Journal articles: 'ABS braking'

1

Girovský, Peter, Jaroslava Žilková, and Ján Kaňuch. "Optimization of Vehicle Braking Distance Using a Fuzzy Controller." Energies 13, no. 11 (June 11, 2020): 3022. http://dx.doi.org/10.3390/en13113022.

Full text

Abstract:

The paper presents the study of an anti-lock braking system (ABS) that has been complemented by a fuzzy controller. The fuzzy controller was used to improve the braking performance of the vehicle, particularly in critical situations, for example, when braking a vehicle on wet road. The controller for the ABS was designed in the MATLAB/Simulink program. The designed controller was simulated on a medium-size vehicle model. During testing, three braking systems were simulated on the vehicle model. We compared the performance of a braking system without an ABS, a system with a threshold-based conventional ABS, and a braking system with the proposed ABS with a fuzzy controller. These three braking systems were simulation tested during braking the vehicle on a dry straight road and on a road with combined road adhesion. A maneuverability test was conducted, where the vehicle had to avoid an obstacle while braking. The results of each test are provided at the end of the paper.

APA, Harvard, Vancouver, ISO, and other styles

2

Zheng, Jun Long. "Research on Analog Simulation of Automobile ABS Based on Unigraphis Software." Applied Mechanics and Materials 380-384 (August 2013): 648–51. http://dx.doi.org/10.4028/www.scientific.net/amm.380-384.648.

Full text

Abstract:

Many traffic accidents are caused by automobile brake problems, human consciousness is difficult to accurately control the car's emergency braking in emergency situations, which requires a special automotive braking system ABS that assists the driver to prevent accidents. ABS system goes through the way of pumping to brake, it can prevent automobile from slipping phenomenon due to tire locked die. The automobile ABS system' working principle and its performance are studied, the first part elaborates the working principle and its work flow of ABS system; the second part establishes the EBD control mathematical model of ABS system; in the third part, the use of Unigraphis software carries out simulation for vehicle ABS, automobile brake and vehicle ABS integrated model are set up by Unigraphis software powerful modeling functions, using the calculation module calculates the change of temperature as well as braking force in process of braking, finally to obtain the system temperature of ABS system that is small in the process of braking, however the braking force is a change of curve, so as to prevent slipping phenomenon caused by the tire locked die, providing the theoretical basis for the design and research of ABS.

APA, Harvard, Vancouver, ISO, and other styles

3

Sokolovskij, Edgar. "EXPERIMENTAL INVESTIGATION OF THE BRAKING PROCESS OF AUTOMOBILES." TRANSPORT 20, no. 3 (June 9, 2005): 91–95. http://dx.doi.org/10.3846/16484142.2005.9638002.

Full text

Abstract:

The present article depicts the results of investigation of the braking parameters of automobiles equipped with ABS and without ABS. The values of the automobile deceleration, the increase of the deceleration time and the time of disbraking while braking on a dry asphalt‐concrete surface which was fixed in the course of the experimental investigation are presented. The dependence of deceleration of automobiles equipped with ABS and without ABS upon the primary driving speed is reflected and substantiated. The results of the investigation of braking of automobiles equipped with ABS and without ABS under winter conditions, i.e. on ice and snow are presented.

APA, Harvard, Vancouver, ISO, and other styles

4

Zulhilmi, I. M., M. H. Peeie, S. M. Asyraf, I. M. Sollehudin, and I. M. Ishak. "Experimental Study on the Effect of Emergency Braking without Anti-Lock Braking System to Vehicle Dynamics Behaviour." International Journal of Automotive and Mechanical Engineering 17, no. 2 (July 4, 2020): 7832–41. http://dx.doi.org/10.15282/ijame.17.2.2020.02.0583.

Full text

Abstract:

An anti-lock braking system (ABS) is a basic skid control system that can prevent the tire from locking up. In an emergency braking situation, a high possibility that the skidding phenomenon can occur without ABS. This incident become worse when an emergency braking is applied either on wet or dry surfaces. Although ABS is crucial to prevent the collision, some vehicles still do not have ABS. This study is aimed to analyse the vehicle’s dynamic behaviour during emergency braking on wet and dry surface condition. The experimental vehicle model is a Malaysian sedan car namely Proton Persona. This instrumented car is equipped with sensors,video camera and data acquisition systems to determine the vehicle’s motion. In the experiment,when the vehicle reached a maximum speed of 60 km/h, the driver push the brake pedal firmly until the car stop. From the experimental results, the effect of emergency braking without ABS is clearly seen at the wheel speed. The tire locked up can be observed when emergency braking was applied on the wet surface. However, for the emergency braking on the dry surface, the tire decreased gradually. This finding shows that without ABS, the vehicle is unsafe and accident can occur. The experimental data from this study also can be used as a guideline to a researcher and manufacturer in the development of ABS and safety system of the vehicle

APA, Harvard, Vancouver, ISO, and other styles

5

Wang, Jun, Jun Kui Qiao, Zhi Quan Qi, and Bo Zhen Liu. "Research on Integrated System Control Strategy of Regenerative Braking and Anti-Lock Braking System for Electric Vehicle." Applied Mechanics and Materials 249-250 (December 2012): 596–603. http://dx.doi.org/10.4028/www.scientific.net/amm.249-250.596.

Full text

Abstract:

Based on ABS System,a regenerative and pneumatic baking system was proposed,which can adjust pneumatic braking force precisely through ABS valve in order to guarantee the distribution of braking force. A control strategy using logic threshold was made,considering ECE regulation,control logic of ABS system,braking torque of motor and charging-discharging characteristic of battery. A co-simulation model was built with the platform of Simulink-AMESim and the simulation was performed under different braking intensity and driving cycles. The results indicate that the vehicle can achieve good braking regeneration effect with ensuring braking stability .Ratio of energy recycling can achieve 16.26% in London bus driving cycles.

APA, Harvard, Vancouver, ISO, and other styles

6

Ignatyev, Pavel A., Stefan Ripka, Norbert Mueller, Stefan Torbruegge, and Burkhard Wies. "Tire ABS-Braking Prediction with Lab Tests and Friction Simulations." Tire Science and Technology 43, no. 4 (October 1, 2015): 260–75. http://dx.doi.org/10.2346/tire.15.430401.

Full text

Abstract:

ABSTRACT The invention and application of antilock braking systems (ABS) has resulted in a significant improvement of traffic safety and a reduction of stopping distance, especially on wet roads [1]. The reason for this success is rather clear: ABS is designed to steer the braking process in the most efficient way by keeping an optimal level of tire slip. At the same time, it must be clear that ABS uses braking forces generated in the tire footprint, and really good braking is possible only with high-performance tires. The best way to probe tire performance is to build tires and test them. This is, however, a long and an expensive procedure, so prediction of ABS performance based on results of some simple experiments is a very attractive supplement to the development process. Tire-braking performance is related to the friction of rubber on a surface. Relevant friction mechanisms can include adhesion, rubber hysteresis, and various kinds of viscous friction. All of these phenomena depend on the local sliding velocity, load, and temperature of tread rubber. Tire blocks pass the footprint area of a braking tire very rapidly, but their dynamics are indeed influenced by ABS. All of these aspects make the problem of ABS-braking prediction very intricate. In this publication, we present an approach for prediction of the ABS-braking performance. The approach links friction measurements conducted in laboratory to tire tests results. The friction of six specially designed compounds was measured on dry and wet surfaces using a high-speed linear friction test rig. Obtained experimental results are analyzed with the aid of rubber friction theory [2,3] involving both surface and rubber as input parameters. It is demonstrated that lab friction test procedures can be used for prediction of ABS wet braking performance.

