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Affiliation |
Graduate School of Engineering Science Department of Systems Design Engineering Mechanical Engineering Course |
NAGANAWA Akihiro
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Research Interests 【 display / non-display 】
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Control Engineering
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Medical Engineering
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Robotics
Graduating School 【 display / non-display 】
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-1992.03
Akita University Faculty of Mining Graduated
Graduate School 【 display / non-display 】
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-1995.03
Tohoku University Graduate School,Division of Engineering Doctor's Course Completed
Campus Career 【 display / non-display 】
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2016.04-Now
Akita University Graduate School of Engineering Science Department of Systems Design Engineering Mechanical Engineering Course Professor
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2011.04-2016.03
Akita University Graduate School of Engineering and Resource Science Department of Mechanical Engineering Professor
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2001.03-2011.03
Akita University Department of Mechanical Engineering Associate Professor
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1999.04-2001.02
Akita University Department of Mechanical Engineering Lecturer
Research Areas 【 display / non-display 】
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Life Science / Medical systems
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Informatics / Mechanics and mechatronics
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Informatics / Robotics and intelligent system
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Informatics / Mechanics and mechatronics
Research Achievements 【 display / non-display 】
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Shinji HOSOKAWA, Akihiro NAGANAWA, Takeshi SEKI, Kiyoshi OKA, Noriaki MANABE, Ken HARUMA, Junji YOSHINO
Advanced Biomedical Engineering 11 228 - 236 2022.11 [Refereed]
Research paper (journal) Domestic Co-author
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Development of a Robot for Automated Adhesive Interlining in Sewing Factories
Susa Mirai, Naganawa Akihiro, Takahashi Akito
The Japanese Journal of the Institute of Industrial Applications Engineers ( The Institute of Industrial Applications Engineers ) 8 ( 2 ) 147 - 153 2020.09 [Refereed]
Research paper (journal) Domestic Co-author
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Position Control of Ultrasonic Motor Based on Loop-gain Adjustment by Adaptive Algorithm
7 ( 2 ) 39 - 46 2019.09 [Refereed]
Research paper (journal) Domestic Co-author
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NAGANAWA Akihiro, SHIMADA Takuya, SAKURADA Akira, MORI Shigeki, ARAKAWA Ryo, ITO Ryo, ETOH Masato
Transactions of the Society of Instrument and Control Engineers ( The Society of Instrument and Control Engineers ) 54 ( 1 ) 84 - 90 2018.01 [Refereed]
Research paper (journal) Domestic Co-author
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Development of an Ultrasonic Motor Introducing a Curve-shaped Metallic Plate
Kazumi Komatsu, Akihiro Naganawa, Yoshinori Ueno, Emilia Abadjieva, Hisashi Ito
Universal Journal of Mechanical Engineering 5 ( 2 ) 47 - 51 2017.06 [Refereed]
Research paper (journal) Domestic Co-author
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Fundamental study on stabilization of ultrasonic atomization by Bolt-clamped Langevin-type Transducer
Arakawa Ryo, Mori Shigeki, Naganawa Akihiro, Shibuya Yotsugi, Obinata Goro
Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2019A ( 0 ) 322 - 323 2019.08
Research paper (research society, symposium materials, etc.)
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Evaluation method of hardness of vessel using balloon catheter
ITO Yuta, NAGANAWA Akihiro, KOMATSU Kazumi, SEKI Takeshi, HIRASAWA Fujiko, TAKAHASHI Masataka, SHIMIZU Hiroaki
The Proceedings of Autumn Conference of Tohoku Branch ( The Japan Society of Mechanical Engineers ) 2018.54 ( 0 ) 314 2018
Research paper (research society, symposium materials, etc.)
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Position Control of Ultrasonic Motor Based on Loop - Gain Adjustment by Adaptive Algorithm
Komatsu Kazumi, Naganawa Akihiro
The Japanese Journal of the Institute of Industrial Applications Engineers ( The Institute of Industrial Applications Engineers ) 7 ( 2 ) 39 - 46 2019
In the ultrasonic motors (USM), there are various driving principles such as a standing wave type, a traveling wave type, etc. Among them, the traveling wave type USM is applied in different devices at various situations, because its shape is like DC (direct current) motors. The control performance is reduction because of the dynamic characteristics of USM, which are greatly fluctuate, depending on the influence of nonlinearity via the friction, frictional heat caused by the driving principle, the magnitude of the load and driving conditions. Up to now, various control methods are proposed, and a lot of researches are conducted to control precision positioning, but a simple method to realize the high positioning performance is not proposed yet. In this research, it is offered a two-degrees-of-freedom control method. It introduces a simple adaptive algorithm which holds the loop gain as a constant value, assuming the steady-state gain is decreased as the reduction of the rotational speed of USM. The characteristic of this method is that the control performance can be compensated with only one gain adjustment. Its effectiveness is verified by experiment which uses USM.
