Development of a passive anti-vibration system in a frequency region of 1 Hz

1Hz频率区域被动减振系统的开发

• 批准号: 07554004
• 负责人: KURODA Kazuaki
• 金额: $ 6.66万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07554004/
• 关键词: Anti-vibration; X-pendulum; pendulum; mechanical filter; mechanical isolation system; gravitational wave detector; laser interferometer; isolation ratio; 防振技術; 周波数応答; 低周波防振; 重力波天文学; 光干渉計; 地面振動計測; 受動防振; 擬弾性

In the development for the realization of gravitational wave astronomy, a newly devised X-pendulum system has a potentiality to expand its observational freqeuncy to lower band among various anti-vibration systems, which form a basic technology in the interferometric detectors. The object of this research project is to develop a technique of applying this X-pendulum to the anti-vibaration system and to show its characteristic in low frequency with modest price and high reliability. In the first year of this project, one dimensional anti-vibration system was made and tested. From this system, non-rotation of hung mass and cancellation condition of degrading high frequency limit were found. Utilizing this test, a two dimensional version was completed in the second year using four units of normal-inverted X-pendulum. Another prototype with different design was also designed and constructed. These two prototypes wereinstalled in a vaccum chamber with a vaccum duct, 10m long to measure its … More long term stability and its reduction ratio of seismic vibration. The measurement was done by a Michelson interferometer with He-Ne laser light. The result of this measurement showed its desired charactersitic except a few resonant peak in 10 Hz and the limit over 30 Hz. The long term stability was proved to be compensated by a tilt servomechanism. The final version was developed in the third year improving these problems and designed for TAMA installation. This final version attained 8 second period that gave 34dB isolation at 1 Hz. We confirmed that the period can be extended to 20 second improving suspension wire mechanical loss.We have accomplished the technique of the anti-vibration system using X-pendulum that can be applied in low frequency for interferometric gravitational wave detectors. We need some more efforts in wire mechanism, which has extensive number of adjustment places, to prevail this technique in the industrial field. We have designed hinge mechanism X-pendulum for this improvement. We hope that this technique is applied to many places utilizing pendulum. Less

在实现引力波天文学的发展过程中，一种新设计的X摆系统具有将观测频率扩展到低频段的潜力，它是构成干涉探测器的基本技术之一。本课题的研究目的是将X摆应用于防振系统中，以体现其低频特性、价格适中、可靠性高的特点。在项目的第一年，我们制作了一维抗振系统并进行了试验。在此基础上，得到了悬挂质量不旋转和降低高频极限的消除条件，并利用该试验，在第二年用四个正态倒立摆完成了二维模型。另一个原型与不同的设计也被设计和建造。这两个原型被安装在一个真空室与真空导管，10米长，以测量其 ...更多信息 长期稳定性和减震率。用迈克尔逊干涉仪和He-Ne激光进行测量。测量结果表明，除了在10 Hz处有几个谐振峰和在30 Hz以上的极限外，其余都达到了预期的性能。长期稳定性被证明是由倾斜伺服机构补偿。最终版本是在第三年开发的，改进了这些问题，并为TAMA安装而设计。最终版本达到了8秒的周期，在1 Hz时提供了34 dB的隔离。通过实验验证，周期可以延长到20秒，改善了悬丝的机械损耗，实现了X摆抗振系统的技术，可应用于干涉型引力波探测器的低频工作。由于钢丝绳机构具有广泛的调节空间，要想使该技术在工业领域得到推广，还需要在钢丝绳机构方面做出更多的努力。为此，我们设计了铰链机构X摆。我们希望这种技术能应用到许多利用摆的地方。少

项目成果

Kaheita Yuki, Mark A.Barton, Nobuyuki Kanda and Kazuaki Kuroda: "Measuring the anelasticity of Cu-Be film under tensile stress using the X-pendulum" Phys.Lett.A 223. 149-154 (1996)

Kaheita Yuki、Mark A.Barton、Nobuyuki Kanda 和 Kazuaki Kuroda：“使用 X 摆锤测量拉应力下 Cu-Be 薄膜的迟弹性” Phys.Lett.A 223. 149-154 (1996)

Mark A.Barton et al.: "A low-frequency vibration isolation table using multiple crossed-wire suspensions" Rev.Sci.Instrum.67. 3994-3999 (1996)

Mark A.Barton 等人：“使用多个交叉线悬架的低频隔振台”Rev.Sci.Instrum.67。

Mark A.Barton, Nobuyuki Kanda and Kazuaki Kuroda: "A low-frequency vibration isolation table using multiple crossed-wire suspensions" Rev.Sci.Instrum.67. 3994-3999 (1996)

Mark A.Barton、Nobuyuki Kanda 和 Kazuaki Kuroda：“使用多个交叉线悬架的低频隔振台”Rev.Sci.Instrum.67。

K.Kuroda: "Expected Improvement in the Determination of G Using An X pendulum" International Journal of Modern Physics A. 12・11. 1967-1974 (1997)

K.Kuroda：“使用 X 摆确定 G 的预期改进”《国际现代物理学杂志》A. 12・11（1997 年）。

K.Kuroda: "Expected Improvement in the Determination of G Using An X pendulum" Inter.J.of Mod.Phys.A. 12・11. 1967-1974 (1997)

K.Kuroda：“使用 X 摆测定 G 的预期改进”Inter.J.of Mod.Phys.A 1967-1974 (1997)