Analysis of the Influence of the Drive Force Distribution Between Axles on an Automobile Stability in Its Curvilinear Motion

Reński, Andrzej

doi:10.1007/978-3-319-45447-4_6

Cited by 4 publications

(8 citation statements)

References 3 publications

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“…It is known from technical and scientific sources [1][2][3][4][5][6] that a brake proportioning system can be installed only on certain axes of a vehicle. That is why we should admit that relation (7) at this rate turns into relations (15) and (16).…”

Section: Theoretical Basis Of Methodology For Calculating the Brakingmentioning

confidence: 99%

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About Application the Tyre-Road Adhesion Determination of a Vehicle Equipped with an Automated System of Brake Proportioning

et al. 2019

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The paper considers a method for calculation and evaluation of an automated brake proportioning system and it also describes assessment of efficiency while using cohesion forces of an automated system during vehicle braking process (MAZ 256200 taken as an example). A method for efficiency estimation of the vehicle braking equipped with an automated brake proportioning system is graphically presented in the paper. A comparable analysis has been made in order to evaluate vehicle braking efficiency in three various conditions of its wheel motion during braking process. The paper contains description of braking processes for a vehicle at its idealized braking, at braking with an operating automated system and at braking with blocked wheels. Mathematical dependences have been proposed and they make it possible to calculate a coefficient of cohesion forces used by an automated brake proportioning system on the basis of time parameters for vehicle braking process. The proposed mathematical dependences take into account design peculiarities of the automated system, i.e. a diagram of modulator arrangement on axes of the vehicle. The executed analysis for calculation accuracy of the coefficient pertaining to use of cohesion forces of the automated system with and without taking into accout rolling force resistance of the vehicle wheels has demonstrated a possibility to apply the proposed calculation methods for carrying out auto-technical expertise while investigating road-traffic accidents involving transport facilities equipped with such systems as ABS. The paper proposes a dependence for identification of a vehicle braking distance on the basis of the coefficient on use of cohesion forces by the automated brake proportioning system. The executed experimental investigations on both test and serial models of the automated brake proportioning system have allowed to justify theoretical discussions concerning application of tyre-road adhesion in the operational process of the vehicle brake proportioning system. The investigation results have shown high efficiency of the test automated brake proportioning system developed by Chair of Automobiles in the name of A. B. Hredescul at Kharkiv National Automobile and Road University under the following braking conditions: dry road surface and compacted snow cover.

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Section: Theoretical Basis Of Methodology For Calculating the Brakingmentioning

confidence: 99%

“…That is because automatic systems may apply properties of tyre-road adhesion in different ways, depending on the mode of a vehicle movement. [1][2][3][4][5][6][7][8][9][10].…”

Section: Sources Analysismentioning

confidence: 99%

About Application the Tyre-Road Adhesion Determination of a Vehicle Equipped with an Automated System of Brake Proportioning

et al. 2019

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“…However, it should be noted that to maintain the required value of the coefficient of dynamism, the authors propose to adjust the ratio of air pressure in the tires of the front and rear wheels of the car, and this is very difficult to implement in practice. In [2], it is proposed to increase the dirigibility and stability of the car during braking by a targeted distribution of braking moments between the wheels of the front and rear axles. The paper shows that the distribution of drive forces can have a significant impact on the stability characteristics of the vehicle.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…The paper shows that the distribution of drive forces can have a significant impact on the stability characteristics of the vehicle. However, this approach is relevant only for vehicles with four-wheel drive, and also, as in [1], the technical implementation of the proposals [2] cause significant difficulties. In [3,4], the authors set out the calculation methods and the results of experimental studies of an automated vehicle braking control system that provides stable movement of the car body during braking.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Parametric synthesis of the electronic control unit of the course stability system of the car

Aleksandrov¹,

Aleksandrova²,

Morhun³

2019

EEJET

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“…Example of a model of a vehicle with many degrees of freedom and many parameters describing its systems is truck model presented by Lozia [11]. Interaction inside the system driver-vehicle-road environment is shown by [14]. Simulation of vehicle's motion becomes more complex, if we discuss both lateral and radial vibrations, which is discussed in [18].…”

Section: Introductionmentioning

confidence: 99%

Simulation of curvilinear motion of automobile with the use of two-degree-of-freedom flat model

Sar

Brukalski

Rokicki

2020

The Archives of Automotive Engineering – Archiwum Motoryzacji

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Development of active safety systems of automobiles is nowadays based not only on road tests, but also on computer simulation of vehicle's curvilinear motion. To properly perform simulation, all required model parameters have to be properly estimated. The less complicated model is, the less parameters it requires. So that, it makes no sense to apply too complicated models, if we are not able to estimate parameters with relatively low error. One of the most popular is two- degree-of-freedom flat model to describe curvilinear motion of automobile. It is widely used in design and improvement of active safety systems. The article discusses the application of simple two- degree-of-freedom flat model of automobile, which requires only several parameters. These parameters are: mass of a vehicle, location of center of gravity of a vehicle, yaw mass moment of inertia of a vehicle, side-slip characteristics. Furthermore, to be able to compare simulation and measurement results, it is necessary to know some input signals such as steering wheel angle and velocity of a vehicle, recorded during road tests. In this article signal of steering wheel angle was taken from Controller Area Network (CAN) bus. In case of model of a vehicle, the Authors decided to compare the results of simulation using two different side slip characteristics known as the dependence between lateral reaction force and side slip angle: linear characteristic (constant cornering stiffness) and the characteristic represented by Pacejka’s Magic Formula in steady-state version.

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Analysis of the Influence of the Drive Force Distribution Between Axles on an Automobile Stability in Its Curvilinear Motion

Cited by 4 publications

References 3 publications

About Application the Tyre-Road Adhesion Determination of a Vehicle Equipped with an Automated System of Brake Proportioning

About Application the Tyre-Road Adhesion Determination of a Vehicle Equipped with an Automated System of Brake Proportioning

Parametric synthesis of the electronic control unit of the course stability system of the car

Simulation of curvilinear motion of automobile with the use of two-degree-of-freedom flat model

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