Design optimization of a giant magnetostrictive driving system for large stroke application considering vibration suppression in working process
Design optimization of a giant magnetostrictive driving system for large stroke application considering vibration suppression in working process
复制标题
考虑工作过程振动抑制的大行程超磁致伸缩驱动系统设计优化
DOI：
10.1016/j.ymssp.2019.106560
复制
发表时间：
2020-04-01
影响因子：
8.4
通讯作者：
Hu, Jun
中科院分区：
文献类型：
--
作者：
Sun, Xiaoqing;Liu, Yucheng;Hu, Jun
超磁致伸缩驱动系统（GMDS）的轻量化和低能耗是航空航天工程面临的两大挑战，这在一定程度上与GMDS的能力相冲突。为了解决这一困境，同时实现空间环境下的大行程和被动振动抑制，本文提出了一种由超磁致伸缩作动器和柔顺放大机构组成的GMDS方案，并引入了新的设计优化策略。首先，提出了一种新颖的GMDS来实现这些功能。然后根据能流结构理论划分电磁转换部分、磁能转换部分和磁机转换部分三个部分，以准确评估能耗。因此，借助等效电路图、等效磁路图和功能理论，可以清晰地制定各部门的关键能耗模型。然后，通过伪刚体模型方法（PRBM）建立柔顺放大机构的等效减振固有频率模型，以评估减振能力。接下来，可以根据关键部件参数构建整个系统的等效质量。最后，提出并实施设计优化策略以捕获全局最优解。此外，优化后的 GMDS 的性能通过有限元分析和实验测试进行了验证。 (C) 2019 Elsevier Ltd. 保留所有权利。
Light weight and low energy consumption of giant magnetostrictive driving system (GMDS) signify two main challenges facing in aerospace engineering, which conflict with the capability of the GMDS to some extent. For aim of addressing this dilemma, meanwhile realizing a large stroke and passive vibration suppression in space environment, this article proposes a GMDS scheme consisted of giant magnetostrictive actuator and compliant amplification mechanism, and moreover introduces a new design optimization strategy. First, a novel GMDS is proposed for realizing those functions. Then, three sectors, namely the electromagnetic conversion sector, the magnetic energy transfer sector and the magneto -mechanical conversion sector, are divided according to energy flow structure theory, to accurately evaluate the energy consumption. Therefore, the key energy consumption model of each sector could be formulated clearly by the aid of equivalent circuit diagram, equivalent magnetic circuit diagram and work-energy theory. Afterward, the equivalent vibration suppression natural frequency model of the compliant amplification mechanism is formulated through pseudo-rigid-body model method (PRBM), for evaluating the vibration suppression capability. Next, the equivalent mass of the whole system could be constructed on basis of the key components parameters. Finally, the design optimization strategy is proposed and implemented to capture the global optimal solution. Additionally, the performance of the optimized GMDS is validated by finite element analysis and experimental tests. (C) 2019 Elsevier Ltd. All rights reserved.