Characteristics of Manual Control

In Conection withe the recent wide applications of automatic control, the manual control done with our eyes and hands also may be taken as a "Closed-cycle" servomechanism, or a feed back device through human nerves.On this view point, the author made several studies by experimantal and also analytical means. Both results came in a good accordance with each other. Hence, the mathematical analysis seems to be applicable even to the control cone through human nerves. Moreover, we may say that the results of manual control which contains various drawbacks such as inertia, friction of handle, etc. may be well depended upon.And also, the term v(t) appearing in this paper may be regarded as indicating human "indicial admittance". Therefore, if we get the said term in the form of curves for individual cases, it will offer the means for the psychological measurements