Kyushu University Academic Staff Educational and Research Activities Database
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nobuyuki sowa Last modified date:2017.09.05

Assistant Professor / Dynamics of Mechanical Systems
Department of Mechanical Engineering
Faculty of Engineering




E-Mail
Homepage
http://mvib.mech.kyushu-u.ac.jp/index.html
Mechanical Vibration Lab.,Dept. of Mechanical Engineering, Faculty of Engineering, Kyushu University .
Phone
092-802-3196
Fax
092-802-0001
Academic Degree
master(engineering)
Field of Specialization
dynamics and control
Outline Activities
My main study are, 1) Countermeasures for Unstable Vibratins Caused by Time Delay, 2)Studies for Vibration Analysis and Stability of Large Scale Nonlinear Systems, 3) Studies of Subspace Contorol.Additionally, it takes charge of the core seminar for freshman and the student experiment for the senior.
Research
Research Interests
  • Elimination Method of Natural Frequency
    keyword : Vibration Control, Montion Control, Robust Control
    2001.04Study on Subspace Contorl.
  • Elucidation of Operating Mechanism of Dynamic Absorber for Parametric Excitation System and Development of Optimization Method
    keyword : Selfexcited vibration, dynamic absorber
    2013.04Prevention Method for Unstable Vibration Caused by Time Delay in Contact Rotating Systems.
  • Study on Flexible Manipulator
    keyword : Vibration Control, Motion Control, Robust Control
    2007.04Study on Flexible Manipulator.
  • Study on Subspace Control
    keyword : Vibration Control, Montion Control, Robust Control
    2001.04Study on Subspace Contorl.
Academic Activities
Papers
1. Optimum Design of Dynamic Absorber for Pattern Formation Phenomena Generated in Contact Rotating Systems (3rd Report, In the Case of a Multi-Degree-of-Freedom System).
2. Optimum Design of Dynamic Absorber for Pattern Formation Phenomena Generated in Contact Rotating Systems (2nd Report, Experimental Verification of Single-Degree-of-Freedom Viscoelastic Model).
3. Nobuyuki Sowa, Takahiro Kondou, Kousuke Hayash, Experimental Verification of Prevention method Using Dynamic Absorbers for Unstable Vibration Caused by Time Delay Due to Viscoelastic Deformation, Proceedings of Asia-Pacific Vibration Conference 2009, CD-ROM, No.115, 2009.11.
4. Nobuyuki Sowa, Takahiro Kondou, Hiroki Mori, Myung-Soo Choi, Prevention Method using Dynamic Absorbers for Unstable Vibration Caused by Time Delay in Contact Rotating Systems , Proceedings of Asia-Pacific Vibration Conference 2007, CD-ROM, OS16-2-3, No.140, 2007.08.
5. Mizue Koga, Takahiro Kondou, Nobuyuki Sowa, Vibration Characteristics of Nonlinear Time Delay System, Proceedings of Asia-Pacific Vibration Conference 2007, CD-ROM, OS08-2-3,No.137, 2007.08.
Presentations
1. Energetic Consideration for the Self Excited Vibration Caused by Time Delay .
2. Pattern Formation Phenomena in Contact Rotating System(Counter-measure Considering an Effect of Diameter Ratio between Two Rubber Rolls).
3. Pattern Formation Phenomena in Contact Rotating System(Analyssi for Nonlinear Viscoelastic Model).
4. Pattern Formation Phenomena in Contact Rotating System(Prevention Method of System with Two Rubber Rolls and its Experimental Verification).
5. Pattern Formation Phenomena in Contact Rotating System(Stability Analysis of System Including Different Time Delays).
6. Prevention Method Using Dynamic Absorbers for Pattern Formation Phenomena (Design Method Considering Structural Modifications).
7. Experimental Verification to Prevention Method Using Dynamic Absorbers for Pattern Formation Phenomena.
8. Experimental Verification of Prevention method Using Dynamic Absorbers for Unstable Vibration Caused by Time Delay Due to Viscoelastic Deformation.
9. Prevention Method Using Dynamic Absorbers for Pattern Formation Phenomena(Experimental Verification to Viscoelastic Multi-degree-of-freedom System)
.
10. Prevention Method Using Dynamic Absorbers for Pattern Formation Phenomena (Effective Design Procedure for Each Mode in Multi-degree-of-freedom System)
.
11. Vibration Characteristics of Nonlinear Time Delay System in Contact Rotating Machinery .
12. Prevention Method Using Dynamic Absorbers for Pattern Formation Phenomena(Design Procedure in Viscoelastic Multi-degree-of-freedom System) .
13. Pattern Formation Phenomena in Contact Rotating Systems(Experimental Verification of Prevention Method for Viscoelastic Model) .
14. Prevention Method using Dynamic Absorbers for Unstable Vibration Caused by Time Delay in Contact Rotating Systems .
15. Vibration Characteristics of Nonlinear Time Delay System.
Membership in Academic Society
  • Japan Sosiety of Mechanical Engineers
Educational