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Robust Vibration Control of Vehicle Seat Suspension System Using MR Damper
Chulhee Han(한철희),Do Kyun Shin(신도균),Cheol Soo Shin(신철수),Seung-Bok Choi(최승복) 한국소음진동공학회 2017 한국소음진동공학회 논문집 Vol.27 No.3
This work presents a semi-active seat suspension system using magnetorheological (MR) dampers to enhance the ride comfort of the driver of a commercial vehicle. After determining the required damping force for the seat damper based on the field-dependent yield stress of the MR fluid, the governing equation of the system is derived by integrating a human-body model. In order to reduce the degree of freedom of the full dynamic model, a balanced model reduction is used and the effectiveness of the reduced model is verified based on a comparison in the frequency domain. Subsequently, a new adaptive fuzzy sliding mode controller is developed and implemented to achieve favorable ride comfort of the driver. Control responses such as the acceleration and displacement of the seat are measured in both the time and frequency domains. It is demonstrated that the proposed MR seat suspension system can provide ride comfort that is superior to that of the passive seat suspension system.