Sliding mode approach in semi-active suspension control
Ride of the vehicle envelops the heave, pitch and rolling motion in forced vibration caused by road unevenness and roughness. Ride comfort is mainly concerned with the ability of chassis to cope with the various forms of the vertical dynamic excitation, which are unpleasant to the driver and passengers. Such excitations can be suppressed by the proper adjustment of passive suspension or control of semi-active and active suspension systems. This chapter introduces recent developments in the area of suspension control methods, overviews basics of vehicle vertical dynamics modelling, provides survey on existing control methods and proposes new hierarchical control architecture to reduce vertical, pitch and roll accelerations during driving over uneven road. This control strategy is based on application of integral sliding mode approach and optimal distribution of virtual demand between four semi-active shock absorbers. Obtained simulation results confirm positive effects in ride comfort compared to the vehicle with passive suspension and continuous Skyhook control.
Sliding mode approach in semi-active suspension control, Page 1 of 2
< Previous page Next page > /docserver/preview/fulltext/books/tr/pbtr005e/PBTR005E_ch6-1.gif /docserver/preview/fulltext/books/tr/pbtr005e/PBTR005E_ch6-2.gif