ON TRACKING BEHAVIORS OF THE HUMAN OPERATOR IN PREVIEW CONTROL SYSTEMS

Abstract

This paper considers the experimental results for tracking behaviors of human operators in preview control systems and, on the basis of the experimental results, proposes a model which can be viewed as the cascade connection of the convolution integral that processes the future input and the closed‐loop system modelled by the crossover model. The measured closed‐loop frequency characteristics and the analytical model demonstrate the following facts. 1) The human operator mainly improves the closed‐loop phase characteristics by using preview input information, while the closed‐loop amplitude characteristics are hardly improved. 2) The preview weighting function in processing the future input has a peak near 0.25 sec ahead and comes to very small values in the range beyond 0.5 sec ahead. 3) The future value beyond 0.5 sec ahead is of little value for improving the tracking characteristics when the controlled elements are K and Kc/s. But when the controlled element is Kc/s2, the required preview time is 0.75 sec.

Citation

ITO, K. and ITO, M. (1975), "ON TRACKING BEHAVIORS OF THE HUMAN OPERATOR IN PREVIEW CONTROL SYSTEMS", Kybernetes, Vol. 4 No. 1, pp. 33-38. https://doi.org/10.1108/eb005380