APA, Harvard, Vancouver, ISO, and other styles

7

Aparow, Vimal Rau, Ahmad Fauzi, Muhammad Zahir Hassan, and Khisbullah Hudha. "Development of Antilock Braking System Based on Various Intelligent Control System." Applied Mechanics and Materials 229-231 (November 2012): 2394–98. http://dx.doi.org/10.4028/www.scientific.net/amm.229-231.2394.

Full text

Abstract:

This paper presents about the development of an Antilock Braking System (ABS) using quarter vehicle model and control the ABS using different type of controllers. Antilock braking system (ABS) is an important part in vehicle system to produce additional safety for drivers. In general, Antilock braking systems have been developed to reduce tendency for wheel lock and improve vehicle control during sudden braking especially on slippery road surfaces. In this paper, a variable structure controller has been designed to deal with the strong nonlinearity in the design of ABS controller. The controllers such as PID used as the inner loop controller and Fuzzy Logic as outer loop controller to develop as ABS model to control the stopping distance and longitudinal slip of the wheel.

APA, Harvard, Vancouver, ISO, and other styles

8

Ariff, M. H. M., Hairi Zamzuri, N. R. N. Idris, and Saiful Amri Mazlan. "Antilock Braking System Slip Control Modeling Revisited." Applied Mechanics and Materials 393 (September 2013): 637–43. http://dx.doi.org/10.4028/www.scientific.net/amm.393.637.

Full text

Abstract:

The introduction of anti-lock braking system (ABS) has been regarded as one of the solutions for braking performance issues due to its notable advantages. The subject had been extensively being studied by researchers until today, to improve the performance of the todays vehicles particularly on the brake system. In this paper, a basic modeling of an ABS braking system via slip control has been introduced on a quarter car model with a conventional hydraulic braking mode. Results of three fundamental controller designs used to evaluate the braking performance of the modeled ABS systems are also been presented. This revisited modeling guide, could be a starting point for new researchers to comprehend the basic braking system behavior before going into more complex braking systems studies.

APA, Harvard, Vancouver, ISO, and other styles

9

Xu, Qiwei, Chuan Zhou, Hong Huang, and Xuefeng Zhang. "Research on the Coordinated Control of Regenerative Braking System and ABS in Hybrid Electric Vehicle Based on Composite Structure Motor." Electronics 10, no. 3 (January 20, 2021): 223. http://dx.doi.org/10.3390/electronics10030223.

Full text

Abstract:

An antilock braking system (ABS) can ensure that the wheels are not locked during the braking process which is an important system to ensure the safety of braking. Regenerative braking is also a crucial system for hybrid vehicles and helps to improve the cruising range of the car. As such, the coordinated control of a braking system and an ABS is an important research direction. This paper researches the coordinated control of the regenerative braking system and the ABS in the hybrid vehicle based on the composite structure motor (CSM-HEV). Firstly, two new braking modes which are engine-motor coordinated braking (EMCB) and dual-motor braking (DMB) are proposed and the coordinated control model of regenerative braking and ABS is established. Then, for the purpose of optimal operating efficiency and guaranteeing the vehicle brake slip rate, a braking force distribution strategy based on predictive control algorithm is proposed. Finally, the Simulink model is established to simulate the control strategy. Results show that the slip rate can well track the target and ensure the efficient operation of the system. Compared with the normal braking mode, the braking energy recovery rate of EMCB is similar, but it can reduce the fuel loss of the engine during the braking process by 30.1%, DMB can improve the braking energy recovery efficiency by 16.78%, and the response time to track target slip is increased by 12 ms.

APA, Harvard, Vancouver, ISO, and other styles

10

Ashok Kumar, Srinivaas, S. Thirumalini, P. Mohankumar, R. Ram Sundar, and C. Aravind. "Simulation Study on Variants of ABS." International Journal of Engineering & Technology 7, no. 3.6 (July 4, 2018): 97. http://dx.doi.org/10.14419/ijet.v7i3.6.14948.

Full text

Abstract:

The performance characteristics of different variants of Anti-Lock Braking System (ABS) in a normal passenger car is investigated. ABS prevent lock-up of wheels and maintains steer ability of the vehicle during braking. Vehicle stopping distance, brake pressure, wheel slip and slide-slip are made using Simulink software and system study was conducted an investigation is done. The variants of ABS taken for the study are 2-channel ABS (front wheels), Cross-ABS (alternate wheels: front left and rear right) and full (four channel) ABS. The Simulink model was interfaced with IPG Carmaker and simulation was performed to include the aerodynamics, tire friction and road friction. The results of the simulation were validated to obtain conclusions on the braking performance for different variants of ABS.

APA, Harvard, Vancouver, ISO, and other styles

11

Bera, T. K., K. Bhattacharya, and A. K. Samantaray. "Bond graph model-based evaluation of a sliding mode controller for a combined regenerative and antilock braking system." Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering 225, no. 7 (July 7, 2011): 918–34. http://dx.doi.org/10.1177/2041304110394558.

Full text

Abstract:

Combined regenerative and antilock braking in electric/hybrid-electric vehicles provides higher safety in addition to an energy storing capability. Development of a control law for this type of braking system is a challenging task. The antilock braking system (ABS) uses a control strategy to maintain the wheel slip within a predefined range. A sliding mode controller (SMC) for ABS is developed to maintain the optimal slip value. The braking of the vehicle, performed by using both regenerative and antilock braking, is based on an algorithm that decides how to distribute the braking force between the regenerative braking and the antilock braking in emergency/panic braking situations as well as in normal city driving conditions. Detailed bond graph models of a quarter car and four-wheeled vehicles are used in this article to implement and test the control laws. It is found that with combined regenerative and antilock braking, the vehicle’s safety increases (in terms of stopping distance and manoeuvrability) and some amount of kinetic energy can be recovered and stored in the regenerative battery pack. The passenger comfort is improved when a sliding mode ABS controller is used in place of a standard ABS controller for the mechanical braking part. Moreover, the influence of load transfer on the wheels during braking was evaluated on a four-wheeled vehicle model.

APA, Harvard, Vancouver, ISO, and other styles

12

Chu, Liang, Xiang Wang, Lei Zhang, Liang Yao, and Yong Sheng Zhang. "Integrative Control of Regenerative Braking System and Anti-Lock Braking System." Advanced Materials Research 706-708 (June 2013): 830–35. http://dx.doi.org/10.4028/www.scientific.net/amr.706-708.830.

