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Design and performance analysis of magnetic shape memory alloy actuator with a compact electromagnetic coil configuration
IEEE Transactions on Magnetics ( IF 2.1 ) Pub Date : 2020-08-01 , DOI: 10.1109/tmag.2020.3000039
Hu Shi , Kun Tan , Jun Xu , Xuesong Mei

Magnetic shape memory alloy (MSMA), which has emerged in recent years, has been proven to have great potential for electromagnetic actuators due to the long life cycle, fast response, and relatively large load capacity. Current research on such material mainly focuses on the fundamentals, thermal effect, composition, and magnetic induction strain, but issues involved in its application to the industry are rarely addressed in detail. This article first analyzed the principle of magnetically induced strain and the corresponding constitutive equations, and investigated the magnetomechanical characteristics of the MSMA sample through measurement carried out on a specially designed experimental setup. Taking advantage of good drive performance, MSMA electromagnetic actuator with spring recovery was designed in detail. In order to resolve the contradiction between compactness and high magnetic field strength, a novel configuration with double-layered coils was proposed to achieve the required magnetic flux density. Influences of input current, prepressure, and spring stiffness on the dynamic response characteristics of the actuator excited by step signal and square wave signal input were analyzed by simulation. Finally, the experimental platform is built to verify the feasibility of the configuration and dynamic characteristics of the actuator. The experimental results show that the designed actuator has good output performance with a response time of 25 ms, demonstrating the superiority of MSMA in microdisplacement actuator with high dynamics.

中文翻译:

具有紧凑电磁线圈结构的磁性形状记忆合金执行器的设计与性能分析

近年来出现的磁性形状记忆合金(MSMA)由于其寿命周期长、响应速度快、承载能力相对较大等优点,已被证明在电磁执行器方面具有巨大的潜力。目前对此类材料的研究主要集中在基本原理、热效应、成分和磁感应应变等方面,但对其工业应用所涉及的问题鲜有详细讨论。本文首先分析了磁致应变的原理和相应的本构方程,并通过在专门设计的实验装置上进行测量研究了 MSMA 样品的磁力学特性。利用良好的驱动性能,详细设计了具有弹簧恢复功能的MSMA电磁执行器。为了解决紧凑性和高磁场强度之间的矛盾,提出了一种具有双层线圈的新型配置,以实现所需的磁通密度。通过仿真分析了输入电流、预压力和弹簧刚度对步进信号和方波信号输入激励的执行器动态响应特性的影响。最后搭建了实验平台,验证了执行器配置和动态特性的可行性。实验结果表明,所设计的执行器具有良好的输出性能,响应时间为 25 ms,证明了 MSMA 在高动态微位移执行器中的优越性。提出了一种具有双层线圈的新型配置,以实现所需的磁通密度。通过仿真分析了输入电流、预压力和弹簧刚度对步进信号和方波信号输入激励的执行器动态响应特性的影响。最后搭建了实验平台,验证了执行器配置和动态特性的可行性。实验结果表明,所设计的执行器具有良好的输出性能,响应时间为 25 ms,证明了 MSMA 在高动态微位移执行器中的优越性。提出了一种具有双层线圈的新型配置,以实现所需的磁通密度。通过仿真分析了输入电流、预压力和弹簧刚度对步进信号和方波信号输入激励的执行器动态响应特性的影响。最后搭建了实验平台,验证了执行器配置和动态特性的可行性。实验结果表明,所设计的执行器具有良好的输出性能,响应时间为 25 ms,证明了 MSMA 在高动态微位移执行器中的优越性。仿真分析了阶跃信号和方波信号输入激励下执行机构的动态响应特性和弹簧刚度。最后搭建了实验平台,验证了执行器配置和动态特性的可行性。实验结果表明,所设计的执行器具有良好的输出性能,响应时间为 25 ms,证明了 MSMA 在高动态微位移执行器中的优越性。通过仿真分析了阶跃信号和方波信号输入激励的执行器动态响应特性和弹簧刚度。最后搭建了实验平台,验证了执行器配置和动态特性的可行性。实验结果表明,所设计的执行器具有良好的输出性能,响应时间为 25 ms,证明了 MSMA 在高动态微位移执行器中的优越性。
更新日期:2020-08-01
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