Active Vibration Isolation System Using Negative Stiffness

使用负刚度的主动隔振系统

• 批准号: 16360112
• 负责人: MIZUNO Takeshi
• 金额: $ 8.7万
• 依托单位: Saitama University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-16360112/
• 关键词: Vibration isolation; Neagative stiffness; Active vibration isolation system; Zero-power magnetic suspension; Comliance control; Weight support mechanism

(1) Nonlinear Compensation of Zero Power Magnetic Suspension for High-Performance Vibration Isolation SystemsOne of the problems of the vibration isolation system using zero-power magnetic suspension is that the amplitude of negative stiffness varies from the nominal value when disturabance force is applied to the isolation table. A nonlinear feedback control was applied to zero-power magnetic suspension to overcome this problem. The carried out experiment demonstrated the efficacy of this method.(2) Development of a Pneumatic Three-axis Vibration Isolation System Using Negative StiffnessA three-axis active vibration isolation system with pneumatic actuators for generating negative stiffness was developed. A control method of realizing a suspension with negative stiffness by the actuator was derived. It was demonstrated experimentally that the equalization of the amplitude of negative and positive stiffness enables the system to have zero compliance to direct disturbance.(3) Introduction of a Weight Support MechanismVibration isolation system using zero-power magnetic suspension was modified to be equipped with a weight support mechanism. The mechanism can reduce the static load force that the zero-power magnetic suspension has to support. Experimental study demonstrates that the modified system maintains infinite stiffness against direct disturbance even if such a weight support mechanism is added.(4) Six-Axis Vibration Isolation System Using Zero-Power Magnetic Suspension with a Weight Support MechanismA six-axis vibration isolation system was developed which uses zero-power control in combination with a passive weight support mechanism. The nonlinear compensation was also applied to widen the operation range. The performance of the controller was evaluated by conducting several experiments.

(1)高性能隔振系统的零功率磁悬浮非线性补偿采用零功率磁悬浮的隔振系统的问题之一是，当扰动力施加到隔振台上时，负刚度的幅值与标称值发生变化。将非线性反馈控制应用于零功率磁悬浮来克服这个问题。所进行的实验证明了该方法的有效性。(2)利用负刚度的气动三轴隔振系统的开发开发了一种利用气动执行器产生负刚度的三轴主动隔振系统。推导了一种利用执行器实现负刚度悬架的控制方法。实验证明,负刚度幅值与正刚度幅值的均衡使得系统对直接扰动具有零柔顺性。(3)重量支撑机构的引入对零功率磁悬浮隔振系统进行了改造,增加了重量支撑机构。该机构可以减小零功率磁悬浮所承受的静负载力。实验研究表明，即使添加了这种重量支撑机构，改进后的系统仍能保持无限刚度以抵抗直接干扰。(4)采用零功率磁悬浮和重量支撑机构的六轴隔振系统开发了一种采用零功率控制与被动重量支撑机构相结合的六轴隔振系统。还应用非线性补偿来扩大操作范围。通过进行多次实验来评估控制器的性能。

项目成果

負の剛性を利用したユニット型除振装置

使用负刚度的单元式隔振器

• 发表时间: 2007
• 期刊: 精密工学会誌 73
• 作者: Koichi Yasuoka;Naoki Nakagomi;Shozo Ishii;水野 毅
• 通讯作者: 水野 毅

Vibration Isolation System using Zero-power Magnetic Suspension with a Weight Suspension Mechanism

采用带有配重悬挂机构的零功率磁悬浮的隔振系统

• 发表时间: 2005
• 期刊: Preprints of 16th World Congress IFAC
• 作者: Mizuno;T.;Kishita;D.;Hoque;M.E.;Takasaki;M.;Ishino;Y.
• 通讯作者: Y.

Nonlinear Compensation of Zero Power Magnetic Suspension for High-Performance Vibration Isolation Systems

高性能隔振系统的零功率磁悬浮非线性补偿

• 发表时间: 2006
• 作者: Mizuno;T.;Ishino;Y. and Takasaki;M.
• 通讯作者: M.

Vibration isolation system combining zero-power magnetic suspension with springs

• DOI: 10.1016/j.conengprac.2006.06.001
• 发表时间: 2007-02-01
• 期刊: CONTROL ENGINEERING PRACTICE
• 影响因子: 4.9
• 作者: Mizuno, Takeshi;Takasaki, Masaya;Hirakawa, Keiichiro
• 通讯作者: Hirakawa, Keiichiro

A Nonlinear Compensator for Zero-Power Control System

零功率控制系统的非线性补偿器

• 发表时间: 2005
• 作者: Hoque;M.E.;Kamiya;T.;Takasaki;M.;Ishino;Y. and Mizuno;T.
• 通讯作者: T.