Design methodology for miniaturization of motor equipped in a fluid intermittent control system

This paper presents a design methodology for miniaturization of the motor equipped in a fluid intermittent control system. The overall volume of the fluid intermittent control system is required to be miniaturized. Generally, the electromagnetic valve is widely used in this kind of system. However, the existence of the electromagnetic valve prevents the system from being miniaturized. To solve this problem, the authors have proposed a new fluid intermittent control system, in which the flow is successfully adjusted by the acceleration and deceleration performance of the motor. As the electromagnetic valve is not needed, the overall volume of the system is considerably decreased. Furthermore, in this paper, the design methodology is proposed to decrease the motor volume. It is discussed in detail how the axial length and the outer diameter of the motor are decreased by increasing the rotational speed. As a result, the guideline for the miniaturization of the motor volume is analytically found.