Bai Zhuan, Zhang Zonghe, Wang Ju, Sun Xiaoqing, Hu Wei
Department of Mechanical Engineering, Donghua University, Shanghai 201620, China.
Department of Public Affairs, Law School, Shanghai University of International Business and Economics, Shanghai 201620, China.
Micromachines (Basel). 2021 Nov 14;12(11):1397. doi: 10.3390/mi12111397.
Giant magnetostrictive transducer with micro and nano precision has a wide application prospect in the field of remote sensing. However, excessive heat loss of components could generate during the energy conversion and transfer from electric energy to magnetic energy, and magnetic energy to mechanical energy, thereby affecting its long-term service and also reducing energy utilization. In this paper, a new magnetostrictive transducer is proposed and its excitation coil, internal and external magnetic circuit are optimized from the perspective of reducing heat loss. With the help of theoretical and finite element analysis, the response law between key parameters and heat loss of key components are summarized, which provides a basis for reducing heat loss. Finally, according to the optimization scheme, the prototype is processed, and the temperature rise and dynamic output performance of the transducer are tested by constructing an experimental setup. The results show that the transducer has a low temperature rise and good frequency response characteristics, which can provide support for long-time precise actuation on-orbit.
具有微纳精度的超磁致伸缩换能器在遥感领域具有广阔的应用前景。然而，在电能到磁能、磁能到机械能的能量转换和传递过程中，部件可能会产生过多的热损耗，从而影响其长期服役，也降低了能量利用率。本文提出了一种新型磁致伸缩换能器，并从减少热损耗的角度对其励磁线圈、内外部磁路进行了优化。借助理论分析和有限元分析，总结了关键参数与关键部件热损耗之间的响应规律，为减少热损耗提供了依据。最后，根据优化方案加工出样机，并通过搭建实验装置测试了换能器的温升和动态输出性能。结果表明，该换能器温升低，频率响应特性良好，可为在轨长时间精确驱动提供支撑。
