Manual control to change over state of system by touch operation

Abstract

This paper intends to investigate manual control to change over the state of the system by touch operation. Compared the result of the experiments by touch operation with that by ON/OFF manipulation switch, it was obtained that it is difficult for subjects to adjust the controlled quantity in detail. So subjects group which has no experiences at control tasks by ON/OFF manipulation switch controls the system by rhythmic operation; that is, to change over the ON/OFF state of the switch indicated on CRT display according to a rhythm. In case of control by the rhythmic operation, subjects can decide to operate the switch by observing the trace of the controlled quantity after last change over the ON state of the switch. Therefore, even when the automatic control system is failed, or operator has not enough skill, if operator performs the rhythmic operation, one can easily predict the controlled quantity. From these results, we proposed the rhythmic operation as the one step to keep the desirable system-condition.