Abstract
This paper presents a new interpretation of the human operator's compensation mechanism for time-delay in a compensatory manual control system in terms of the finite pole assignment. In the open-loop characteristics of the operator in some compensatory tracking tasks to a random step input, each gain curve has peaks at relatively high frequencies. This phenomenon can be explained as a feature caused by the finite pole assignment method which the operator uses implicitly in order to compensate his own time-delay because there are peaks in the open-loop gain curve of the system with time-delay to which the finite pole assignment method is applied. Hence, a state equation model representing operator's transient response to a step-like input is proposed from the viewpoint of the finite pole assignment. This model contains an observer estimating the state of a controlled object and predictor of time-delay.
