A semi-active ER seat suspension system was proposed for commercial vehicles and its control performances were investigated by realizing the sliding mode controller (SMC). A 12-dof seat-driver model has been derived and reduced to 6-dof via the balanced model reduction. The SMC with state observer was then designed and experimentally realized to attenuate unwanted vertical vibration to a seated driver. In the experiment, a driver directly sat on the controlled seat, and vertical displacement and frequency-weighted rms accelerations were measured at the seat frame and driver's head, respectively. Then, it has been demonstrated that transmitted vibration levels are substantially reduced by adopting the semi-active ER seat damper. In addition, the ER seat suspension associated with the SMC was shown to reduce SEAT value by more than 10 %, and to reduce VDV ratio by more than 15 %. In the near future, a field test of the proposed ER seat suspension system will be undertaken on road environment as a second phase of this study.
Vibration control of electrorheological seat suspension with human-body model using sliding mode control
Schwingungsregelung bei einer elektrorheologischen Sitzaufhängung mit Körpermodell mittels gleitender Regelung
Journal of Sound and Vibration ; 303 , 1/2 ; 391-404
2007
14 Seiten, 12 Bilder, 1 Tabelle, 22 Quellen
Article (Journal)
English
Robust sliding mode control of an electrorheological suspension system with parameter perturbations
Automotive engineering | 2003
|Robust sliding mode control of an electrorheological suspension system with parameter perturbations
Online Contents | 2003
|SAGE Publications | 2006
|