An Algorithm of Work of the Dynamic Stabilization System for a Two-axle Rear-Wheel Drive Car

Examining the trends in the automotive industry, one can see that car manufacturers are constantly improving the level of control over the parameters of motion of wheeled vehicles to achieve maximum stability and controllability of the car. Currently, budget front- and rear-wheel drive models still represent the lion’s share of the automotive market. Their transmissions do not provide the possibility of torque re-distribution between the wheels. In this case, the torque can be changed only through partial braking of individual wheels. The purpose of this work is to develop methods to increase stability and controllability of twoaxle rear-wheel drive vehicles. The author proposes an algorithm of work of the dynamic stabilization system for rear-wheel drive two-axle vehicles through partial braking of the wheels and corrective changing of the rotation angle of the steering wheels (corrective steering). This improves the longitudinal and trajectory stability of the vehicle. Using the simulation modelling methods, it has been established that the most efficient are the algorithms that are used in the following combination: engine input power reduction + creation of a stabilizing moment through re-distribution of torque on individual wheels + corrective steering. Such algorithms make vehicle stabilization more efficient by 20…90%.

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