Full text

Abstract:

For Electric Vehicle (EV), energy saving and endurance mileage prolonging are very important. Regenerative Braking System (RBS) is a key point in this respect. At the same time, braking safety is a rigid demand of EV. In this respect, the Anti-lock Braking System (ABS) has an excellent performance. As a result, the integration of RBS and ABS plays an important role in the development of the EV control. In this paper, a dynamic adaptive threshold theory decides when RBS should exist will be studied, and when the states of vehicle reach the adaptive threshold, a sliding mode control method will be used to meet the total braking force and the system will reduce the motor braking force. Before slip rate of vehicle reaches the ABS threshold, the regenerative braking force will be reduced to 0. The braking safety will be improved in this way.

APA, Harvard, Vancouver, ISO, and other styles

13

van der Merwe, Nico A., P. Schalk Els, and Vidas Žuraulis. "ABS braking on rough terrain." Journal of Terramechanics 80 (December 2018): 49–57. http://dx.doi.org/10.1016/j.jterra.2018.10.003.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

McManus, Kerry J., Aaron S. Blicblau, Christopher J. Broadhurst, and Ashley M. S. Carter. "Real-Time Detection of Unsealed Surfaces During Skidding." Transportation Research Record: Journal of the Transportation Research Board 1819, no. 1 (January 2003): 237–43. http://dx.doi.org/10.3141/1819a-35.

Full text

Abstract:

The antilock braking system (ABS) fitted to modern passenger vehicles is intended to provide reliable and efficient braking under critical road conditions or in emergency situations. Thus, ABS-equipped vehicles should remain steerable and maintain directional stability in the event of emergency braking. The ABS on vehicles operates on the principle of detection of brake lockup and release of the lockup to prevent an uncontrollable skid developing on sealed roads. However, on gravel roads or snow-covered roads braking distances can be reduced if brake lockup occurs and a wedge of gravel or snow is allowed to form in front of the wheels. The intervention of ABS prevents the wedge from forming to any significant degree, thereby extending the braking distance. An investigation was carried out of a method of discriminating between sealed and unsealed road surfaces in which a signal can be developed so that an alternative ABS algorithm can be applied specifically for gravel-covered surfaces. An attempt was made to identify and measure the buildup of gravel in front of the wheel directly, using an infrared distance-measurement sensor. Initial tests have shown that the system can provide a signal to the ABS, which will allow a timely response to enable intervention in the activation of the algorithms in the ABS.

APA, Harvard, Vancouver, ISO, and other styles

15

Chu, Liang, Liang Yao, Zi Liang Zhao, Wen Ruo Wei, and Yong Sheng Zhang. "Study of a Method for Improving the Anti-Lock Brake System of Electric Vehicle." Applied Mechanics and Materials 157-158 (February 2012): 542–45. http://dx.doi.org/10.4028/www.scientific.net/amm.157-158.542.

Full text

Abstract:

The Anti-lock Braking System (ABS) of Electric Vehicle (EV) is improved in this paper. Based on the research of system structure and motor, a new method is proposed to adjust the threshold and coordinate the motor braking force with the friction braking force. So the traditional threshold control algorithm of ABS is improved for the EV. The simulation results based on the MATLAB/Simulink model indicate that the improved ABS can keep the wheels in the stability region and decrease the motor regenerative braking force as soon as possible. The balance between brake safety and energy recovery is achieved through this method.

APA, Harvard, Vancouver, ISO, and other styles

16

Zhao, Ling. "Vehicle Braking Stability Analysis in Turn Condition." Applied Mechanics and Materials 607 (July 2014): 604–7. http://dx.doi.org/10.4028/www.scientific.net/amm.607.604.

Full text

Abstract:

Considering the influence of wheel vertical load transfer and Steering angle, the paper establishes a dynamic model of 7 degrees freedom for vehicle under Braking in Turn Condition. Based on this model, wheel lock braking and ABS braking were researched and simulated. The simulation results show directly that first lock of front wheel loses vehicle steering performance, first lock the rear wheel sideslips, ABS braking can prevent loss of vehicle steering performance and sideslip, but slightly long braking distance.

APA, Harvard, Vancouver, ISO, and other styles

17

Wang, Ren Guang, Guang Kui Shi, Hong Tao Chen, Lin Tao Zhang, and Chao Yu. "A New Coordinate Control Method for Electric Motor Regenerative Braking and ABS Coordinate." Advanced Materials Research 490-495 (March 2012): 3–6. http://dx.doi.org/10.4028/www.scientific.net/amr.490-495.3.

Full text

Abstract:

In pure electric vehicle and hybrid electric vehicle, the adoption of motor barking for energy recycling make its braking control more complicated. Making good use of braking energy can improve vehicle efficiency. A new method was developed to coordinate the motor regenerative braking and ABS braking. Which identify the road condition with real time basing on wheel speed information from four wheel speed sensors. Then control system decides the braking force provided by ABS system. The residual braking force is produced by motor barking to meet total braking force requirements. The two braking forces are coordinated by control system to perform brake function of vehicle.

APA, Harvard, Vancouver, ISO, and other styles

18

Yang, Fu Guang, Jiu Hong Ruan, and Yi Bin Li. "Simulation of the Integrated ABS and DYC Control for 4WID Electric Vehicle with Regenerative Braking." Applied Mechanics and Materials 313-314 (March 2013): 1125–29. http://dx.doi.org/10.4028/www.scientific.net/amm.313-314.1125.

Full text

Abstract:

Study the lateral stability control method with regenerative braking for 4WID electrical vehicle whiling braking, an integrated control strategy with primary objective to enhance vehicle lateral stability was proposed, by which the regenerative braking, hydraulic braking, ABS and direct yaw moment control system were coordinated effectively. Simulation results on split-μ road indicated that compared with traditional ABS, the integrated control method can improve the lateral stability of vehicle at urgent braking condition, and increase the mileage of electric vehicles.

APA, Harvard, Vancouver, ISO, and other styles

19

Wang, Ren Guang, Bin Wang, and Han Wen Sun. "Development of Test Bench for Coordinate Control between ABS and Regenerative Braking." Applied Mechanics and Materials 130-134 (October 2011): 143–46. http://dx.doi.org/10.4028/www.scientific.net/amm.130-134.143.

Full text

Abstract:

The ABS, motor, Battery, fly wheels, wheel and roller are used to built test bench to measure coordinate control strategy between ABS braking and regenerative braking. The test bench can also be used to simulate engine brake during vehicle deceleration, and ABS control methods. This can reduce development time and cost effectively.

APA, Harvard, Vancouver, ISO, and other styles

20

Fambro, Daniel B., Rodger J. Koppa, Dale L. Picha, and Kay Fitzpatrick. "Driver Braking Performance in Stopping Sight Distance Situations." Transportation Research Record: Journal of the Transportation Research Board 1701, no. 1 (January 2000): 9–16. http://dx.doi.org/10.3141/1701-02.

