2001 Fiscal Year Final Research Report Summary
Scientific Research on a Global Design included Multi-Mode Vibration Control for Elastic Car Body taking the Lightweight
| Project/Area Number |
11305020
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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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 | Nihon University |
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Principal Investigator |
SETO Kazuto College of Science and Technology, Nihon University, professor, 理工学部, 教授 (40256798)
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| Co-Investigator(Kenkyū-buntansha) |
HORIUCHI Shinichiro College of Science and Technology, Nihon University, professor, 理工学部, 教授 (30181522)
SUDA Yoshihiro Center for Collaborative Research, The University of Tokyo, Associate professor, 国際・産学共同研究センター, 教授 (80183052)
ISHIHAMA Masao Faculty of Engineering, Kanagawa Institute of Technology, professor, 工学部, 教授 (20298277)
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| Project Period (FY) |
1999 – 2001
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| Keywords | Elastic Car body / Motion control / Vibration control / Light weight / Reduced-order modeling / Active suspension / Modal analysis / Handling and stability |
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| Research Abstract |
In order to construct a global design method in the lightweight vehicles for saving energy, the following four projects was started by joining with four investigators
1. Modeling methods for flexible car bodies with multi-vibration modes and the motion and vibration control using these methods.
2. Experimental modal analysis of the lightweight car body and the development of design method for reducing the weight.
3. Suspension control for railroad vehicles and motorcars.
4. Integrated control of active four wheel steer and individual wheel torque on vehicle handling and stability.
On the first subject, it is difficult to apply the vibration control method of high stiffness cad body to a flexible one. Therefore a new modeling method was developed to indicate multi-order vibration modes using reduced-order *umped mass model. Combining the modeling method and LQ control theory, a flexible cab body with six modes of bouncing, rolling, pitching including bending and torsional vibration modes was effectively controlled It is confirmed that this approach is commonly used for many flexible structural control.
On the second subject, a optimal design method for frame structures to reduce the weight was proposed and confirmed the effectiveness using experimental modal analysis.
An active suspension system for saving energy was developed by the third subject. It is applicable for active control of railroad vehicles and motorcars.
Effectiveness of several different combinations of control inputs for improvement of vehicle handling and stability was investigated by the fourth subject.
During three years from 1999 to 2001, four investigators have deep contact and discussion to solve many problems and the proposed subjects was attempted with well results
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