旋转式磁流变阻尼器及其驱动器研究

Research on Rotary Magnetorheological Brake and the Brake Driver

研制了转子具有圆柱体结构的旋转式磁流变阻尼器,转子的两个端面和圆柱面均为工作面,设计了适用于磁流变阻尼器的永磁密封装置,利用阻尼器内的磁流变液实现了动密封。应用有限元法对阻尼器模型进行了电磁场分析,结合有限元分析结果与磁流变液的本构关系,对磁流变阻尼器的力学性能进行了仿真研究。开发了用于磁流变阻尼器的驱动器,实现了应用工控机对阻尼器的屈服力矩进行控制。在此基础上,建立了阻尼器控制实验系统,对阻尼器的屈服力矩控制进行了实验研究。

The rotarymagnetorheological brake which has a cylindrical shaped rotor was developed, and two end surfaces and the cylindrical surface of the rotor were worked as effective areas. The permanent magnet sealing device for the magnetorheological brake was designed, and the dynamic sealing was realized by using the magnetorheological fluid itself as a sealing element. Using the finite element method, electromagnetic field analysis was performed, with the results of the magnetic analysis and the relation between the yield stress and the magnetic field strength of the magnetorheological fluid, the performance simulation of the magnetorheological damper was realized. The driver for the magnetorheological brake was developed, and the damper yield torque control by industrial computer was achieved. On these bases, the damper control experiment system was established, and the yield torque control of the brake was researched experimentally.