基于振动能量回收的自供电MR阻尼器集成与试验研究

Integration and test for a self-powered MR damper based on vibrational energy harvesting

为使磁流变(MR)阻尼器摆脱对外部电源的依赖,基于振动能量回收技术构建了由旋转式永磁直流电机与只需较小能量供给的MR阻尼器集成的自供电MR阻尼器减振系统,测试了能量回收电机的电学性能与自供电MR阻尼器的力学性能,并定性分析了自供电MR阻尼器被动控制的减振机理。结果表明:自供电MR阻尼器可行性强,性能优越,且兼具速度反馈与离复位控制特性。

To make magnetorheological （MR） dampers be free from dependence on an external power supply, a self-powered MR damper control system was built using a rotary permanent magnet direct-current （DC） motor integrated with a MR damper with lower power requirement based on vibrational energy harvesting technology. Its feasibility, advantages and control mechanism were illustrated through test investigations. Both the electrical properties of the energy harvesting motor and the mechanical performances of the self-powered MR damper were measured. In addition, the passive control mechanism of the self-powered MR damper was qualitatively analyzed. The results showed that the self- powered MR damper has higher feasibilities and excellent performances with characteristics of both velocity feedback control and off-and-towards-equilibrium control.