TWO-DIMENSIONAL TRACKING WITH IDENTICAL AND DIFFERENT CONTROL DYNAMICS IN EACH COORDINATE

摘要

In many complex tracking devices, the control dynamics may differ in the various coordinates. This requires the operator to supply a different transfer function in each tracking dimension. The purpose of this investigation was to determine the effect upon tracking produced by using various pairings of position, rate, and acceleration control dynamics in the X and Y coordinates of a two-dimensional tracking system.nThe results indicate that in all cases, minimum error occurred when the dynamics in the two coordinates were the same and that error increased as the dissimilarity between the dynamics became greater. These findings are interpreted as suggesting that a human has a limited information-handling capacity, that some of this capacity is used to change from one task to another, and that the great¬er the difference between control tasks the less the capacity which remains for the performance of either.