Full text

Abstract:

Assumed driver braking performance in emergency situations is not consistent in the published literature. A 1955 study stated that in an emergency situation “it is suspected that drivers apply their brakes as hard as possible.” This idea differs from a 1984 report that states drivers will “modulate”their braking to maintain directional control. Thus, additional information is needed about driver braking performance when an unexpected object is in the roadway. In this research driver braking distances and decelerations to both unexpected and anticipated stops were measured. The study design allowed for differences in vehicle handling and driver capabilities associated with antilock braking systems (ABS), wet and dry pavement conditions, and the effects of roadway geometry. Vehicle speeds, braking distances, and deceleration profiles were determined for each braking maneuver. The research results show that ABS result in shorter braking distances by as much as 30 m at 90 km/h. These differences were most noticeable on wet pavements where ABS resulted in better control and shorter braking distances. Braking distances on horizontal curves were slightly longer than on tangent sections; however, they were not large enough to be of practical significance. Maximum deceleration during braking is independent of initial velocity, at least in the range of speeds tested. Differences were noted in individual driver performance in terms of maximum deceleration. Although maximum deceleration was equal to the pavement’s coefficient of friction for some drivers, the average maximum deceleration was about 75 percent of that level. Overall, drivers generated maximum decelerations from 6.9 to 9.1 m/s2. The equivalent constant deceleration also varied among drivers. Based on the 90-km/h data, 90 percent of all drivers without ABS chose equivalent constant decelerations of at least 3.4 m/s2 under wet conditions, and 90 percent of all drivers with ABS chose equivalent constant deceleration of at least 4.7 m/s2 on dry pavements.

APA, Harvard, Vancouver, ISO, and other styles

21

Yang, Tao, and Dan Dan Song. "Simulation Study of Vehicle Brake Stability Control on Turning Lane Based on ABS." Advanced Materials Research 591-593 (November 2012): 1916–19. http://dx.doi.org/10.4028/www.scientific.net/amr.591-593.1916.

Full text

Abstract:

Vehicle under braking in turn condition can easily cause lateral instability because of the centrifugal force. In this paper, the defects of ABS control methods of the vehicle under braking in turn condition were analyzed, a braking force control strategy by the integrated control of ABS and yaw moment control for vehicle cornering is presented. Based on ABS, a yaw moment controller using fuzzy control theory is designed, by controlling yaw moment of vehicle and regulating slip rate of wheels, the dynamic regulation of yaw moment in vehicle braking is realized, therefore, vehicle braking stability on turning lane is improved. A simulation is performed with it during two different conditions: step input and sinusoidal input, the results showed that the transient and steady response based on presented method is better than that of ABS only, and the presented method can effectively control the yaw rate and side slip angle synchronously, achieve good transient and steady response, lighten the burden of the driver and improve vehicle yaw stability.

APA, Harvard, Vancouver, ISO, and other styles

22

YU, Feng, and Jun XIE. "Simulation analysis of efficiency and stability for vehicle’s ABS control on combined steering and braking maneuvers." MATEC Web of Conferences 272 (2019): 01024. http://dx.doi.org/10.1051/matecconf/201927201024.

Full text

Abstract:

Eight degrees of freedom vehicle model was established. Using the method of fuzzy control, the ABS control algorithm was designed based on slip ratio. Simulation analysis was done at speed of 15m/s, 20m/s, 25m/s under turning braking. The results show that the vehicle braking performance and vehicle stability at middle or low speed was improved by using the ABS controller, but qualitative analysis shows that phenomenon of vehicle instability was appeared at high-speed conditions. The turning braking stability under ABS controller was judged quantificationally by the stability judging formula. The results show that the requirements of stability control could not meet with only Anti-lock Braking System.

APA, Harvard, Vancouver, ISO, and other styles

23

bin Peeie, Mohamad Heerwan, Hirohiko Ogino, and Yoshio Yamamoto. "Skid Control of Small Electric Vehicles with In-Wheel Motors (Effect of ABS and Regenerative Brake Timing Control on Emergency Braking)." Applied Mechanics and Materials 789-790 (September 2015): 927–31. http://dx.doi.org/10.4028/www.scientific.net/amm.789-790.927.

Full text

Abstract:

This paper presents an active safety device for skid control of small electric vehicles with in-wheel motors. Due to the space limitation on the driving tire, a mechanical brake system was installed rather than hydraulic brake system. For the same reason, anti-lock brake system (ABS) that is a basic skid control method cannot be installed on the driving tire. During braking on icy road or emergency braking, the tire will be locked and the vehicle is skidding. To prevent tire lock-up and vehicle from skidding, we proposed the combination of ABS and regenerative brake timing control. The hydraulic unit of ABS is installed on the non-driving tire while the in-wheel motors on the driving tire will be an actuator of ABS to control the regenerative braking force. The performance of the ABS and regenerative brake timing control on the emergency braking situation is measured by the simulation. The simulation result shows that the combination of ABS and regenerative brake timing control can prevent tire lock-up and vehicle from skidding.

APA, Harvard, Vancouver, ISO, and other styles

24

Sun, Jinhong, Xiangdang Xue, and Ka Wai Eric Cheng. "Fuzzy Sliding Mode Wheel Slip Ratio Control for Smart Vehicle Anti-Lock Braking System." Energies 12, no. 13 (June 28, 2019): 2501. http://dx.doi.org/10.3390/en12132501.

Full text

Abstract:

With the development of in-wheel technology (IWT), the design of the electric vehicles (EV) is getting much improved. The anti-lock braking system (ABS), which is a safety benchmark for automotive braking, is particularly important. Installing the braking motor at each fixed position of the wheel improves the intelligent control of each wheel. The nonlinear ABS with robustness performance is highly needed during the vehicle’s braking. The anti-lock braking controller (CAB) designed in this paper considered the well-known adhesion force, the resistance force from air and the wheel rolling friction force, which bring the vehicle model closer to the real situation. A sliding mode wheel slip ratio controller (SMWSC) is proposed to yield anti-lock control of wheels with an adaptive sliding surface. The vehicle dynamics model is established and simulated with consideration of different initial braking velocities, different vehicle masses and different road conditions. By comparing the braking effects with various CAB parameters, including stop distance, braking torque and wheel slip ratio, the SMWSC proposed in this paper has superior fast convergence and stability characteristics. Moreover, this SMWSC also has an added road-detection module, which makes the proposed braking controller more intelligent. In addition, the important brain of this proposed ABS controller is the control algorithm, which can be used in all vehicles’ ABS controller design.

APA, Harvard, Vancouver, ISO, and other styles

25

WANG, XIAOKAN, and QIONG WANG. "MODELING AND SIMULATION OF AUTOMOBILE ANTI-LOCK BRAKING SYSTEM BASED ON SIMULINK." Journal of Advanced Manufacturing Systems 11, no. 02 (December 2012): 99–106. http://dx.doi.org/10.1142/s0219686712500084.

Full text

Abstract:

This article establishes the mathematical model of automobile anti-lock braking system (ABS) in the Simulink environment and tracks the research and simulation of the ABS established mathematical model, which is based on the control module with the PID controller. From the simulation curve, we can verify automobile ABS with good braking performance and direction maneuverability.

APA, Harvard, Vancouver, ISO, and other styles

26

Wang, Ya Kun, and Peng Tan. "Precise Mechanics Control and Simulation of Automotive ABS." Applied Mechanics and Materials 214 (November 2012): 817–21. http://dx.doi.org/10.4028/www.scientific.net/amm.214.817.

