Takahiko Itoh

Application and study on the Hydraulic Switching Power Control

Recently, a technology on the machines under computer control is become established. However huge working power of the hydraulic mechanics is difficult to control with taking efficient power transmission and its precision. Then hydraulic switching power control system is contrived based on analogy between electric circuit and fluid circuit. Hydraulic and electric switching devices are called valves as both circuits on nomenclature. The hydraulic switching control on huge working power have been disclose only a few years ago, at first in the world on JFPS Spring Meeting on Fluid Power, May 2002 in Japan. This paper is described process of some experiment to have evidence to practical use of the Hydraulic Switching Control. We have obtained patents about the hydraulic switching control as a new theory on the Fluid Power Systems, and registered it as the trade mark “FST” means Fluid Switching Transmission. Outline of the performance of the FST is also described in this paper.