- ISSN 0258-2724
- CN 51-1277/U
- EI Compendex
- Scopus
- Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
- Chinese S&T Journal Citation Reports
- Chinese Science Citation Database
| Citation: | XU Chengcheng, XU Fangchao, SUN Feng, ZHANG Xiaoyou, JIN Junjie, LUAN Boran. Micro-positioning Control of Magnetic Actuator for Electrical Discharge Machining[J]. Journal of Southwest Jiaotong University, 2022, 57(3): 610-617. doi: 10.3969/j.issn.0258-2724.20210987
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For timely controlling the gap between poles in electrical discharge machining (EDM), a single-degree-of-freedom magnetic actuator is designed with merits of high precision, fast response, wide frequency band and long stroke. As the local actuator in EDM, it is optimized by a fuzzy PID control method that modify the control parameters online and in real time. Firstly, the dynamic model of the magnetic actuator device is analyzed, and the transformation relationship is built between the coil current and the mover displacement in the magnetic actuator. Secondly, a conventional PID controller is designed according to the characteristics of the magnetic actuator device, and fuzzy control is introduced to optimize the performance of micro-positioning control. Finally, the controller performance is verified by the micro-positioning simulation and experiment on the magnetic actuator. Simulation and experimental results show that the magnetic actuator has a micron-level positioning resolution, a wide frequency band greater than 50 Hz, and a positioning stroke of 2 mm, which fully meets the fine-tuning requirements of EDM.
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