2006 Fiscal Year Final Research Report Summary
Active Vibration Isolation System Using Negative Stiffness
| Project/Area Number |
16360112
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Dynamics/Control
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| Research Institution | Saitama University |
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Principal Investigator |
MIZUNO Takeshi Saitama University, Graduate School of Science and Engineering, Professor (20134645)
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| Co-Investigator(Kenkyū-buntansha) |
TAKASAKI Masaya Saitama University, Graduate School of Science and Engineering, Associate Professor (10333486)
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| Project Period (FY) |
2004 – 2006
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| Keywords | Vibration isolation / Neagative stiffness / Active vibration isolation system / Zero-power magnetic suspension / Comliance control / Weight support mechanism |
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| Research Abstract |
(1) Nonlinear Compensation of Zero Power Magnetic Suspension for High-Performance Vibration Isolation Systems
One 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 Stiffness
A 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 Mechanism
Vibration 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 Mechanism
A 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.
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[Journal Article] An Active Microvibration Isolator with Zero-Power Controlled Magnetic Suspension Technology2006
Author(s)
Hoque, Md. E., Takasaki, M., Ishino, Y., Suzuki, H. and Mizuno, T.
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Journal Title
JSME International Journal, Series C Vol. 49, No. 3
Pages: 719-726
Description
「研究成果報告書概要(欧文)」より
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[Presentation] A Nonlinear Compensator for Zero-Power Control System2005
Author(s)
Hoque, M.E., Kamiya, T., Takasaki, M., Ishino, Y. and Mizuno, T.
Organizer
SICE Annual Conference 2005 in Okayama
Place of Presentation
Okayama University, Okayama, JAPAN
Year and Date
2005-08-10
Description
「研究成果報告書概要(和文)」より
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[Presentation] A Nonlinear Compensator for Zero-Power Control System2005
Author(s)
Hoque, M. E., Kamiya, T., Takasaki, M., Ishino, Y. and Mizuno, T.
Organizer
SICE Annual Conference 2005 in Okayama
Place of Presentation
Okayama University, Okayama, Japan
Year and Date
2005-08-10
Description
「研究成果報告書概要(欧文)」より
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