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Komatsu Kazumi, Seki Takeshi, Naganawa Akihiro, Oka Kiyoshi, Nishimura Akihiko
Maintenology ( Japan Society of Maintenology ) 16 ( 3 ) 89 - 95 2017
In recent years, the inspection of pipes is being carried out by using inspection techniques which employ ultrasonic and eddy current testing, endoscope (CCD cameras or optical fiber). Currently, the inspection devices can be performed only a visual check of the pipes. In case of a damage, they cannot be repaired. In such case, the damaged portion has to be excluded or the pipe has to be replaced. The authors develop a laser processing head comprising an optical fiberscope. It is capable of inspection and repair of a pipe with a diameter of 25 mm. The pipes of such size are used in the heat exchanger of a fast breeder reactor. However, pipes with diameters smaller than 25 mm, require a sufficiently small laser processing head that can be inserted into them. The research aims to develop a laser processing head for the inspection and repairing of a pipe with 12 mm diameter. For this purpose, it is used a standing wave type ultrasonic actuator which is orthogonally positioned to the piezoelectric elements. This ultrasonic actuator is developed for implementation in the laser processing head, which is used in inspection and repair of the 12-mm-diameter pipe. In this study, the structure and results of the verification experiments are explained.
◆Original paper【 display / non-display 】
◆Research society, Symposium materials, etc.【 display / non-display 】
◆Other【 display / non-display 】
Grant-in-Aid for Scientific Research 【 display / non-display 】
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Grant-in-Aid for Scientific Research(C)
Project Year： 2019.04 - 2022.03
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Grant-in-Aid for Scientific Research(C)
Project Year： 2015.04 - 2018.03
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Grant-in-Aid for Scientific Research(C)
Project Year： 2012.04 - 2015.03
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Grant-in-Aid for Young Scientists(B)
Project Year： 2005.04 - 2007.03
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Grant-in-Aid for Scientific Research(B)
Project Year： 1999.04 - 2001.03
Presentations 【 display / non-display 】
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Study of ultrasonic motor with mechanism to increase the PZT displacement
Yutaro Hatanaka, Kazumi Komatsu, Emilia Abadjieva, Hisashi Ito, Akihiro Naganawa
2017 the International Conference on Robotics and Mechantronics (ICRoM 2017) 2017.12 - 2017.12
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Development of a miniature ultrasonic motor using a metallic plate
Kazumi Komatsu, Yutaro Hatanaka, Emilia Abadjieva, Hisashi Ito, Akihiro Naganawa
2017 the International Conference on Robotics and Mechatronics (ICRoM 2017) 2017.12 - 2017.12
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Development of Blinking Epithese
Mitsuaki Akagi, Kiyoshi Tanaka, Masayuki Fukuda, Akihiro Naganawa
2017 the International Conference on Robotics and Mechatronics (ICRoM 2017) 2017.12 - 2017.12
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Development of Ultrasonic Motors which combine a piezoelectric element with a curve-shaped metallic plate
Akihiro Naganawa, Emilia Abadjieva, Yoshinori Ueno, Kazumi Komatsu, Hisashi Ito, Valentin Abadjiev
13th National Congress Theoretical and Applied Mechanics (13thNCTAM) 2017.09 - 2017.09
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Assessment of small bowel motility in patients with small bowel obstruction: a newly developed measurement technique for monitoring small bowel motility by using an ileus tube
Noriaki Manabe, Akihiro Naganawa, Shinji Hosokawa, Kiyoshi Oka, Ken Haruma
Digestive Disease Week (DDW2017) 2017.05 - 2017.05
Academic Activity 【 display / non-display 】
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2018.04-2019.03
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2012.04-Now
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2011.04-2013.03
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2009.04-2012.03