The Japanese Journal of Ergonomics
Online ISSN : 1884-2844
Print ISSN : 0549-4974
ISSN-L : 0549-4974
Search
Advanced search
OR
Browse
Search
Volume 13, Issue 3
Displaying 1-8 of 8 articles from this issue
Show all abstracts
    • |<
    • <
    • 1
    • >
    • >|
  • An experimental study of the human adaptability for a control system with variable parameter dynamics
    Shiro HATA, Harumi TAKEDA
    1977 Volume 13 Issue 3 Pages 81-89
    Published: June 15, 1977
    Released on J-STAGE: March 11, 2010
    DOIhttps://doi.org/10.5100/jje.13.81
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    In this paper, the human operator's adaptability to the change of either gain constant K or time constant T is experimentally investigated for a compensatory manual control system, in which controlled element either K/s or 4/(1+Ts) is included. Two kinds of changes of the system parameter K or T are dealt with here, those are (1) ramp change and (2) sudden change.
    Concerning the case (1), in time domain, on the assumption that the human operator controls the system estimating the value of K or T, those estimated values are computed under a certain assumption. Moreover, the remnant component contained in his control is investigated in frequency domain. Concerning the case (2), a measurement method which offers the adaptive time more exactly than the conventional is proposed, and using this method, the relations between the adaptive time, the detection time, etc., and the changing ratio of K or T before and after the sudden change are examined. Furthermore, the detection frequency to the parameter change is also experimentally obtained. And then, the adaptive process of the human operator is interpreted through those results.
    View full abstract
    Download PDF (1005K)
  • Rate and acceleration patterns of linear hand movements
    Basic studies of smoothing machine motion
    Koichi OGAWA, Masahiro MORI
    1977 Volume 13 Issue 3 Pages 91-98
    Published: June 15, 1977
    Released on J-STAGE: March 11, 2010
    DOIhttps://doi.org/10.5100/jje.13.91
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    The present study represents an attempt to obtain smooth response patterns for one dimensional hand movements, as an example of cybernetic motion of which smooth and soft movement is peculiar of living creatures.
    The patterns have been sought as a step toward building a factual basis for appling the smooth movement to machine motions. The study was designed to analyze quick motions of different extents and carrying weights in terms of rate and acceleration of time. The response patterns were classified roughly into three types A, B and F, and agreed with the physical, psychological and control system points of view.
    The smooth movements often observed when positioning accuracy of the hand movement was required.
    View full abstract
    Download PDF (947K)
  • Investigation of pedestrain flow characteristics by simulation studies
    Kazuo NAKAMURA, Matsutaro YOSHIOKA
    1977 Volume 13 Issue 3 Pages 99-107
    Published: June 15, 1977
    Released on J-STAGE: March 11, 2010
    DOIhttps://doi.org/10.5100/jje.13.99
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    Planning of pedestrian facilities in public spaces has been made mainly to maximize pedestrian flow volume. However analysis of flow characteristics has been insufficient, and present design procedures are lacking in considering safety and comfort for pedestrians. In this report, flow rate characteristics of pedestrian movement under the sqeezing, combining and branching conditions are quantitatvely investigated by simulation studies. Concerning human safety and comfort, methods to quantify constraint characteristics on pedestrian spacing and velocity are proposed. Constraint grades are investigated for some examples of simulation flows using the models.
    View full abstract
    Download PDF (3444K)
  • [title in Japanese]
    Masamitsu OSHIMA
    1977 Volume 13 Issue 3 Pages 108-110
    Published: June 15, 1977
    Released on J-STAGE: March 11, 2010
    DOIhttps://doi.org/10.5100/jje.13.108
    JOURNAL FREE ACCESS
    Download PDF (312K)
  • [title in Japanese]
    [in Japanese]
    1977 Volume 13 Issue 3 Pages 110-113
    Published: June 15, 1977
    Released on J-STAGE: March 11, 2010
    DOIhttps://doi.org/10.5100/jje.13.110
    JOURNAL FREE ACCESS
    Download PDF (446K)
  • [title in Japanese]
    [in Japanese]
    1977 Volume 13 Issue 3 Pages 113-116
    Published: June 15, 1977
    Released on J-STAGE: March 11, 2010
    DOIhttps://doi.org/10.5100/jje.13.113
    JOURNAL FREE ACCESS
    Download PDF (566K)
  • [title in Japanese]
    [in Japanese]
    1977 Volume 13 Issue 3 Pages 116-120
    Published: June 15, 1977
    Released on J-STAGE: March 11, 2010
    DOIhttps://doi.org/10.5100/jje.13.116
    JOURNAL FREE ACCESS
    Download PDF (655K)
  • Man-system on visual inspection of measurement method
    Hiroshi YANO
    1977 Volume 13 Issue 3 Pages 121-126
    Published: June 15, 1977
    Released on J-STAGE: March 11, 2010
    DOIhttps://doi.org/10.5100/jje.13.121
    JOURNAL FREE ACCESS
    Download PDF (757K)
    • |<
    • <
    • 1
    • >
    • >|
feedback
 Top