A Precision Driving System Composed of a Hydraulic Cylinder and High-Speed ON/OFF Valves (Development of the System and Its Application to a Micro-Machine-Tool)

Study on a linear relationship between limited pressure difference and coil current of on/off valve and its influential factors

“…For viscous force, which is a resistance exerting on the core when flow commences, it is affected by the viscosity of the fluid and the movement velocity of valve core, as shown in Eq. (13).…”

“…Muto and Yamada etc. [13] proposed a method for realizing the smooth motion of the system by adjusting the phase difference between the input signals to the valves. In the system to which this method was applied, it was confirmed that the dynamic performance of the hydraulic actuator was remarkably improved.…”