| 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)
村山 誠 明立精機株式会社, 技術2グループ, チーフ(研究職)
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| Project Period (FY) |
2004 – 2006
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| Project Status |
Completed (Fiscal Year 2006)
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| Budget Amount *help |
¥13,600,000 (Direct Cost: ¥13,600,000)
Fiscal Year 2006: ¥4,200,000 (Direct Cost: ¥4,200,000)
Fiscal Year 2005: ¥4,300,000 (Direct Cost: ¥4,300,000)
Fiscal Year 2004: ¥5,100,000 (Direct Cost: ¥5,100,000)
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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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