Design and Control for Faster Robots. - Yoshitsugu Kamiya; Sakiichi Okabe; Yasuo Yokoyama (J. Robotics Mechatronics, 1989)

On-Line Recognition of Robot Operation by Using a Vibration Analysis. - Yoshitsugu Kamiya; Sakiichi Okabe; Yasuo Yokoyama; Touru Kobayashi (J. Robotics Mechatronics, 1989)

Optimum Design Method for Sub-Reed of an Ultrasonic Motor. - Seiji Aoyagi; Yoshitugu Kamiya; Sakiichi Okabe (J. Robotics Mechatronics, 1991)

Study on the Sheet Escape and Feeding Mechanism Using Ultrasonic Vibration (1st Report) - Design Concept and Its Experimental Investigation -. - Sakiichi Okabe; Yoshitugu Kamiya; Takahiro Oda (J. Robotics Mechatronics, 1993)