
Quality Of Data ◽  
Copper Mine ◽  
Filter Methods ◽  
Temporal Filter ◽  
Interference Test

In this paper, an independently developed device system called Surface Electromagnetic Prospecting (SEP) system was introduced through a CSAMT test at Dongguashan copper mine, east of Tonglin, Anhui province. In this area exists a strong electromagnetic interference including mineral and other human interferences, so there is a big challenge for electromagnetic exploration field work. In order to test the anti-interference ability of our system and ensure the quality of data, we applied both spectral analysis and temporal filter methods to improve the signal-to-noise ratio. After data processing, we obtained better results in our geophysical models and showed that the SEP system is able to obtain stable and reliable data in a complex and noisy environment. Consequently, the anti-interference capability of the SEP system is capable to undertake complicated exploration tasks.

Combined ionizing radiation & electromagnetic interference test procedure to achieve reliable integrated circuits

2019 ◽  
Vol 100-101 ◽  
pp. 113341
Author(s):  
Roger Goerl ◽  
Paulo Villa ◽  
Fabian L. Vargas ◽  
César A. Marcon ◽  
Nilberto H. Medina ◽  
...  
Keyword(s):  
Ionizing Radiation ◽  
Integrated Circuits ◽  
Electromagnetic Interference ◽  
Test Procedure ◽  
Interference Test

Modal Analysis of Maglev Linear Feed Unit

2012 ◽  
Vol 150 ◽  
pp. 205-210 ◽  
Author(s):  
Long Xue Xiao ◽  
Guo Qing Wu ◽  
Xu Dong Zhang
Keyword(s):  
Modal Analysis ◽  
Natural Frequency ◽  
Machine Tools ◽  
Electromagnetic Levitation ◽  
Milling Machine ◽  
Ansys Software ◽  
Solid Foundation ◽  
Working Principle ◽  
Stiffness And Damping ◽  
Feed Unit

The structural and working principle of a kind of maglev linear feed unit for CNC engraving and milling machine tools are presented, and its mathematical model is analyzed, then its model of vibration is established in this paper. The modal analysis is made, the natural frequency is calculated with its vibration models, and the influence on the natural frequency of electromagnetic levitation bearing unit, which is caused by stiffness and damping coefficients of electromagnetic levitation bearing, is analyzed respectively by means of ANSYS software. The calculation and analysis presented in this paper can help us design the structure of the maglev linear feed unit for CNC engraving and milling machine tools, and can also establish a solid foundation for further etailed dynamics analysis.

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