An Earlier Predictive Rollover Index Designed for Bus Rollover Detection and Prevention

Tian, Suqing; Lang, Wei; Schwarz, Chris; Zhou, Wencai; Yuan, Jiawei; Chen, YanQin

doi:10.1155/2018/2713868

Cited by 10 publications

(10 citation statements)

References 17 publications

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“…qi v c ΔQ = K X -K ΔP (13) Besides, the flow of the liquid can also be defined as ( 14): t m m m e V ΔQ = D θ + C ΔP + ΔP 4β (14) From ( 13) and ( 14), the relationship between the servo valve's displacement, the motor shaft's rotation angle, and the fluid pressure's change is shown as in (15):…”

Section: B Actuator Dynamics Modelmentioning

confidence: 99%

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Preventing the Rollover Phenomenon of the Vehicle by Using the Hydraulic Stabilizer Bar Controlled by a Two-Input Fuzzy Controller

Nguyen

2021

IEEE Access

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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.

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Section: B Actuator Dynamics Modelmentioning

confidence: 99%

“…According to [13], these authors used a neural network to predict the rollover phenomenon through the Roll Index. Besides, the Roll Index is also used on a variety of vehicles, such as buses [14], electric vehicles [15], etc. The models used in these papers are similar.…”

Section: Introductionmentioning

confidence: 99%

Preventing the Rollover Phenomenon of the Vehicle by Using the Hydraulic Stabilizer Bar Controlled by a Two-Input Fuzzy Controller

Nguyen

2021

IEEE Access

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“…Most recently, Zhu et al have developed the rollover prediction method for the truck based on an experimental model with many observed variables [19]. Besides, many models predicting the limit of rollover and the rollover index were also performed [20][21][22][23][24][25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Establishing the Method to Predict the Limited Roll Angle of the Vehicle Based on the Basic Dimensions

Nguyen¹,

Nguyen²,

Hoang³

et al. 2021

MMEP

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The roll angle of the vehicle φ is a characteristic parameter for the vehicle's instability. This value appears when the vehicle steers. If the vehicle’s body is tilted, the value of the vertical force at the wheels Fzij will also change. When the value of Fzij reaches zero, the wheel will be lifted off the road, the rollover phenomenon can occur. At this time, the roll angle of the vehicle will reach the maximum value φmax. Previous researches have often used only the vehicle dynamics model to determine the limits of this phenomenon. However, the calculation and simulation process are quite complicated. Therefore, this research has proposed a novel method that can calculate the limit of the rollover phenomenon more easily. In this research, the Rollover State Function (RSF) was established to calculate the limited roll angle of the vehicle. According to the content of the paper, this function depends only on the basic dimensions of the vehicle such as the height of center of the gravity, the track width, etc. Besides, it has relatively high accuracy, even when the vehicle's mass changes, its difference is not large. Therefore, the results of the paper can be applied to later studies to predict the rollover phenomenon.

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“…Due to the characteristics of large quality, high center of gravity and narrow wheelbase, the bus is prone to lateral instability under special driving conditions such as turning on slippery roads [1][2][3]. If this lateral instability phenomenon cannot be predicted accurately and be timely and effectively controlled, it will eventually lead to bus rollover accident [4].…”

Section: Introductionmentioning

confidence: 99%

An adaptive nonsingular fast terminal sliding mode control for yaw stability control of bus based on STI tire model

Sun

Wang

Cai

et al. 2020

Preprint

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In this paper, a novel adaptive nonsingular fast terminal sliding mode (ANFTSM) control scheme for yaw stability control (YSC) is proposed to improve the bus curve driving stability and safety on slippery roads. There are three major contributions in the design process of the bus YSC system. The first contribution is that the STI (Systems Technologies Inc.) tire model, which can effectively reflect the coupling relationship between the tire longitudinal force and lateral force, is established based on experimental data and firstly adopted in the bus YSC system design. The second contribution is a novel YSC strategy based on ANFTSM, which has the merits of fast transient response, finite time convergence and high robustness against uncertainties and external disturbances. The third contribution is that the robust least-squares allocation method is used to solve the optimal allocation problem of the tire forces, whose objective is to achieve the desired direct yaw moment through the effective distribution of the brake force of each tire. To verify the feasibility, effectiveness and practicality of the proposed bus YSC approach, the TruckSim-Simulink co-simulation results are finally provided.

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An Earlier Predictive Rollover Index Designed for Bus Rollover Detection and Prevention

Cited by 10 publications

References 17 publications

Preventing the Rollover Phenomenon of the Vehicle by Using the Hydraulic Stabilizer Bar Controlled by a Two-Input Fuzzy Controller

Preventing the Rollover Phenomenon of the Vehicle by Using the Hydraulic Stabilizer Bar Controlled by a Two-Input Fuzzy Controller

Establishing the Method to Predict the Limited Roll Angle of the Vehicle Based on the Basic Dimensions

An adaptive nonsingular fast terminal sliding mode control for yaw stability control of bus based on STI tire model

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