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研制了一种用于被动力/力矩再现的新型磁流变液阻尼器,该阻尼器能够在磁场的作用下产生连续变化的阻尼力/力矩.阻尼器的结构包括一个上盖和一个下盖,一个转子设置于上盖和下盖之间,转子与上下盖之间的间隙充满磁流变液,在磁场作用下其粘度变大时,转子相对于壳体将受阻尼力作用.阻尼力矩的模型主要由以下几部分组成:一是由磁场作用于磁流变液产生的力矩,二是由磁流变液的动力粘度产生的力矩,最后是由装置的摩擦产生的力矩.由动力粘度产生的力矩可以通过简单的方法进行计算,由摩擦产生的力矩可以通过实验测得,而由磁场产生的力矩则要通过电磁场的有限元分析得到.最后,对研制的阻尼器原型进行了性能实验,检验了设计方法的有效性.
A new type of MR fluid dampener is developed for power / torque reproduction, which can generate continuously changing damping force / moment under the action of magnetic field.The structure of the damper consists of an upper cover and a lower cover , A rotor is arranged between the upper cover and the lower cover, and the gap between the rotor and the upper and lower covers is filled with the magnetorheological fluid. When the viscosity of the rotor is increased due to the magnetic field, the rotor will be affected by the damping force with respect to the housing. Of the model consists of the following components: First, the magnetic field generated by the role of the magnetorheological fluid generated torque, the second is the dynamic viscosity of the magnetorheological fluid generated torque, and finally the torque generated by the device friction by the dynamic viscosity The generated torque can be calculated by a simple method, the torque generated by the friction can be measured experimentally, and the torque generated by the magnetic field is obtained through the finite element analysis of the electromagnetic field.Finally, the performance experiment of the developed damper prototype is performed , Test the effectiveness of the design method.