Prototype design and experimental verification of an electromagnetic actuator for parametric stiffness excitation

E. Schmidt, H. Ecker
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引用次数: 2

Abstract

Initial design, realization and application of a novel electromagnetic actuator to create a time-harmonic variation of a mechanical stiffness will be discussed. It is known from theoretical studies, that such a time-periodic parameter variation at a non-resonant parametric resonance frequency can improve the damping behaviour of a mechanical system. Thus, a device consisting of a current driven coil positioned between two permanent magnets has been designed and tested. Finite element analyses have been carried out to obtain the mechanical stiffness provided as a function of the coil current excitation. With this novel electromagnetic actuator it is possible to demonstrate the improved damping behaviour of a mechanical two-mass system, when the actuator is operating at or near a certain parametric combination resonance frequency.
电磁作动器参数刚度激励的原型设计与实验验证
本文将讨论一种新型电磁致动器的初步设计、实现和应用,以产生机械刚度的时谐变化。从理论研究可知,在非共振参数共振频率下,这种时间周期参数变化可以改善机械系统的阻尼性能。因此,设计并测试了一个由位于两个永磁体之间的电流驱动线圈组成的装置。进行了有限元分析,以获得作为线圈电流激励的函数提供的机械刚度。使用这种新型的电磁执行器,当执行器在某个参数组合共振频率或附近工作时,可以证明机械双质量系统的阻尼性能得到改善。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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