| Project/Area Number |
05650244
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
Dynamics/Control
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| Research Institution | TAKUSHOKU UNIVERSITY |
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Principal Investigator |
MITIMURA Seiichi TAKUSHOKU UNIVERSITY,MECHANICAL SYSTEMS ENGINERING,ASSOCIATE PROFESSOR, 工学部, 助教授 (70092575)
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| Co-Investigator(Kenkyū-buntansha) |
SUZUKI Yasuyuki TAKUSHOKU UNIVERSITY,MECHANICAL SYSTEMS ENGINERING,ASSISTANT, 工学部, 助手 (90196882)
TAMURA Akiyoshi TAKUSHOKU UNIVERSITY,MECHANICAL SYSTEMS ENGINERING,PROFESSOR, 工学部, 教授 (30016290)
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| Project Period (FY) |
1993 – 1994
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| Project Status |
Completed (Fiscal Year 1994)
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| Budget Amount *help |
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1994: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1993: ¥1,200,000 (Direct Cost: ¥1,200,000)
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| Keywords | VIBRATION CONTROL / FLEXIBLE ROTOR / VIBRATION OF ROTATING BODY / NATURAL FREQUENCY / CRITICAL SPEED / MODEL DAMPING RATIO / MODAL BALANCING / MAGNETIC BEARING |
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| Research Abstract |
The PID controller with an analog circit is widely used in the active magnetic bearing system.Although this system is simple and non-expensive, the ability of vibration control for a flexible rotor is not sufficient.To reduce resonance vibrations of a flexible rotor suspended by active electromagnetic bearings, the state feedback control whose design is besed on an approximate reduced-order model is effective.For a realization of this control, it is necessary to estimate unbalance forces.One method which is often used for estimating the state is so called a state observer and this method is vallid only for external forces being periodic.The other method is an inverse system in which external forces have not to be periodic in comparison with a state observer.In this research using these estimator we design the state feedback controller which enables to improve modal damping of the mechanical system independently.In the experimental system applied above concept, it is verified that the feedback control which relates a modal velocity has a capability to improve a dampimg property of the mechanical systemon each mode.
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