The Research Of Magnetorhelogical Damper With Power Generation

As the magnetorheological fluid becoming more and more commercial, magne-torheological damper(MRD) have been applied in various fields because of low pow-er-consuming, controllable damping force and wide work temperature-range. There-fore, research on the MRD has a great significance. Focusing on the request for outer power resource when MRD works, This paper presents a design of magnetorheologi-cal damper with power generation(MRDwPG), which could not only output con-trolled damping force but recycle the vibration energy to reuse.Firstly, on the basis of reviewing the MRD research, MRDwPG is designed in parts, which are coupled on the working principle. Then the MRDwPG with compact structure, controllable force could be got.Secondly, solve the parameters in layer to classify the non-dimensional design parameters, build the magnetic model of MRD part and power generation (PG) part in theory and use theoretical method and finite element method (FEM) to correct the model.In addition, magnet-shielding performance is analysed in FEM. Basing on the magnetic model, the performance model is derived.Through simulating the sensitiv-ity of non-dimensional parameter to lay a foundation for optimization.Thirdly, build the optimization model oriented on the active pressure in MRD model constrained on force and coil size. Focusing on the PG model, ener-gy-recycling power is set as optimized objectives subjected to the coils, solve the model in GA and Globalsearch algorithm separately and get the optimized design curve to provide a reference for the reality design.Lastly, apply MRDwPG in real suspension system, design the energy processing and conversion circuit,combining with the sky-hook controller to complete the vibra-tion decrease while consuming less energy. Analyze the motion of system in different frequency sinusoidal vibration to illustrate the MRDwPG could use the harvested en-ergy to satisfy all or part energy demand. Therefore, the system can control the vi-bration in less energy,which provides the reference for the later controller design.