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首页> 外文期刊>Shock and vibration >A New Approach to Achieve Variable Negative Stiffness by Using an Electromagnetic Asymmetric Tooth Structure
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A New Approach to Achieve Variable Negative Stiffness by Using an Electromagnetic Asymmetric Tooth Structure

机译：利用电磁非对称齿结构获得可变负刚度的新方法

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摘要

Traditional passive nonlinear isolators have been paid much attention in recent literatures due to their excellent performance compared to linear vibration isolators. However, they are incapable of dealing with varying conditions such as changing excitation frequency due to the nonadjustable negative stiffness. To solve this drawback, a new approach to achieve variable negative stiffness is proposed in this paper. The negative stiffness is realized by an electromagnetic asymmetric magnetic tooth structure and can be changed by adjusting the magnitude of the input direct current. Analytical model of the electromagnetic force is built and simulations of magnetic field are conducted to validate the negative stiffness. Then the EATS is applied to vibration isolation and an electromagnetic vibration isolator is designed. Finally, a series of tests are conducted to measure the negative stiffness experimentally and confirm the effect of the EATS in vibration isolation.
机译：与线性振动隔离器相比，传统的无源非线性隔离器由于其出色的性能而在最近的文献中引起了广泛关注。但是，由于无法调节的负刚度，它们无法应对变化的条件，例如改变激励频率。为了解决这个缺点，本文提出了一种实现可变负刚度的新方法。负刚度是通过电磁非对称磁齿结构实现的，可以通过调整输入直流电的大小来改变它。建立了电磁力的分析模型，并进行了磁场模拟以验证负刚度。然后将EATS应用于隔振，并设计了电磁隔振器。最后，进行了一系列测试，以实验方式测量负刚度，并确认EATS在隔振中的作用。

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  • 来源
    《Shock and vibration》 |2018年第5期|7476387.1-7476387.11|共11页
  • 作者

    Han Chao; Liang Weilong; Liu Xueguang; Wu Muyun;

  • 作者单位

    Changan Automobile Co Ltd, Powertrain Global R&D Ctr, Chongqing 400000, Peoples R China;

    Harbin Engn Univ, Coll Power & Energy Engn, Harbin 150001, Heilongjiang, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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