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介绍了一种集成位移传感功能的新型磁流变阻尼器结构及其工作原理.采用ANSYS有限元仿真软件分析了与阻尼器动力性能相关的静态磁场,结果表明对激励线圈施加电流值越大,其磁感应强度也越大.同时对阻尼器的自感应性能进行了谐波磁场仿真分析,仿真结果表明自感应电动势幅值与活塞相对位移成线性比例关系;另外,静态拉伸实验结果也表明自感应电动势幅值与位移保持线性变化,实验测量值与理论值偏差整体在10%以内.仿真和实验结果表明所设计的磁流变阻尼器除了具备常规阻尼力可控功能外,还具有位移自感应性能.
A new structure of magnetorheological damper with integrated displacement sensing function and its working principle are introduced.The static magnetic field related to the dynamic performance of the damper is analyzed by ANSYS finite element software.The results show that the larger the value of current applied to the exciting coil, , The greater the magnetic flux density is.At the same time, the self-induced performance of the damper is simulated by harmonic magnetic field. The simulation results show that the amplitude of self-induced electromotive force is linearly proportional to the relative displacement of the piston. In addition, the static tensile test results also show The amplitude and displacement of self-induced electromotive force maintain a linear change, the deviation between the experimental measurement and the theoretical value is less than 10% as a whole.The simulation and experimental results show that in addition to the conventional damping force controllable function, the designed MR damper also has the displacement Self-sensing performance.