Study on the Rollover Characteristic of In-Wheel-Motor-Driven Electric Vehicles Considering Road and Electromagnetic Excitation

Tan, Dan; Wang, Haitao; Wang, Qiang

doi:10.1155/2016/2450573

Cited by 9 publications

(10 citation statements)

References 14 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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“…and substituting Eqs. (9) and (10) into Eqs. (1)-(8), the following equation of state space can be obtained:…”

Section: State Space Model Of Systemmentioning

confidence: 99%

“…In addition, a nonlinear eight-DOF model was put forward including longitudinal, lateral, yaw, roll, and four-wheel rotational motions [8,9]. In order to reflect the vehicle dynamic characteristics in different directions, a dynamic model with sixteen-DOF was presented, including longitudinal, lateral, yaw, vertical, pitch, roll motions of the vehicle body; the rotational motion of four wheels, and vertical motions of the unsprung masses [10]. Na et al proposed a new fournode membrane element model based on bending modification [11].…”

Section: Introductionmentioning

confidence: 99%

Study on Rollover Index and Stability for a Triaxle Bus

Jin

Huang

et al. 2019

Chin. J. Mech. Eng.

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Vehicle rollover, and its resulting fatalities, is an actively researched topic especially for multi-axle vehicles in the field of vehicle dynamics and control. This paper first presents a new rollover index for a triaxle bus to accurately evaluate its rollover possibility and then discusses the influence laws of the vehicle rollover dynamics to explore the mechanism of its stability. First, a six degree of freedom rollover model of the triaxle bus is developed, including lateral, yaw, roll motion of the sprung mass of the front/rear axle, and roll motion of the unsprung mass of the front/rear axle. Next, some key parameters of the vehicle rollover model are identified. A new rollover index is deduced according to the basics of vehicle dynamics, to predict vehicle rollover risk for the triaxle bus, which is verified by TruckSim. Furthermore, the influence laws of vehicle rollover dynamics by vehicle parameters and road parameters are discussed based on the simulation results. More importantly, the results show that the new method of modeling can precisely describe the rollover dynamics of the studied bus, and the proposed new index can effectively evaluate the rollover possibility. Therefore, this study provides a theoretical basis to improve anti-rollover ability for triaxle buses.

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“…Zhang et al [ 30 ] proposed the inference that the unsprung mass plays a different role in the rollover motion between a flat road and an uneven road, and verified it with typical situations. Tan et al [ 31 ] investigated the negative effect of wheel motor vibration on vehicle anti-rollover performance. In addition, the tire contact stability has been given little attention in existing UCC designs.…”

Section: Introductionmentioning

confidence: 99%

Unified Chassis Control of Electric Vehicles Considering Wheel Vertical Vibrations

Chen

Wang

2021

Sensors

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In the process of vehicle chassis electrification, different active actuators and systems have been developed and commercialized for improved vehicle dynamic performances. For a vehicle system with actuation redundancy, the integration of individual chassis control systems can provide additional benefits compared to a single ABS/ESC system. This paper describes a Unified Chassis Control (UCC) strategy for enhancing vehicle stability and ride comfort by the coordination of four In-Wheel Drive (IWD), 4-Wheel Independent Steering (4WIS), and Active Suspension Systems (ASS). Desired chassis motion is determined by generalized forces/moment calculated through a high-level sliding mode controller. Based on tire force constraints subject to allocated normal forces, the generalized forces/moment are distributed to the slip and slip angle of each tire by a fixed-point control allocation algorithm. Regarding the uneven road, H∞ robust controllers are proposed based on a modified quarter-car model. Evaluation of the overall system was accomplished by simulation testing with a full-vehicle CarSim model under different scenarios. The conclusion shows that the vertical vibration of the four wheels plays a detrimental role in vehicle stability, and the proposed method can effectively realize the tire force distribution to control the vehicle body attitude and driving stability even in high-demanding scenarios.

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Study on the Rollover Characteristic of In-Wheel-Motor-Driven Electric Vehicles Considering Road and Electromagnetic Excitation

Cited by 9 publications

References 14 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

Study on Rollover Index and Stability for a Triaxle Bus

Unified Chassis Control of Electric Vehicles Considering Wheel Vertical Vibrations

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