Fluid Damper Semi-active Control System

In recent years, vibration control technologies have been improved rapidly in both theoretical research and engineering application. Semiactive control has become an attractive research field because it can reach to the nearly same effect of active control with less energy. As a typical smart material, magnetorheologic (MR) fluids are mature and commercially available. MR dampers based on MR fluids has become a typical representative of semiactive controllable devices with simple structure, controllable damping force, rapid response, strong damping force, and less energy consumption. The application of MR damper has become more and more widely.This paper's research is mainly about MR damper's application in semi-active control field. Firstly, the principle and application fields of MR damper are introduced. The modeling of MR damper include theory modeling and experientment modeling. Choosing semi-active suspension as the control model, research about the control structure and algorithm of semi-active control system are done. The control system is analyzed by Simulink simulation, which proves the control effect. At last, the design of control system and ways of experientment are introduced.