Automatic Identification of Control Parameters in Stance Posture Control System.
Makoto Kikuchi, Masatake SHIRAISHI · TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C · 2000
This paper reports on a method of identifying some macro parameters in the control system of human dynamics. In particular we focused our attention on disturbance in the center of gravity in human stance posture control system as the research theme. In the first seep, we constructed a system to measure the human's sway of center of gravity. A subject stands on one foot according to the indication of a display unit and the sway of center of gravity is measured two-dimensionally. The Characteristics of stance posture control system were then identified using the lateral sway of center of gravity and input signal. In the second step, a mathematical model for stance posture control system by considering the human internal construction. Finally was proposed some control parameters of human inside condition were estimated by comparing with the characteristics and mathematical model obtained from the system identification. The result indicated that we can indirectly obtain a dead time, and several feedback coefficients in the posture control system.