抄録
In this report, unstable vibration occurring in a hydraulic servomechanism controlled by a throttle valve when the feedback circuit of the system is closed is examined. It has been ascertained from the experimental and theoretical considerations that the unstable vibration observed in this experiment was caused by the coupling effect of the system parameters. This hydraulic servomechanism can be stabilized both by increasing the system rigidity and by decreasing the control valve mass. It is important that the system parameters must be established taking into consideration both the inconsistent demands on the control characteristics and the stability criteria.
