Vibration Isolation System for Driver's Seats with Negative Stiffness

운전자용 의자의 부강성 진동 절연 시스템

  • Park, Sung-Tae (School of Mechanical and Automotive Engineering, University of Ulsan) ;
  • Lee, Sang-Joo (School of Mechanical and Automotive Engineering, University of Ulsan)
  • 박성태 (울산대학교 기계자동차공학부) ;
  • 이상주 (울산대학교 기계자동차공학부)
  • Received : 2009.07.16
  • Accepted : 2009.09.07
  • Published : 2010.03.01

Abstract

As a vehicle speed increases, more vibration energy is transmitted from chassis to a driver. Current isolation system for the driver's seat by damping control can reduce the transmitted vibration energy near resonance area. But in higher frequency region than natural frequency multiplied by $\sqrt{2}$, the vibration energy transmitted to the driver has a tendency to be increased. Therefore, the method by natural frequency reduction of the system is preferred to increase the effectiveness of the anti-vibration. However, the natural frequency could not be freely reduced due to the nature of the isolation system structure. A new passive suspension system to reduce the natural frequency is proposed. The theoretical analysis and experimental results show better vibration attenuation compared with the current isolation system.

Keywords

References

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