-
Article type: Cover
2008 Volume 52 Issue 199 Pages
Cover1-
Published: December 10, 2008
Released on J-STAGE: November 09, 2017
JOURNAL
FREE ACCESS
-
Article type: Cover
2008 Volume 52 Issue 199 Pages
Cover2-
Published: December 10, 2008
Released on J-STAGE: November 09, 2017
JOURNAL
FREE ACCESS
-
Tomoo KASUO, Takashi SANO
Article type: Article
2008 Volume 52 Issue 199 Pages
1-5
Published: December 10, 2008
Released on J-STAGE: November 09, 2017
JOURNAL
FREE ACCESS
We developed a radio-controlled watch "Multi-Band six Atomic Solar" . It automatically calibrates to the correct time by receiving time signals from the radio transmission stations in the US, UK, Germany, Japan (JJY40, JJY60) and in China. To solve the technical problem of increasing the receiving stations, we developed a new system which consists of a CMOS reception IC.
View full abstract
-
Takehiro Sato, Naoki Kanaoka, Nobuhiro Tsuda, Atsushi Okuyama
Article type: Article
2008 Volume 52 Issue 199 Pages
6-16
Published: December 10, 2008
Released on J-STAGE: November 09, 2017
JOURNAL
FREE ACCESS
We develop a small NC milling machine based on the concept of a micro factory. We try to manufacture this machine for using even in the laboratory where there are lot of amateur machine operators for getting trial machine parts. The small NC milling machine size is about 150mm×100mm×270mm. It is about 1/10 of the general milling machines. To evaluate this machine's performances we first make square parts:5mm×5mm×2mm and we make sure that this square parts accuracy is kept within 0. 01mm. We also make one of typical machine parts : a gear, and a circular pyramidal shape which is called a 2. 5 dimensional sample.
View full abstract
-
Takayuki HASUMI, Haruhiko HIGUCHI
Article type: Article
2008 Volume 52 Issue 199 Pages
17-26
Published: December 10, 2008
Released on J-STAGE: November 09, 2017
JOURNAL
FREE ACCESS
We put global radio time signal "Cal.U600" on the market in June, 2007. The performance of the high sensitivity that can be the electric wave reception in the North America continent is installed in this watch. "Cal.U600" is achieved operativeness and the visibility by installing of the combinations display, the winding stem and the pushbuttons. This wristwatch has the function that is called "Impact detection function". This function puts the electromagnetic brake on the motor when the impact is detected. As a result, it has the display means of high reliability to the impact in this wristwatch. Moreover, the sensor is not needed because the impact has been detected with the stepping motor.
View full abstract
-
Susumu TARAO, Toshihiko KOIWA
Article type: Article
2008 Volume 52 Issue 199 Pages
27-35
Published: December 10, 2008
Released on J-STAGE: November 09, 2017
JOURNAL
FREE ACCESS
A new kind of motion base is proposed for the purpose of setting up a user-friendly interaction system on the desktop. It aims at motion in various situations with a large range of movement using a simple mechanism, and generating motions adequate for an interaction with a man and for computer application. In this paper, a prototype of the motion base is developed. Its mechanism consists of a combination of a wheel drive locomotion mechanism and a 3-degrees of freedom (DOF) parallel link mechanism in parallel. It is aimed at generating 3 DOF translational motion on the desktop with a simple mechanism as a whole and with a large range of movement, especially in the horizontal direction. In consideration of application for man-computer interaction, the prototype is controlled by a microprocessor, a microcontroller and FPGA. This paper presents a description of the concept of the motion base for a desktop interaction system, the prototype mechanism, the control system and the preliminary experiment which demonstrates typical translational motions.
View full abstract
-
Tatsuo NARABAYASHI, Shinya KURAMOTO, Akio ISHIZAKA, Koichi OZAKI, Sato ...
