The principles for improving dynamic stability of multi-wheeled vehicles

The principles for improving stability of motion of multi-wheeled vehicles (MWV) are first developed. Along with the improved performance, such as mobility, cross-country capability, and maneuverability, new technical capabilities of vehicles issue new problems and challenges for designers. Thus, the increase in average cruising speed (not only on roads with rigid pavement, but also on rough ground) imposes high requirements not only to suspension systems, but also to the stability of course and trajectory motion, rollover stability, and handling. In this paper, the stability and handling of MWVs are studied and the principles for controlling the motion of vehicles that provide the enhanced course and trajectory stability are established. The techniques for stabilizing MWVs are verified and the developed control laws are checked for stability. The mathematical simulation methods used prove the efficiency and effectiveness of the proposed control laws of active safety systems. The results of research will be useful for designing and manufacturing various classes of MWVs in the automotive industry. They can also be used by designers developing control systems for wheeled vehicles.

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