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Jun Gao(고준),J.H. Choi(최종현),Y.S. Kueon(권영섭),Y.S. Baek(백윤수) 대한기계학회 2009 대한기계학회 춘추학술대회 Vol.2009 No.11
Hydraulic actuators are normally used in the systems requiring a large amount of motive force. However, when the system requires high frequency and fast response, it is hard to control the actuator which is shown to have low mechanical performance. Therefore direct-driven electromagnetic linear actuator system is demanded. This paper deals with a linear motor system which is replaced to achieve direct linear motion. The modeling has been done with Finite Element(FE) Analysis and two prototypes have been designed and fabricated. They are designed with moving-coil and moving-magnet type. Halbach array is used on the second type to reduce detent force. In this study, FE analytical results are validated by experiments. The results show that thrust force is about 6,000N and detent force is reduced to approximately 35N. The linear motor system presented in the work can be used for other devices, just like machine-tool sliding tables, continuous casters and so on.