Full text

Abstract:

The rapid development of computer technology has brought a huge boost to the automotive industry. This paper uses computer technology to carry out simulation studies of automotive anti-lock braking system (ABS), through braking characteristics of the dynamic equations, we establish the simulation model, and get ABS braking distance and time in different roads, and through optimizing the system design simulation, we provide parameters in accordance with the precise control of the anti-lock braking system.

APA, Harvard, Vancouver, ISO, and other styles

27

Kamble, Romit, and Satyajit Patil. "Exploring Magnetorheological Brake-Based Anti-Lock Brake System for Automotive Application." International Journal of Manufacturing, Materials, and Mechanical Engineering 9, no. 4 (October 2019): 17–43. http://dx.doi.org/10.4018/ijmmme.2019100102.

Full text

Abstract:

The present work explores a magnetorheological brake (MRB)-based anti-lock brake system (ABS) proposed for a vehicular application. Because of its quick response time, MRB is being considered as a substitute for the conventional hydraulic brake (CHB), commonly used for road vehicles. ABS is used along with CHB to prevent wheel lockup due to severe braking and thereby maintain the stability of the vehicle. This work envisages ABS for a vehicle using MRB instead of CHB. The braking maneuver for a typical mid-size car with and without ABS is simulated in a MATLAB environment. Both versions, a CHB-based ABS and a MRB-based ABS are considered in simulations. The braking performance in terms of stopping time and stopping distance is estimated. A PID and a Fuzzy controller are proposed for improving the control performance of the brake system. The comparative analysis based on the simulations helps make estimations for MRB-based ABS performance.

APA, Harvard, Vancouver, ISO, and other styles

28

Padovan, J., and P. Padovan. "Modeling Tire Performance During Antilock Braking." Tire Science and Technology 22, no. 3 (July 1, 1994): 182–204. http://dx.doi.org/10.2346/1.2139541.

Full text

Abstract:

Abstract This paper develops an analytical-numerical model of antilock braking system (ABS) cycles, vehicle slowdown dynamics and their concomitant influence on tire tread lug wear. Overall, the model handles the effects of tire slip-friction behavior, brake-slip behavior, vehicle slowdown dynamics including lift and drag, ABS cycling, tire wheel rotation and vibration dynamics, and local tread level thermomechanical-chemical degradation “shear off” of the surface rubber. The results of several benchmark studies are also presented. These demonstrate potential tire wear characteristics under ABS.

APA, Harvard, Vancouver, ISO, and other styles

29

Li, Ju Wei, and Jian Wang. "Study of the Antilock Braking System with Electric Brake Force Distribution." Applied Mechanics and Materials 29-32 (August 2010): 1985–90. http://dx.doi.org/10.4028/www.scientific.net/amm.29-32.1985.

Full text

Abstract:

Antilock braking system (ABS) is a standard equipment for passenger car, it can prevent automobile wheels from locking-up and improve braking performance. Electronic brake force distribution (EBD) can prevent the rear wheels from locking prior to the front wheels, it can automatically adjust the braking force distribution scale among the wheels. In this paper, a vehicle model and tire model are developed, a sliding mode controller is designed for ABS system and a fuzzy controller is designed for EBD system. Dry asphalt road and wet asphalt road are used to simulate the performance of ABS/EBD system. The simulation results show that the control method can make full use of the respective advantages of ABS and EBD systems.

APA, Harvard, Vancouver, ISO, and other styles

30

Adcox, John, Beshah Ayalew, Tim Rhyne, Steve Cron, and Mike Knauff. "Interaction of Anti-lock Braking Systems with Tire Torsional Dynamics." Tire Science and Technology 40, no. 3 (October 1, 2012): 171–85. http://dx.doi.org/10.2346/tire.12.400301.

Full text

Abstract:

ABSTRACT A tire's torsional dynamics couple the responses of wheel/hub inertia to that of the ring/belt inertia. Depending on the effective stiffness, damping, and mass distribution of the tire, the ensuing deflections between the wheel and the ring can cause significant errors in the estimation of the tire's longitudinal slip from wheel speed measurements. However, this remains the established approach for constructing anti-lock braking system (ABS) control algorithms. Under aggressive braking events, the errors introduced by torsional dynamics may significantly affect the ABS algorithm and result in less than optimal braking performance. This article investigates the interaction of tire torsional dynamics and ABS control using a comprehensive system model that incorporates sidewall flexibility, transient and hysteretic tread-ground friction effects, and the dominant dynamics of a hydraulic braking system. It considers a wheel/hub acceleration-based ABS controller that mimics the working steps of a commercial ABS algorithm. Results from multiple sensitivity studies show a strong correlation of stopping distances and ABS control activity with design parameters governing tire/wheel torsional response and the filter cutoff frequency of the wheel acceleration signals used by the controller.

APA, Harvard, Vancouver, ISO, and other styles

31

Li, Xiaohan, Leilei Zhao, Changcheng Zhou, Xue Li, and Hongyan Li. "Pneumatic ABS Modeling and Failure Mode Analysis of Electromagnetic and Control Valves for Commercial Vehicles." Electronics 9, no. 2 (February 12, 2020): 318. http://dx.doi.org/10.3390/electronics9020318.

Full text

Abstract:

A failure of the pneumatic ABS (anti-lock braking system) weakens the braking performance of commercial vehicles. It affects the driving safety of vehicles. There are four typical failure modes that include: the failure of the pilot inlet solenoid valve and pilot exhaust solenoid valve of the pressure regulator, the failure of the series dual-chamber brake valve, and the failure of the relay valve. In order to study the braking performance and the rule of vehicles under the failure modes of the pneumatic ABS, the co-simulation model of the pneumatic ABS of the commercial vehicle was established based on AMESim and Simulink softwares. The gas path subsystem of the pneumatic ABS and the vehicle model were built based on AMESim. The controller was established based on Simulink/Stateflow. The data were transmitted between the AMESim and Simulink software by using the data interface block. The co-simulation model was validated by tests. The results showed that the maximum error of the braking deceleration is 13.51%. The model can simulate the braking process of the vehicle well. Based on this, the four typical failure modes of the pneumatic ABS were simulated, and the influences of different failure modes on the braking ability were analyzed. The influence of failure ratio on braking distance in four modes was obtained. It can be seen from the simulation results that the failure of the pilot inlet solenoid valve and the pilot exhaust solenoid valve of the pressure regulator cause the wheel lock. The failure of the lower chamber of the brake valve and the failure of the relay valve have a great influence on the braking distance.

APA, Harvard, Vancouver, ISO, and other styles

32

Wang, Qing Nian, Shi Xin Song, Shao Kun Li, Shi Qi Fan, and Si Lun Peng. "A Control Strategy of Regenerative Braking System with Motor ABS for In-Wheel-Motor Vehicle." Applied Mechanics and Materials 740 (March 2015): 180–85. http://dx.doi.org/10.4028/www.scientific.net/amm.740.180.

