抄録
Low-pressure water hydraulic is an attractive technology having the low price level of pneumatics, good controllability and stiffness of oil hydraulics as well as safety to environment. This paper deals with the dynamic characteristics of the low-pressure water hydraulic drive system consisting of a vortex pump, a flexible tube with a length of 10m, an electro-magnetic on-off valve and a single rod cylinder with some inertia loads. The step responses of pressure and piston displacement in the water hydraulic ststem under the operation condition of a low pressure are experimentally obtained. And the computer simulation of the system under the above experimental conditions was done by simulation software of OHC-Sim. On the basis of the simulation results the efficiency of water hydraulic system is also discussed.
