A method for improving the stability of an automobile

Suspension vibrations on a rough road can cause instability of the vehicle. A new method that makes it possible to avoid instability is introduced and investigated for the first time. This method is efficient when the vehicle is on the road of periodic profile both paved and unpaved. To improve the stability of the vehicle under these conditions, it is necessary to reduce the weight of unsprung parts, which has technological limitations. The proposed method for improving the stability of a vehicle on the road of periodic profile implies the control of forces in the suspension to stabilize vertical forces acting between the wheel and the road. The dynamic mathematical model of the control system for the vertical reactions of the road on a car wheel in motion is described and the results of numerical analysis are presented. The study proved that the control of the vertical reactions of the road on car wheels is an efficient technique to improve the stability of the vehicle on the road of periodic profile if the energy consumption for this control is reasonable. This method can be used in the car design to improve its handling and stability.

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