Journal of The Society of Instrument and Control Engineers
Online ISSN : 1883-8170
Print ISSN : 0453-4662
ISSN-L : 0453-4662
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Volume 6, Issue 4
Displaying 1-7 of 7 articles from this issue
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  • AC-RMS-voltage to DC-voltage Converter, Utilizing Diode Function Generators
    Seiichi ISHIBASHI, Shimpei YAMAMOTO, Tahei YAMAGUCHI
    1967 Volume 6 Issue 4 Pages 225-235
    Published: April 10, 1967
    Released on J-STAGE: November 26, 2009
    DOIhttps://doi.org/10.11499/sicejl1962.6.225
    JOURNAL FREE ACCESS
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    Regarding the conversion from AC-RMS-voltage to DC-voltage, its necessity and the various methods hitherto published in the literature are briefly introduced before describing in detail the converter, developed by authors.
    This converter consists of the following parts: (a) an auxiliary PT, (b) a transistor synchronous rectifying circuit, (c) a squaring circuit composed of a transistor differential amplifier and a diode function generator with the square root characteristics, (d) an averaging circuit (RC low-pass filter), (e) a square-root extracting circuit utilizing a diode function generator and (f) a transistor differential amplifier.
    This converter is able to accurately measure RMS-voltage and produces a linear output. The output DC-voltage of 0-5volts corresponds to the input AC-RMS-voltage of 70-140 or 90-120 volts. The performance of this converter may be rated as class 0.5 of an indicating AC voltmeter. Futher more this converter is protected well against abnormal phenomena, which might occur in the power line.
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  • The Electrically Controlled Hand Prosthesis Using Command Disk and/or EMG
    Ichiro KATO, Eizo OKAZAKI, Hiroshi NAKAMURA
    1967 Volume 6 Issue 4 Pages 236-241
    Published: April 10, 1967
    Released on J-STAGE: November 26, 2009
    DOIhttps://doi.org/10.11499/sicejl1962.6.236
    JOURNAL FREE ACCESS
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    Recently, the artificial hand has been studied and developed for the various purposes. One of them is hand prosthesis. There are many important problems in hand prosthesis. In developing an artificial hand, points to be remarked are the mechanism, the driving method, the driving circuit and the way to make it small and light.
    Imitating the shape and function of a human hand, we made a prototype model in order to clarify the problems of practical use.
    First merit of this phototype is having the possibility of operation by two different commands. One command uses a command disk. By turning the disk, the artificial hand repeats the predeturmind sequence of operation. The other command uses the EMG from the human hand.
    Second merit is in its function. The five fingers and the wrist move independently, so that it can perform complicated actions that are similar those performed by a human hand.
    Finally, the problems with this prototype model are taken up suggesting the countermeasures and making a prospect of future.
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  • Present Status of Radiation Standards
    Osamu YURA
    1967 Volume 6 Issue 4 Pages 242-252
    Published: April 10, 1967
    Released on J-STAGE: November 26, 2009
    DOIhttps://doi.org/10.11499/sicejl1962.6.242
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  • Power Conversion and Control Using Thyristors
    Eiichi OHNO
    1967 Volume 6 Issue 4 Pages 253-265
    Published: April 10, 1967
    Released on J-STAGE: November 26, 2009
    DOIhttps://doi.org/10.11499/sicejl1962.6.253
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  • Statistical Estimation of Process Dynamics
    Yoichi KAYA
    1967 Volume 6 Issue 4 Pages 266-279
    Published: April 10, 1967
    Released on J-STAGE: November 26, 2009
    DOIhttps://doi.org/10.11499/sicejl1962.6.266
    JOURNAL FREE ACCESS
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  • New Integrating Digital Voltmeter
    Takashi SUGIYAMA
    1967 Volume 6 Issue 4 Pages 280-287
    Published: April 10, 1967
    Released on J-STAGE: November 26, 2009
    DOIhttps://doi.org/10.11499/sicejl1962.6.280
    JOURNAL FREE ACCESS
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  • Flying Micrometer
    [in Japanese]
    1967 Volume 6 Issue 4 Pages 291-292
    Published: April 10, 1967
    Released on J-STAGE: November 26, 2009
    DOIhttps://doi.org/10.11499/sicejl1962.6.291
    JOURNAL FREE ACCESS
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