Modeling and analyzing of hydraulic power element in active structural control

For the hydraulic power element of a shaking table actuation system in the active control experimental system, the unloaded system has different characters compared with the loaded one. In order to design an effective controller and accurately make the input wave, the dynamic model of unloaded system and loaded one was constructed based on the active mass damper control experimental system. This dynamic model was validated by finite element method. The results indicate that the constructed model is correct and can be provided as a basis for the shaking table controller design in next step.