Abstract
In this study two kinds of man-machine systems are used; one of which has a mechanical part consisting of a rotary chair, an electric motor and an amplifier etc., and gives both visual and body sensory informations to a human controller, the other has an analog simulator which has the same characteristics as the mechanical part of the former, but gives only visual information to the human controller. The controller's behavior is investigated for sudden changes of the gain constant of the controlled element in each system. The experimental results are as follows: (1) The body sensory information is most effective in adaptation process when the system gain changes. (2) A human controller detects the gain change more frequently and adapts more rapidly in the case that the body sensory information is available than in the case that only visual information is given. (3) The body sensory information have an effect especially on the detection process.
