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Volume 9 (1973)
- Issue 6 Pages 235-
- Issue 5 Pages 187-
- Issue 4 Pages 143-
- Issue 3 Pages 83-
- Issue 2 Pages 41-
- Issue 1 Pages 2-
Volume 9, Issue 2
Displaying 1-5 of 5 articles from this issue
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H. Akashi1973 Volume 9 Issue 2 Pages 41-48
Published: April 15, 1973
Released on J-STAGE: March 11, 2010
JOURNAL FREE ACCESSA survey is made of the recent researches on the characteristics of human operator in control tasks in man-machine systems. Several papers are of special interest from the control-theoretical point of view. They were briefly reviewed.View full abstractDownload PDF (771K) -
S. Hata, T. Tsumura1973 Volume 9 Issue 2 Pages 49-57
Published: April 15, 1973
Released on J-STAGE: March 11, 2010
JOURNAL FREE ACCESSThis paper is concerned with the man-machine system where a human operator on a rotary chair performs compensatory tracking of the chair on both visual and body sensory informations. The machine system is consist of a rotary chair, a motor, an amplifier, and potentiomers etc. and has a second order linear transfer function.
From the experimental results drawn the following inferences. (1) Visual information mainly governs the compensating operation of human when both visual and body sensory informations are available. (2) When compensating tracking by human is performed on only visual information, no significant differences on Bode diagram by individual human operators are shown. (3) When compensating operation of human is performed on only body sensory informations, the differences of individual operators are remarkable.
A human operator model for this man-machine system is synthesized through some modification of the traditional P-I-D mode transfer function. The block diagram of the human operator model is drawn on the principle that both visual and body sensory informationpaths are exist, and the Bode diagram of resultant transfer function of human model well approximates that of by human operator.View full abstractDownload PDF (937K) -
H. Taguchi, K. Fujii1973 Volume 9 Issue 2 Pages 59-70
Published: April 15, 1973
Released on J-STAGE: March 11, 2010
JOURNAL FREE ACCESSIn manual tracking task with a linear control wheel, human tracking processes could be distinguished into two different control mode, a bang-bang and gradual mode. This paper discusses a bang-bang control mode, and proposes a model to explain human adaptation in this mode. When human operator finds that some lead compensation is necessary for good tracking, the tendency of a bang-bang mode is observed remarkably.
His bang-bang switching motion is characterized by the predictive manoeuvre lines in the phase plane between the plant output and the rate: Namely, his control reversals turn up whenever the predictive line crosses a target position in the phase plane. The proposed model is based on this control law. Digital simulation results of the model show close agreements with experimental results obtained by human operators.View full abstractDownload PDF (1209K) -
T. Hashimoto, H. Akashi, K. Hara1973 Volume 9 Issue 2 Pages 71-77
Published: April 15, 1973
Released on J-STAGE: March 11, 2010
JOURNAL FREE ACCESSThe purpose of the present paper is to investigate the effectiveness of the optimal switching line as preview information, in the time-optimal, on-off manual control system provided with the optimal switching line, and to analyze the operator's control characteristics in this “preview control system”.
The results are summarized as follows.
(1) The optimal value of the manipulated variable which minimizes the settling time exists whether the optimal switching line is informed previously or not.
(2) The experimental settling time in the preview control system is nearly equal to the theoretical settling time.
(3) Human operator is apt to switch the manipulated variable before the state reaches the optimal switching time, if the optimal switching line is not informed previously.
(4) The individual variations in the settling time are quite small in this preview control system.View full abstractDownload PDF (2195K) -
H. Furusho1973 Volume 9 Issue 2 Pages 78-80
Published: April 15, 1973
Released on J-STAGE: March 11, 2010
JOURNAL FREE ACCESSThe author supposed that the response function between steering force and steering angle showed the dynamic characteristics of driver's arm. The characteristic values are measured under various conditions, such as the stability of vehicle, the intensity of wind gust disturbance, the field of view and so on. From the degree of driver's strain, judgement has been done whether the characteristics of the car suits the human being or not.
Summarizing the results, in the case of over-steer characteristics the steering frequency becomes high, the number of steering is large is large and busy steering is obliged for the driver. Thus it can be judged thar a heavy burden is given to the driver. It can be concluded that the car with over-steer characteristics is not suitable for driving, for the shaking is violent and the deviation from the course is large. Therefore, the car with under-steer characteristics is recommended for driving.View full abstractDownload PDF (309K)
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