Abstract
This paper deals with the human operator's learning process on a manual tracking control system, from the relation between the grasp of the reference signal and the change of the control operation, by the repeat of the trial. The reference signal was divided from the point whose velocity or acceleration indicated zero. On each region of the divided reference signal, the change tendencies of the performance score were examined. As a result, in the reference regions having the characteristic shape of the time series, it was observed that the performance score decreased as the exponential function, and that the control performance improved in both directions of the time axis. From the analysis of the control operation, it was shown that the changes of the control operation shape were related to the reinforcement of the grasp of the reference signal. Therefore, it was supposed that the improvements of the control performance in the opposite direction and orderly one of the time axis were caused by the precognitive control behavior and the developing of the grasp of the reference signal, respectively. It was suggested that the characteristic shape in the reference signal had the possibility to become one factor that participated in the forming of the human operator's learning characteristics.
