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In-process detection of torque on a drill using magnetostrictive effect

Ichiro Sasada, K. Toda, N. Suzuki, 1994 .

Control of cutting torque in the drilling process using disturbance observer

Shigeyasu Kawaji, Nobutomo Matsunaga, Teruyuki Maeda, 1995, Proceedings of 1995 American Control Conference - ACC'95.