Abstract
When the vehicle is traveling at high speed and suddenly steers, a rollover phenomenon may occur. The main cause of this phenomenon is the appearance of a centrifugal force, which is proportional to the mass and the square of the velocity. In order to limit this situation, the method of using the hydraulic stabilizer bar (active stabilizer bar) has been proposed. The performance of the hydraulic stabilizer bar is highly dependent on the control method, which has been designed to ensure the stabilizer bar’s operation. Previous research often only used simple dynamics models and conventional linear control methods. Therefore, the performance of the stabilizer bar is not guaranteed. At the same time, the factors affecting the movement of a vehicle are not mentioned. This will cause inaccuracies. This research used a spatial dynamics model combined with a non-linear double-track dynamics model, which fully describes the effects of vehicle oscillations. Besides, the two-input Fuzzy control method is also proposed. This is a completely novel model, and it is not like the previous models that have been used to study the stabilizer bar. The results of this research show that if the vehicle uses the hydraulic stabilizer bar controlled by a two-input Fuzzy controller, the values of the roll angle and roll index have been reduced. As a result, stability and safety have been significantly improved. The achievements of this research will be the basis for the development of other intelligent control methods in the future.
Highlights
The stability and safety of the vehicle when traveling on the road is one of the most important issues
The rollover phenomenon is caused by the effect of centrifugal force, which is produced when the vehicle steers
With the aim of continuing to improve and develop the model based on the available views, this paper focuses on establishing a vehicle dynamics model and control method for the active stabilizer bar
Summary
The stability and safety of the vehicle when traveling on the road is one of the most important issues. When the vehicle is moving on the road, many situations can occur, which can affect the stability of the vehicle. The rollover phenomenon is caused by the effect of centrifugal force, which is produced when the vehicle steers. This force is proportional to the mass of the vehicle and the square of the velocity. According to [1], if the vertical force at the wheel approaches zero, the roll angle of the vehicle will reach the maximum limitation, max. These accidents often have extremely serious consequences for both passengers and goods in the vehicle
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