Study for Practical use of Magnetic Fluid SemiActive Damper Characterized by Strong Nonlinearity

强非线性磁流体半主动阻尼器的实用化研究

• 批准号: 11650297
• 负责人: NAKAGAWA Toshiko
• 金额: $ 1.98万
• 依托单位: Tokyo Denki University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11650297/
• 关键词: Magnetic Fluid; SemiActiveDamper; Variable Viscosity; Nonlinear Control; Magnetic Fluid Control; Nonlinearity ofFluid; 磁場制御; H^∞制御

Previous study proposed a novel semi active damper that is composed of a cylinder injected with magnetic fluid (M. F.) and a nonlinearly controlled electromagnet Generally M. F. has the very interesting property that the viscosity can be easily changed by the outside magnetic field. Additionally, the damping coefficient of the system is absolutely positive even if the control signals for changing the viscosity fail. This advantage of M. F. is just fit for safe semi active damper systems.In this study, at first, a modified model considering nonlinear characteristics of M. F. such as a Non-Newtonian-Fluid was proposed. Next, in order to enhance the control effects, two kinds of improvements were made in the semi active damper. One was to change the voltage control input to an electromagnet into the current control input. The other was to expand the control range for the M. F. damper by means of feeding a bias current to the electromagnetFinally, the advantages such as better damping performance, smaller control current and flexibility for disturbance with mixed frequencies were confirmed by various digital simulations and vibration experiments and the possibility to practical uses was shown clear.

以往的研究提出了一种新型的半主动阻尼器，该阻尼器是由注入磁流体的圆柱体和非线性控制的电磁铁组成的。此外，即使改变粘度的控制信号失效，系统的阻尼系数也绝对为正。m.f.的这一优点仅适用于安全的半主动阻尼系统。本文首先提出了一种考虑非牛顿流体等流体非线性特性的修正模型。其次，为了提高半主动阻尼器的控制效果，对半主动阻尼器进行了两种改进。一种是将电磁铁的电压控制输入改为电流控制输入。最后，通过各种数字仿真和振动实验，验证了该阻尼器阻尼性能好、控制电流小、对混合频率干扰具有灵活性等优点，表明了该阻尼器具有实际应用的可能性。

项目成果

T.Nakagawa: "Vibratoin experiments and effects of controlling vibration for a semiactive damper with a magnetic fluid base"Proc. of MOVIC. 233-237 (1999)

T.Nakakawa：“基于磁流体的半主动阻尼器的振动实验和振动控制效果”Proc。

T.Nakagawa: "Study of performance improvement of magnetic fluid type semiactive damper"Pcoc. Of ISEM 2001. 41-42 (2001)

T.Nakakawa：“磁流体式半主动阻尼器性能改进的研究”Pcoc。

中川聡子: "Study on performance improvement of magnetic fluid type semi active damper"Proc. of ISEM 2001. 41-42 (2001)

中川佐藤子：“磁流体式半主动阻尼器性能改进的研究”Proc. of ISEM 2001. 41-42 (2001)

中川聡子: "Modelling of a Nonlinear Magnetic Rheological Fluid Semi-active damper"Nonlinear Electromagnetic Systems (IOS press). 379-382 (2000)

Satoko Nakakawa：“非线性磁流变流体半主动阻尼器的建模”非线性电磁系统（IOS Press）379-382（2000）。

中川聡子: "ハミルトンヤコビ不等式を用いた非線形制御手法(磁性流体セミアクティブダンパの例)"電気学会技術報告. 819. 45-45 (2000)

Satoko Nakakawa：“使用 Hamilton-Jacobi 不等式的非线性控制方法（磁流体半主动阻尼器的示例）”IEEJ 技术报告 819. 45-45 (2000)。