Research On Design Of Hydraulic System For The Earthquake-Experienced System

The Earthquake-Experienced System discussed here is actually an earthquake shaking table controlled by electro-hydraulic servo system. Shaking table test is an important earthquake engineering research tool. This tool has been achieved a rapid development in recent years, and it is used in various industrial sectors now. The system mainly composed of four modules: the vibration table and support system, hydraulic vibration sys-tem, hydraulic oil system and control system. Most of shaking tables, their seismic wave simulation is based on displacement control.Earthquake-Experienced System relies on the importation of all kinds of seismic wave and frequency, and other relevant parameters. In the direction of the one dimensional, this seismic effect can be accurately simulated by its hydraulic vibration system, so that staff may get a similar experience of earthquakes. In addition, through it can also be used to validate the damping vibration effect of many kinds of material or structure.In order to achieve those required function, some key components of the relevant functional and structural design are selected here. The Earthquake-Experienced System use 2D-Digital valve as the control of electro-hydraulic servo system which has many advantages, like the high precision, fast response, action of high-speed, brake and reverse, etc.What's more, because of the servo valve, and other components that have non-linear impact in essence, the system is a very complicated nonlinear system in essence. In order to get its internal relationship among complicate parameters, the linearization of electro-hydraulic servo system is needed. A simple mathematical model is established. The result of simulation shows the Earthquake-Experienced system is feasibility.