Full text

Abstract:

The electro-mechanical braking system of In-Wheel-Motor vehicle is analyzed by applying vehicle braking stability theory. Considering the properties of composite lectro-mechanical braking system, a regenerative braking system control strategy with ABS function for In-Wheel-Motor vehicle is proposed. In the strategy, the ABS function is achieved by adjust the motor torque. With using the new strategy, simulations are conducted on an in-wheel-motor vehicle model, and the road adhesion coefficient in the simulation is 0.2 and 0.8 respectively. The result shows that the control strategy proposed enhances the braking stability of In-Wheel-Motor vehicle.

APA, Harvard, Vancouver, ISO, and other styles

33

Joon, Chong Woi. "Pre Crash Wheel-Locking Braking System." Applied Mechanics and Materials 663 (October 2014): 175–84. http://dx.doi.org/10.4028/www.scientific.net/amm.663.175.

Full text

Abstract:

Nowadays, most of the passenger cars are equipped with anti-locking brake system (ABS) in order to provide better safety protection to vehicle occupants. Despite its advantages, it has been reported in the public domain that the ABS could be one of the causes in fatal frontal/rollover crashes on dry roads. This paper is first attempting to reveal the shortcomings of ABS that lead to high fatality rate. Then, in order to overcome these ABS shortcomings, a potential system called pre crash wheel-locking braking (PWLB) system is conceptually proposed. The PWLB system works by locking both front and rear wheels simultaneously that based on speed and distance between the leading and the following vehicles. With this PWLB concept it is expected that braking effect during the vehicle crash up to 2.5 meter before reaching to the occupants can be maintained. As a result, it can provide maximum braking force and improve ability to steer to the vehicle before crashing with the leading vehicle.

APA, Harvard, Vancouver, ISO, and other styles

34

Arrigoni, Stefano, Federico Cheli, Paolo Gavardi, and Edoardo Sabbioni. "Influence of Tire Parameters on ABS Performance." Tire Science and Technology 45, no. 2 (April 1, 2017): 121–43. http://dx.doi.org/10.2346/tire.17.450203.

Full text

Abstract:

ABSTRACT The antilock braking system (ABS) is an active control system, which prevents the wheels from locking-up during severe braking. The ABS control cycle rapidly modulates braking pressure at each wheel mainly based on tire peripheral acceleration. Significant wheel speed oscillations and consequent fast variations of tire longitudinal slip are a consequence, which, in turn, produce a corresponding variation of tire longitudinal force according to the ABS control cycle. Clearly, tire characteristics, namely, tire peak friction (regulating maximum vehicle deceleration), longitudinal stiffness, optimal slip ratio, curvature factor (regulating the position of the peak of μ-slip curve and the subsequent drop), and relaxation length (accounting for tire dynamic response) may significantly influence ABS performance. The aim of the present paper is to evaluate the effect of the main tire parameters on ABS performance. This task is, however, very challenging, since tire characteristics are intrinsically related, and the analysis involves interaction between tires, vehicle, and ABS control logic. A methodology based on the hardware-in-the-loop (HiL) technique is used. This approach was selected to overcome limitations of numerical simulations or difficulties related to the execution of on-road experimental tests (repeatability, costs, etc.). The developed HiL test bench includes all the physical elements of the braking system of a vehicle (comprising the ABS control unit) and a 14 degrees of freedom (dofs) vehicle model, which are synchronized by a real-time board. With the developed HiL test bench, a sensitivity analysis was carried out to assess the influence of tire peak friction, longitudinal stiffness, and relaxation length on ABS performance, evaluated in terms of braking distance, mean longitudinal acceleration, and energy distribution.

APA, Harvard, Vancouver, ISO, and other styles

35

Chen, Xiaolei, Zhiyong Dai, Hui Lin, Yanan Qiu, and Xiaogeng Liang. "Asymmetric Barrier Lyapunov Function-Based Wheel Slip Control for Antilock Braking System." International Journal of Aerospace Engineering 2015 (2015): 1–10. http://dx.doi.org/10.1155/2015/917807.

Full text

Abstract:

As an important device of the aircraft landing system, the antilock braking system (ABS) has a function to avoid aircraft wheels self-locking. To deal with the strong nonlinear characteristics, complex nonlinear control schemes are applied in ABS. However, none of existing control schemes focus on the braking operating status, which directly reflects wheels self-locking degree. In this paper, the braking operating status region is divided into three regions: the healthy region, the light slip region, and the deep slip region. An ABLF-based wheel slip controller is proposed for ABS to constrain the braking system operating status in the healthy region and the light slip region. Therefore the ABS will be prevented from operating in the deep slip region. Under the proposed control scheme, self-locking is avoided completely and zero steady state error tracking of the wheel optimal slip ratio is implemented. The Hardware-In-Loop (HIL) experiments have validated the effectiveness of the proposed controller.

APA, Harvard, Vancouver, ISO, and other styles

36

Zulhilmi, I. M., M. H. Peeie, R. I. M. Eiman, I. M. Izhar, and S. M. Asyraf. "Investigation on Vehicle Dynamic Behaviour During Emergency Braking at Different Speed." International Journal of Automotive and Mechanical Engineering 16, no. 1 (March 16, 2019): 6161–72. http://dx.doi.org/10.15282/ijame.16.1.2019.6.0468.

Full text

Abstract:

Safety system of the vehicle can be divided into two main categories; passive and active safety system. The purpose of the passive safety system is to protect the occupant during an accident, while active safety system allows the vehicle to be manoeuvred to avoid any collision. Although active safety system can prevent the accident, in a critical situation such as emergency braking, the dynamic behaviour of the vehicle changes abruptly, and the vehicle becomes unstable. The objective of this study is to analyse the dynamic behaviour of the vehicle during emergency braking with and without anti-lock braking system (ABS). In this study, the dynamic behaviour of the vehicle is observed by the simulation model that has been developed in the MATLAB-Simulink. The analysis vehicle model is Universiti Malaysia Pahang (UMP) test car, model Proton Persona. During braking, when ABS control unit detect the wheel is to lock-up, the hydraulic control unit closed the hydraulic valve to release the brake pad on the wheel. This allows the wheel to spin intermittently during braking. From the simulation results, when ABS is not applied to the vehicle, the front tires were lock-up and the vehicle become skidding. However, when ABS is applied, the speed of all tires decreased gradually and the vehicle is not skidding. The simulation results also show that the stopping distance with ABS is improved 28% compared without ABS.

APA, Harvard, Vancouver, ISO, and other styles

37

J, Manikandan, and Abdul Kalam B. "An Antilock-Braking Systems (ABS) Control: A Technical Review." International Journal of Psychosocial Rehabilitation 23, no. 4 (July 20, 2019): 288–99. http://dx.doi.org/10.37200/ijpr/v23i4/pr190187.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Anderson, Jeffery R., John Adcox, Beshah Ayalew, Mike Knauff, Tim Rhyne, and Steve Cron. "Interaction of a Slip-Based Antilock Braking System with Tire Torsional Dynamics." Tire Science and Technology 43, no. 3 (September 1, 2015): 182–94. http://dx.doi.org/10.2346/tire.15.430303.

