This is the experimental work concerned with the optimal servo-mechanism in which the future value of desired function is utilized. The future value of the desired function means the time function of the desired signal over some interval subsequent to each present time. The time function generated by serially connected 10 delay equipments can be used for the experimental studies of this class of the optimal servomechanism. The output of each equipment is the time function of the input with a time delay of Δt_f. The output of the final delay equipment is used as the fictitious present value of the desired function. Then, the output signals of the remaining delay equipment can be regarded as the future values of the desired function with respect to the fictitious present value mentioned above.
The experimental results for various kind of desired function have revealed that the optimal servo-system of this class is much superior in tracking property to any other conventional servo-system.