Article Details

Abstract

The automatic control system of the printing press takes the industrial computer as the core, and controls the working state of printing machinery through precise control of motor operation. It has the functions of constant tension and automatic color matching, and is a complex automatic system. Since the system operates in an environment where high-voltage and low-voltage power coexist, minimizing Electromagnetic Interference (EMI) impact on the control system and ensuring stable operation are of paramount importance. This paper proposes specific EMI reduction methods from six aspects of control cabinet layout, wiring, grounding, shielding, filtering, and isolation. These methods have been applied in practical engineering projects, achieving remarkable results.

Keywords

Electromagnetic Interference; layout; wiring; grounding; shielding; filtering; isolation

References

1. [1] He Cheng Design of Label Printing Machine Control System Based on Data Bus [J]. Journal of Kunming University of Science and Technology: Natural Science Edition, 2011, 36 (4): 43-46
2. [2] Zhang Xiaolin, Ma Hongjiang Electromagnetic interference in DC/DC power supply and its countermeasures [J]. Microelectronics, 2004 (2): 110-115
3. [3] Chen Xuewen, Wang Yibo, Ke Changyan Research on Electromagnetic Interference of Angle Jump in Servo Transmission System [J]. Micro Special Motor, 2024, 52 (3): 60-64
4. [4] Yang Yang, Zhu Feng Electromagnetic interference analysis of rail pressure sensor based on capacitive coupling [J]. Journal of Instrumentation, 2024, 45 (4): 317-324
5. [5] Zhang Xiang, Fan Lijun, Chen Guan, etc Research on Grounding Grid Magnetic Field Diagnosis Taking into Account Electromagnetic Interference [J]. Journal of Electric Power Science and Technology, 2023, 38 (3): 174-181
6. [6] Ma Hong, Zhang Xiaoyang Research on Electromagnetic Modeling Correction and Shielding Grounding Design of Load Cable Based on Electromagnetic Compatibility Estimation [J]. Electronic Devices, 2021, 44 (6): 1369-1374
7. [7] Hao Mingyuan, Fu Zhenliang, Wang Xinghua, etc Research on the Grounding System of Subway Vehicles [J]. Locomotive Electric Transmission, 2020 (6): 132-136
8. [8] Gong Zhanxia Selective anti-interference control technology for ship electrical equipment based on big data [J]. Ship Science and Technology, 2024, 46 (7): 167-170
9. [9] Tang Guoyong Research on Electromagnetic Interference Suppression Methods for Power Lines Based on EMI Filters [J]. Electronic Manufacturing, 2025, 33 (2): 102-104
10. [10] Li Fang, Wei Qingsong, Zhuang Yonghe Technical study on isolation parameters of a magnetic isolation amplifier [J]. China Testing, 2022, 48 (S1): 118-121

About the authors

Xiong Yingfang (1983-), female, Han ethnicity, from Wuhan, Hubei, electrical design engineer, bachelor's degree, research interests include electrical design of industrial automation control systems.