2002 Fiscal Year Final Research Report Summary
Control of Self-Excited Oscillation
| Project/Area Number |
12650438
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Control engineering
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| Research Institution | University of Tsukuba |
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Principal Investigator |
AOSHIMA N Univ. of Tsukuba, Inst. of Eng. Mech. and Syst., Professor, 機能工学系, 教授 (60013710)
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| Co-Investigator(Kenkyū-buntansha) |
YABUNO H Univ. of Tsukuba, Inst. of Eng. Mech. and Syst., Associate Prof., 機能工学系, 助教授 (60241791)
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| Project Period (FY) |
2000 – 2002
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| Keywords | Self-excited oscillation / Control / Parametric resonance / Hunting motion / Dynamis stabilization / Manipulator / Nonlinear / Biturcation |
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| Research Abstract |
Stabilization control methods for the hunting motion of a railway wheelset and for the parametric resonance of a body subjected to anti-symmetric force are theoretically proposed. The efficiency of the linear suspension for the wheelset on the global stability is analyzed and the method to increase the critical speed of the hunting motion is discussed. Also, a dynamic damper utilizing the nonlinear coupling effect between the main system and the damper is constructed and the validity of this system for the above parametric resonance is theoretically and experimentally examined. Furthermore, a position control method for an underactuated manipulator is proposed without state feedback control of the free Link by utilizing the parametric resonance under high-frequency excitation. The nonlinear characteristics are investigated and the control strategy is deduced by the bifurcation analysis. Experiments using a simple apparatus confirm the validity of the proposed control method.
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