Research On Vibration Control Algorithm For Magnetorheological Dampers

Magneto-rheological dampers are continuously adjustable damping, wide dynamic range, fast response, low power consumption, it has now become a very promising application of smart devices in vibration control. In the installation of a damping system, it can be achieved vibration control force by changing the damper size of the damping force. Because of complex dynamics, the mechanical description of the current model and the control algorithm are not perfect. Thus the magneto-rheological damper, typical vibration control system and its method of research is of meaningful.In this paper, the use of theoretical analysis and numerical simulation approach are conducted to characterize the dynamical performance of magneto-rheological damper and vibration damping control algorithm for the design and implementation of research. It has set up a relatively complete research methods for the magnetic damper control system design. Specific work includes the following aspects :(1) The modeling and characteristic analysis of magneto-rheological damper. On the basis of hydrodynamic theory, Reference materials test data, non-Newtonian fluid model and magneto-rheological damper demonstrated nonlinear characteristics, it Presents a more accurate and practical nonlinear hysteretic model. Using this model, it draws and analysis the relationship curve between different external magnetic field, different frequencies and damping force. Providing a reference on the design and performance prediction of magneto-rheological damper. It also provides a more accurate model for damping control system design.(2) The modeling and dynamic analysis of magneto-rheological vibration damper control system. It establishes two damping system based on magneto-rheological damper model and the vibration damper control system model, used the equivalent linearization method described magneto-rheological damper model. Through the amplitude-frequency characteristics theory analysis and numerical simulation , it gives the dynamic characteristics of the system. The results proved that magnetic vibration damper control system technology is feasible in application. (3)Vibration control algorithm design and simulation of magneto-rheological damper.In this paper, it provides damping control algorithm based on magneto-rheological damper, improved ceiling-damping control algorithm, designed fuzzy controller and achieved damping PID control of magneto-rheological damper. Using numerical simulation and comparative analysis of the control algorithm, It provides that magneto-rheological damping control can be achieved system control...