CONCLUSION
The novel outer coil mode was confirmed, promoting the development of the smaller MRF damper. The MRF damper with 1.5mm damping gap has good electromechanical properties. In this paper, by reducing the size of the MRF damper, the smoothing damping force was reduced to 1N-4N. It was found that the damping force has a linear relationship with the current, and this relation can be expressed by primary curve. The damping force shows obvious hysteresis with the increase of velocity, this phenomenon is becoming more and more significant with the increase of current and frequency. There is no obvious relationship between damping force and frequency, frequency has little effect on the damping force-displacement curve. The damping force of the MRF damper can be expressed by a nonlinear dynamic model. Simulink simulations show that the model is in good agreement with the experimental curves. For this reason, an analysis software was developed to promote the MR theory and technology improvement.