Full text

Abstract:

ABSTRACT This paper presents simulation and experimental results that outline the interaction between a tire's torsional dynamic properties and antilock braking system (ABS) during a hard braking event. Previous work has shown the importance of the coupled dynamics of the tire's belt, sidewall, and wheel/hub assembly on braking performance for a wheel acceleration-based ABS controller. This work presents findings based on a proprietary slip-based ABS controller. A comprehensive system model including tire torsional dynamics, dynamics of the tread–ground friction (LuGre friction model), and dominant brake system hydraulic dynamics was developed for simulation studies on this slip-based controller. Results from key sensitivity studies of tire torsional parameters are presented along with experimental results obtained on a quarter car braking test rig. In this work, it was found that within a reasonable tire design space (with respect to tire torsional properties), the ABS algorithm tested was extremely robust to changing these parameters. The main conclusion of this result is that when a consumer replaces his or her tires with different (than original equipment) tires, there should be little effect on braking performance.

APA, Harvard, Vancouver, ISO, and other styles

39

Hartikainen, Lassi, Frank Petry, and Stephan Westermann. "Longitudinal wheel slip during ABS braking." Vehicle System Dynamics 53, no. 2 (December 24, 2014): 237–55. http://dx.doi.org/10.1080/00423114.2014.991332.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Zhang, Xi, and Hui Lin. "Backstepping Fuzzy Sliding Mode Control for the Antiskid Braking System of Unmanned Aerial Vehicles." Electronics 9, no. 10 (October 20, 2020): 1731. http://dx.doi.org/10.3390/electronics9101731.

Full text

Abstract:

This paper proposes a backstepping fuzzy sliding mode control method for the antiskid braking system (ABS) of unmanned aerial vehicles (UAVs). First, the longitudinal dynamic model of the UAV braking system is established and combined with the model of the electromechanical actuator (EMA), based on reasonable simplification. Subsequently, to overcome the higher-order nonlinearity of the braking system and ensure the lateral stability of the UAV during the braking process, an ABS controller is designed using the barrier Lyapunov function to ensure that the slip ratio can track the reference value without exceeding the preset range. Then, a power fast terminal sliding mode control algorithm is adopted to realize high-performance braking pressure control, which is required in the ABS controller, and a fuzzy corrector is established to improve the dynamic adaptation of the EMA controller in different braking pressure ranges. The experimental results show that the proposed braking pressure control strategy can improve the servo performance of the EMA, and the hardware in loop (HIL) experimental results indicate that the proposed slip ratio control strategy demonstrates a satisfactory performance in terms of stability under various runway conditions.

APA, Harvard, Vancouver, ISO, and other styles

41

Zhang, J., D. Kong, L. Chen, and X. Chen. "Optimization of control strategy for regenerative braking of an electrified bus equipped with an anti-lock braking system." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 226, no. 4 (October 19, 2011): 494–506. http://dx.doi.org/10.1177/0954407011422463.

Full text

Abstract:

This paper mainly focuses on the regenerative braking control of an electrified bus equipped with an anti-lock braking system (ABS). The regenerative braking works simultaneously with a pneumatic ABS, thus liberating the remaining energy of the vehicle while its wheels tend to lock under an extreme brake circumstance. Based on one representative pneumatic ABS strategy and optimum control theory, the optimization for regenerative braking control is proposed, in which the frictional and regenerative brake forces are controlled integrally to obtain maximal available adhesion. The simulation results indicate that brake stability and performance on different roads profit from the optimization. Hardware-in-the-loop (HIL) tests are accomplished on the pneumatic braking system of an electrified bus. HIL tests validate the results of simulation and guarantee the advantage and reliability of the optimization. The adaptability of optimization to hardware and software of the brake controller is also ensured. The field in which further research could be carried out is proposed.

APA, Harvard, Vancouver, ISO, and other styles

42

Yang, Yang, Guangzheng Li, and Quanrang Zhang. "A Pressure-Coordinated Control for Vehicle Electro-Hydraulic Braking Systems." Energies 11, no. 9 (September 4, 2018): 2336. http://dx.doi.org/10.3390/en11092336.

Full text

Abstract:

The characteristics of electro-hydraulic braking systems have a direct influence on the fuel consumption, emissions, brake safety, and ride comfort of hybrid electric vehicles. In order to realize efficient energy recovery for ensuring braking safety and considering that the existing electro-hydraulic braking pressure control systems have control complexity disadvantages and functional limitations, this study considers the front and rear dual-motor-driven hybrid electric vehicle as the prototype and based on antilock brake system (ABS) hardware, proposes a new braking pressure coordinated control system with electro-hydraulic braking function and developed a corresponding control strategy in order to realize efficient energy recovery and ensure braking safety, while considering the disadvantages of control complexity and functional limitations of existing electro-hydraulic system. The system satisfies the pressure coordinated control requirements of conventional braking, regenerative braking, and ABS braking. The vehicle dynamics model based on braking control strategy and pressure coordinated control system is established, and thereafter, the performance simulation of the vehicle-based pressure coordinated control system under typical braking conditions is carried out to validate the performance of the proposed system and control strategy. The simulation results show that the braking energy recovery rates under three different conditions—variable braking intensity, constant braking intensity and integrated braking model—are 66%, 55% and 47%. The battery state of charge (SOC) recovery rates are 0.37%, 0.31% and 0.36%. This proves that the motor can recover the reduced energy of the vehicle during braking and provide an appropriate braking force. It realizes the ABS control function and has good dynamic response and braking pressure control accuracy. The simulation results illustrate the effectiveness and feasibility of the program which lays the foundation for further design and optimization of the new regenerative braking system.

APA, Harvard, Vancouver, ISO, and other styles

43

He, Ji Du, Yong Jun Zheng, Yu Tan, Gang Wu, and Zhao Feng Liu. "Research on Bench Test System for Vehicle ABS Performance." Applied Mechanics and Materials 321-324 (June 2013): 1633–36. http://dx.doi.org/10.4028/www.scientific.net/amm.321-324.1633.

Full text

Abstract:

According to the ideal wheel speed change curve during the ABS braking and the vehicle inertia electromechanical mixed analog principle, the bench testing system for vehicle ABS performance was designed. In order to improve the reliability of the wheel velocity detection and optimize the systematic structure, the method of using the free roller to detect wheel speed and the regenerative braking energy compensation of asynchronous motor were proposed. The results show that designed test bench system can achieve ABS performance testing.

APA, Harvard, Vancouver, ISO, and other styles

44

Li, Jian Hua, Chuan Xue Song, and Li Qiang Jin. "Co-Simulation of Composite ABS Control for In-Wheel Motor Drive Electric Vehicle Based on Threshold Control Algorithm." Advanced Materials Research 690-693 (May 2013): 3036–41. http://dx.doi.org/10.4028/www.scientific.net/amr.690-693.3036.

Full text

Abstract:

According to the brake characteristics of in-wheel motor drive electric vehicles, and basing on threshold control method, we describe one kind of composite ABS control theory about electric motor ABS combined with hydraulic friction ABS, and establish a co-simulation vehicle model. The composite ABS control method is a control method that the electric motor ABS control works together with the hydraulic ABS control. Both of the two modes of ABS control logic were using logic threshold control method. The model of the in-wheel motor drive electric vehicle was established with AMESim, and the model of the composite ABS controller was built with Simulink. The control performance of composite ABS in different braking strength and different road friction coefficients is simulated. Co-simulation was carried out. Through analysis, a number of parameters curves were obtained. It proves that the composite ABS control method for in-wheel motor drive electric vehicles can effectively control the slip rate, and ensure braking stability.