Article type: Article
2008 Volume 52 Issue 199 Pages
36-46
Published: December 10, 2008
Released on J-STAGE: November 09, 2017
JOURNAL
FREE ACCESS
The collisions of elastic bar and elastic beam are treated analytically. It is already known that the collision phenomena of bar and beam will constitute form from only one time collision pattern to two or more intermittent type of collision patterns. However, these patterns are determined by the following three principal parameters when an elastic bar collides with a both-ends supported elastic beam. Thus, they are 1) mass ratio, 2) natural-frequency ratio in the first-order mode, and 3) collision position ratio. In this paper, it was studied analytically how the three above-mentioned parameters would affect the number of times of a collision, the peak value of impact force (The 1st impact force), and a coefficient of restitution.
View full abstract
-
Yasuhiro KAWAHARA, Shunsuke KOBAYASHI, Naoaki YOKOI, Hiroshi HOSAKA
Article type: Article
2008 Volume 52 Issue 199 Pages
47-57
Published: December 10, 2008
Released on J-STAGE: November 09, 2017
JOURNAL
FREE ACCESS
A radio positioning and seeking method which uses a PHS was devised to achieve a low-cost and accurate positioning system for logistics. Since the PHS positioning error is several hundred meters, it cannot be used to find lost transport objects. In this method, a PHS terminal is identified and its position is searched by a directional antenna after its rough position is located using PHS positioning method. The receivable area of PHS terminal's signal is wider than the PHS positioning error range. As a result, the terminal's position can be measured and is retrieved without PHS positioning error range in the PHS communication area.
View full abstract
-
Jun SHINOHARA, Makoto SUZUKI, Masao KASUGA, Yuji FURUKAWA, Terunao HIR ...
Article type: Article
2008 Volume 52 Issue 199 Pages
58-61
Published: December 10, 2008
Released on J-STAGE: November 09, 2017
JOURNAL
FREE ACCESS
We have developed the new type, very small ultrasonic micromotor, 0.95mm in diameter. This motor consists essential of metal wire as a stator and a cylindrical rotor. This metal wire is used as a waveguide to propagate ultrasonic waves from external ultrasonic oscillator to a coiled stator provided at the tip, and a cylindrical rotor in contact with this coiled stator is rotated by the ultrasonic vibration of metal wire. This motor can become easily small size as it has a simpler structure than conventional motors and required fewer parts.
View full abstract
-
[in Japanese]
Article type: Article
2008 Volume 52 Issue 199 Pages
62-66
Published: December 10, 2008
Released on J-STAGE: November 09, 2017
JOURNAL
FREE ACCESS
-
[in Japanese]
Article type: Article
2008 Volume 52 Issue 199 Pages
67-72
Published: December 10, 2008
Released on J-STAGE: November 09, 2017
JOURNAL
FREE ACCESS
-
[in Japanese]
Article type: Article
2008 Volume 52 Issue 199 Pages
73-76
Published: December 10, 2008
Released on J-STAGE: November 09, 2017
JOURNAL
FREE ACCESS
-
Takeshi IKEGAMI
Article type: Article
2008 Volume 52 Issue 199 Pages
77-91
Published: December 10, 2008
Released on J-STAGE: November 09, 2017
JOURNAL
FREE ACCESS
-
[Author not found]
Article type: Article
2008 Volume 52 Issue 199 Pages
92-98
Published: December 10, 2008
Released on J-STAGE: November 09, 2017
JOURNAL
FREE ACCESS
-
[in Japanese]
Article type: Article
2008 Volume 52 Issue 199 Pages
99-100
Published: December 10, 2008
Released on J-STAGE: November 09, 2017
JOURNAL
FREE ACCESS
-
[in Japanese]
Article type: Article
2008 Volume 52 Issue 199 Pages
101-102
Published: December 10, 2008
Released on J-STAGE: November 09, 2017
JOURNAL
FREE ACCESS
-
[in Japanese]
Article type: Article
2008 Volume 52 Issue 199 Pages
103-104
Published: December 10, 2008
Released on J-STAGE: November 09, 2017
JOURNAL
FREE ACCESS
-
Article type: Appendix
2008 Volume 52 Issue 199 Pages
113-
Published: December 10, 2008
Released on J-STAGE: November 09, 2017
JOURNAL
FREE ACCESS