Longitudinal wheel slip during ABS braking

Hartikainen, Lassi; Petry, Frank; Westermann, Stephan

doi:10.1080/00423114.2014.991332

Cited by 11 publications

(6 citation statements)

References 7 publications

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“…Accordingly, the optimization model is unsolvable. If the optimization model is unsolvable, then the expected longitudinal force is replaced by equation (19) or (20) because the expected longitudinal force cannot meet the requirements of lateral stability. Specifically, the yaw rate and sideslip angle considerably deviate from the expected values.…”

Section: Analysis Of Control Performancementioning

confidence: 99%

“…The slip ratio of a tire has become the key in wheel torque allocation control. 19 In the anti-lock braking control of vehicles during braking, the braking hydraulic pressure is often controlled with reference to the optimal slip ratio to obtain the maximum longitudinal tire force. 20,21 However, this method is only suitable when the wheel slip ratio exceeds the optimal slip ratio, and increasing the wheel slip ratio for augmenting the tire longitudinal force when the slip ratio is small is unreasonable.…”

Section: Introductionmentioning

confidence: 99%

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Collaborative control of lateral stability and braking performance of vehicles during braking-in-turn maneuver

Zhang

Huang

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part D:

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The active safety control of vehicles during braking-in-turn maneuver involves longitudinal and lateral dynamic control. The lateral stability and braking performance of vehicles can be ensured by properly coordinating the longitudinal and lateral forces of tires. In this study, a control system with a three-layer structure is used to achieve the above-mentioned purpose. The expected yaw rate and sideslip angle are adopted to calculate the direct yaw moment to guarantee the lateral stability of vehicles in the motion tracking layer. Considering the minimization of tire workload usage and braking force deviation as optimization objectives, torque allocation control is achieved for the direct yaw moment with lateral stability and the upper bound of longitudinal force (UBLF) of tires as constraint in the torque allocation layer. In the braking hydraulic pressure control layer, the hydraulic pressure in the wheel cylinder is adjusted according to the expected braking force of the wheel. This study proposes a method for determining the UBLF based on the optimal slip ratio (UBLF_OSR), which cannot only avoid obtaining the lateral force of tires but also directly restrict the distribution of tire force. The control system performance is analyzed on the basis of MATLAB/AMESim co-simulation. Results show that the proposed collaborative control strategy of lateral stability and braking performance ensures the lateral stability and braking performance during braking-in-turn maneuver.

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Section: Analysis Of Control Performancementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Collaborative control of lateral stability and braking performance of vehicles during braking-in-turn maneuver

Zhang

Huang

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part D:

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show abstract

“…They depend on tire properties as well as several influences such as performance of anti-lock braking system (ABS), tire-vehicle interaction and road surface temperature and texture. 2,3 While rubber friction dynamics of tires determining tire properties have been studied by using tire test rigs in more detail, it is not yet fully understood how relevant tire properties, determining the generation of forces, can be identified by means of full vehicle tests.…”

Section: Introductionmentioning

confidence: 99%

Application of tire sensors for an integrated approach to evaluate longitudinal tire characteristics for braking performance

Degenhart¹,

Edelmann

Plöchl

2020

Proceedings of the Institution of Mechanical Engineers, Part D:

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Braking performance is a key requirement for tires, significantly affecting the braking distance of vehicles. Considering longitudinal tire dynamics, tire characteristics and parameters, as well as influences from vehicle and ambient conditions have to be identified for an integrated evaluation of tire performance. Various testing methods for identification of tire characteristics are available, yet most of them lack the ability to measure directly at the tire/road contact. Tire sensors have been a popular research topic, which may allow for identification of tire properties during test maneuvers in the contact region. This article features the analysis of longitudinal tire dynamics at full (ABS) braking by means of three 3-axis accelerometers fixed to the inner liner of four different sets of front and rear summer tires. Considering both steady-state and dynamic tire braking properties, skid trailer measurements of force–slip characteristics as well as brake tests with the tire accelerometers are presented for the different tires and compared with each other. Characteristics, affecting the overall braking performance, measured by the tire accelerometers at the contact patch indicate a meaningful correlation to the measured steady-state force–slip characteristics. A basic model-based analysis, utilizing the tire brush model, completes the evaluation of longitudinal tire characteristics with respect to braking performance.

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“…Vehicle subsystems control has established ample consideration for more than three decades both academically and experimentally. The majority of these systems are based on regulating the tire forces in both longitudinal and lateral directions such as Acceleration Slip Regulation (ASR) [1], Active Front Steering (AFS) [2], Electronic Stability Control (ESC) [3,4], Antilock Braking System (ABS) [5], and Active Suspension (AS) [6]. It is widely recognized that, ESC-based systems have been showed very successfully in stability recovery with consideration of disturbing the forward dynamics of vehicle, and maybe affecting unwanted forward decelerations.…”

Section: Introductionmentioning

confidence: 99%

Coordinated Chassis Control Based on Vehicle Lateral Acceleration Using Fuzzy Logic Control

Elhefnawy¹,

Sharaf²,

Ragheb³

et al. 2017

International Conference on Aerospace Sciences and Aviation Tec

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This paper presents an advanced coordination of integrated control system which consist of three different controllers namely Electronic Stability Control (ESC), Active Front Steering (AFS), and Active Suspension (AS) using Fuzzy Logic Control (FLC) in order to improve vehicle handling, cornering stability, and rollover prevention with anti-lock braking system (ABS) to avoid wheel locking during generating differential braking by ESC control. Based on a well-developed and validated fourteen degrees of freedom full vehicle model with non-linear tire characteristics, a reference yaw-roll plane vehicle model is introduced to compare and therefore control the yaw rate, side slip angle, and roll angle of the vehicle body. For rollover prevention indices, the dynamic load transfer ratio is defined to check the effectiveness of the proposed controller. The Coordination chassis control is based on the lateral acceleration value as input to FLC, and the outputs are the increment factors to the three controllers varying from zero to one. Three membership functions are chosen to represent the lateral acceleration as input to the supervisor controller, to define the control authority for each actuator. The universe of discourse for each membership function is selected according to the study of the effect of each controller stand alone in vehicle performance. The numerical modelling is carried out through the MATLAB / Simulink environment which suits the control and optimization process. Different standard test maneuvers namely J-turn, fishhook, and double lane change have been carried out by considering standard test maneuvers with different driving speeds. The simulation results are compared during three cases namely, the uncontrolled system, the combined controller, and the proposed coordinated controller. The results show a substantial improvement of the vehicle stability in terms of vehicle lateral acceleration, side slip angle, yaw rate, roll angle, and the for the developed coordinated controller compared to combined controller or the conventional system without control.

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Longitudinal wheel slip during ABS braking

Cited by 11 publications

References 7 publications

Collaborative control of lateral stability and braking performance of vehicles during braking-in-turn maneuver

Collaborative control of lateral stability and braking performance of vehicles during braking-in-turn maneuver

Application of tire sensors for an integrated approach to evaluate longitudinal tire characteristics for braking performance

Coordinated Chassis Control Based on Vehicle Lateral Acceleration Using Fuzzy Logic Control

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