APA, Harvard, Vancouver, ISO, and other styles

45

Yin, Guodong, and XianJian Jin. "Cooperative Control of Regenerative Braking and Antilock Braking for a Hybrid Electric Vehicle." Mathematical Problems in Engineering 2013 (2013): 1–9. http://dx.doi.org/10.1155/2013/890427.

Full text

Abstract:

A new cooperative braking control strategy (CBCS) is proposed for a parallel hybrid electric vehicle (HEV) with both a regenerative braking system and an antilock braking system (ABS) to achieve improved braking performance and energy regeneration. The braking system of the vehicle is based on a new method of HEV braking torque distribution that makes the antilock braking system work together with the regenerative braking system harmoniously. In the cooperative braking control strategy, a sliding mode controller (SMC) for ABS is designed to maintain the wheel slip within an optimal range by adjusting the hydraulic braking torque continuously; to reduce the chattering in SMC, a boundary-layer method with moderate tuning of a saturation function is also investigated; based on the wheel slip ratio, battery state of charge (SOC), and the motor speed, a fuzzy logic control strategy (FLC) is applied to adjust the regenerative braking torque dynamically. In order to evaluate the performance of the cooperative braking control strategy, the braking system model of a hybrid electric vehicle is built in MATLAB/SIMULINK. It is found from the simulation that the cooperative braking control strategy suggested in this paper provides satisfactory braking performance, passenger comfort, and high regenerative efficiency.

APA, Harvard, Vancouver, ISO, and other styles

46

Yan, Shi Rong, and Song Jun Lu. "Study on Integration Control of Air Suspension and ABS." Advanced Materials Research 139-141 (October 2010): 2626–30. http://dx.doi.org/10.4028/www.scientific.net/amr.139-141.2626.

Full text

Abstract:

In order to get good car rideability, the electronic air suspensions(EAS) are now used in some advanced automotives. Although ABS systems are used in automotives for a long time, in some limit cases such as cornering at high speeds, cars may be still in great dangerous states. It is considered that if electronic air suspensions(EAS) can be adjusted with ABS during some extreme conditions, the cars may become safer. To investigate this possibility and then find out a specific control scheme, some research work is done in the paper. The research work begins from the dynamic analysis for cars with EAS and ABS both, and then based on it an integration control scheme for EAS and ABS is put forward. By means of Matlab/Simulink simulation study, it is found that the braking performances such as braking distance, braking deceleration, and the car vertical acceleration are improved obviously with the integration control technique for both of EAS and ABS during high speed cornering. Therefore the integration control method developed here can work well and improve the car performances obviously.

APA, Harvard, Vancouver, ISO, and other styles

47

Zhang, Lei, En Guo Dong, and Jie Xun Lou. "Conjoint Simulation of Active Suspension and ABS." Applied Mechanics and Materials 494-495 (February 2014): 155–58. http://dx.doi.org/10.4028/www.scientific.net/amm.494-495.155.

Full text

Abstract:

A conjoint simulation of suspension system and brake system is proposed based on vehicle braking performance and ride stability. A half car simulation model is built applying the software of MATLAB in which the dynamic load is used to control the active force for suspension system and adjust parameter value of ABS (Anti-lock brake system). The suspension system and ABS construction of the half car simulation model is illustrated in detail. Using the simulation model, the braking distance, the stroke for suspension and the pitch angle of body are measured in three status which include the individually control for active suspension, the individually control for ABS and the integration control respectively. The simulation data show that the integral control method synchronously ensures braking stability and riding stability.

APA, Harvard, Vancouver, ISO, and other styles

48

Nemah, Mohammad Najeh. "Modelling and Development of Linear and Nonlinear Intelligent Controllers for Anti-lock Braking Systems (ABS)." Journal of University of Babylon for Engineering Sciences 26, no. 3 (February 1, 2018): 1–12. http://dx.doi.org/10.29196/jub.v26i3.597.

Full text

Abstract:

Antilock braking systems (ABS) are utilized as a part of advanced autos to keep the vehicle’s wheels from deadlocking when the brakes are connected. The control performance of ABS utilizing linear and nonlinear controls is cleared up in this research. In order to design the control system of ABS a nonlinear dynamic model of the antilock braking systems is derived relying upon its physical system. The dynamic model contains set of equations valid for simulation and control of the mechanical framework. Two different controllers technique is proposed to control the behaviors of ABS. The first one utilized the PID controller with linearized technique around specific point to control the nonlinear system, while the second one used the nonlinear discrete time controller to control the nonlinear mathematical model directly. This investigation contributes to more additional information for the simulation of the two controllers, and demonstrates a clear and reasonable advantage of the classical PID controller on the nonlinear discrete time controller in control the antilock braking system.

APA, Harvard, Vancouver, ISO, and other styles

49

Koylu, Hakan, and Ali Cinar. "Development of control algorithm for ABS–suspension integration to reduce rotational acceleration oscillations of wheel." Transactions of the Institute of Measurement and Control 40, no. 3 (November 13, 2016): 1018–34. http://dx.doi.org/10.1177/0142331216677318.

Full text

Abstract:

In this study, we aimed to obtain smoother wheel rotational acceleration during braking with an activated anti-lock brake system (ABS). This produces effective and easily controlled rotational acceleration of a wheel by an ABS control unit. For this, the wheel load is changed by considering the interaction between the brake pressure change rates and rotational acceleration of the wheel. This is provided by means of the control strategy developed in this study. The rules of the control strategy are based on ABS test results. These tests are conducted with soft, medium-hard and hard dampers on wet and slippery road surfaces. Therefore, the control strategy changes the wheel load by setting the damper stage according to agreement between brake pressure and wheel rotational acceleration. Here, the control strategy constantly applies the damping force of the damper providing the shortest braking distance under wet or slippery road conditions. All results show that the control strategy considerably improves wheel rotational acceleration oscillations during braking with an activated ABS.

APA, Harvard, Vancouver, ISO, and other styles

50

Xuan, Sheng Yi, Chuan Xue Song, and Guang Wei Meng. "ABS Sliding Mode Variable Structure Control Based on Index Reaching Law." Advanced Materials Research 915-916 (April 2014): 439–43. http://dx.doi.org/10.4028/www.scientific.net/amr.915-916.439.

Full text

Abstract:

ABS(antilock brake system) is one of the most important active safety technology for modern vehicles which could enhance vehicle active safety. In this paper, an improved sliding mode control method based on reaching law has been proposed to solve the vibration problem in traditional sliding mode control. The ABS control strategy has been designed based on the sliding mode variable structure control. On this basis, the ABS single wheel depending on control strategy has been designed to ensure the braking stability. By hardware-in-loop simulation, the results demonstrate that ABS sliding mode variable structure control could enhance braking stability performance and improve the control effect on high friction and low friction road.

APA, Harvard, Vancouver, ISO, and other styles

Journal articles on the topic 'ABS braking'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles