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김진수(J. S. Kim),이훈구(H. G. Lee),남시복(S. B. Nam),마석범(S. B. Ma) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.10
We use electric drill for cutting wood. In electric drills, there is the core-drill that bores concrete-wall. The core-drill is used in construction or remodeling areas. Therefore we require safety in working with the core-drill. In this paper, new controller of core-drill for concrete-wall is proposed. Experimental results show the validity of the proposed controller.