Research On Semi-active Vibration Control System Of The Double Spring Support Plate

Vibration is a common phenomenon in human production and life. A lot of problems about the vehicle are caused by vibration, such as driving security problems caused by vibration of high-speed train, ride comfort problems caused by vehicle vibration etc. A suspension is one of the key components in improving the vibration performance of a vehicle, it is also the important way to improving the ride comfort of a vehicle. The semi-active suspensions based on magnetorheological damper have become a hotspot in the field of vehicle vibration control, because they possess similar performance with active suspensions and have some attractive characters such as simple structure, low energy consumption, fast response and high fail-safe.The double spring support plate model is simplified by body-bogie-wheel system of train, it can also be simplified by a quarter-car suspension system. In this paper, in order to reduce the vibration of the double spring support plate model, the dynamic models of magnetorheological damper and semi-active control strategies are studied by adopting the methods of theoretical analysis, numerical simulation and experimental test. First, through the tensile test of damper to identify the parameters in the Bingham model. Second, by studying the effect of the system parameters such as the damping ratio, mass ratio and stiffness ratio on the output, subsequently the effect of dampers on the coupling vibration control system is studied, for the hysteresis and nonlinear characteristics of damper, fuzzy control and adaptive neural fuzzy control algorithm are designed and improved, as well as the simulation analysis of the semi-active vibration control system with double spring support plate. Finally, according to the test requirements, hardware platform of the control system is set up and verification experiment is completed. This study provides theoretical and experimental basis for the application of damper in semi-active suspension of vehicle and the implementation of semi-active control method.