Design and Control of an Upper-Wedge-Type Electronic Brake

Jo, Chihoon; Lee, S.-M.; Song, Hanlim; Cho, Y.-S.; Kim, I.; Hyun, Dongyoon; Kim, H.-S.

doi:10.1243/09544070jauto1268

Cited by 32 publications

(29 citation statements)

References 7 publications

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“…After the motor enters the block state, the motor torque is first converted into force by ball screw mechanism, and then the wedge-shaped self-amplifying mechanism enlarges the force to slow the wheel down [26,29]. There are two types of EWB: upper wedge and lower wedge, as shown in Figure 6 [30]. In the upper wedge structure, the braking force is obtained by inserting the upper wedge, the direction of the ball screw force is the same as the friction force that is applied to the brake disc, and the friction force pulls the wedge block.…”

Section: Electro-wedge Brakementioning

confidence: 99%

“…In summary, the upper wedge is more practical, and most of the research is carried around it. There are two types of EWB: upper wedge and lower wedge, as shown in Figure 6 [30]. In the upper wedge structure, the braking force is obtained by inserting the upper wedge, the direction of the ball screw force is the same as the friction force that is applied to the brake disc, and the friction force pulls the wedge block.…”

Section: Electro-wedge Brakementioning

confidence: 99%

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Review on the Development, Control Method and Application Prospect of Brake-by-Wire Actuator

Gong

Yan

et al. 2020

Actuators

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This paper reviews and summarizes the development, key technologies, and application of brake-by-wire (BBW) actuators. BBW is the technology orientation of future vehicle brake system. The main feature of BBW is to replace some of the mechanical and hydraulic components of traditional brake system with electronic control components, and use cables and wires to transmit energy and signals. BBW actuators have outstanding advantages, such as fast response, accurate control, and compact structure. They are easy to integrate with active safety functions and they are easily matched with the regenerative braking systems of electric vehicle. First, this paper summarizes the classification, characteristics, performance, and architecture of BBW actuators. Subsequently, the braking process regulation of vehicle is considered to be the main target, which is summarized from two aspects of actuator regulation and braking force distribution. The state estimation algorithm and control algorithm applied to these actuators are summarized and analyzed, and the development trend, challenges, and schemes of the braking force distribution are proposed. The development and research trend of braking force match strategies between the regenerative brake system and BBW system are also analyzed and summarized. The further electrification and intelligence of vehicle demand BBW's braking force control method and distribution method must have higher control accuracy, stronger robustness, and wider adaptability, and the effects on braking comfort and handling stability must be further discussed.Actuators 2020, 9, 15 2 of 24 new features [2,3]. The additional functions, such as ABS and ESP, require additional devices, such as high-speed solenoid valves, oil return pumps, and return lines. Therefore, the structure of hydraulic brake system is becoming increasingly complex, and the maintenance is also becoming more and more difficult [4,5]. At present, new energy vehicles, such as electric vehicles (EV), hybrid electric vehicles (HEV), and fuel cell electric vehicles (FCEV), are developing rapidly and are highly concerned by major automotive manufacturers. However, most electric vehicles still use hydraulic brake system. On the one hand, the electric vehicles cannot use vacuum boosters to provide auxiliary force. The electric hydraulic pump must first be used to increase the hydraulic pressure, and then delivers the high pressure to each wheel. The electric energy needs to be converted and then transmitted multiple times in this process, so the energy utilization efficiency is not high, and there is the potential danger of brake fluid leakage. On the other hand, the hydraulic brake system cannot accurately and independently regulate the braking force, so it cannot be well matched with the regenerative brake system of EV and HEV [6].Actuators 2020, 9, 15 2 of 24 hydraulic brake system is becoming increasingly complex, and the maintenance is also becoming more and more difficult [4,5]. At present, new energy vehicles, such as electric vehicles (EV)...

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Section: Electro-wedge Brakementioning

confidence: 99%

Section: Electro-wedge Brakementioning

confidence: 99%

Review on the Development, Control Method and Application Prospect of Brake-by-Wire Actuator

Gong

Yan

et al. 2020

Actuators

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“…The EWB that is used in this study generates a clamping force by using the selfreinforcing effect on the screw and wedge. This self-reinforcing effect can provide the much braking force with small actuator power [5]. The hydraulic brake of the rear wheels operates as follows: when a driver steps on the pedal and pushes the piston of the master cylinder, a pressure is formed in the master cylinder.…”

Section: Regenerative Braking Systemmentioning

confidence: 99%

Development of Regenerative Braking Co-operative Control System for Automatic Transmission-based Hybrid Electric Vehicle using Electronic Wedge Brake

Bak

et al. 2013

WEVJ

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This research proposes a regenerative braking co-operative control system for the automatic transmission (AT)-based hybrid electric vehicle (HEV). The brake system of the subject HEV consists of the regenerative braking and the electronic wedge brake (EWB) friction braking for the front wheel, and the hydraulic friction braking for the rear wheel. A regenerative braking co-operative control algorithm is suggested for the regenerative braking and friction braking, which distributes the braking torque according to the driver's demand. A vehicle test was performed to evaluate the proposed braking system and cooperative control algorithm.

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“…Different brake-by-wire systems, including electrohydraulic brake (EHB) systems, electromechanical brake (EMB) systems, electronic wedge brake (EWB) systems and distributed electrohydraulic brake (DEHB) systems have been developed and reported in the literature. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] The most popular and widely used type of brakeby-wire system is the EHB system. This system is a combination of an electrical component and a hydraulic component.…”

Section: Introductionmentioning

confidence: 99%

Design and optimization of a cam-actuated electrohydraulic brake system

Durali

Khajepour

Jeon

2017

Proceedings of the Institution of Mechanical Engineers, Part D:

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Although different types of brake-by-wire mechanism including electrohydraulic brakes, electromechanical brakes, electronic wedge brakes and distributed electrohydraulic brakes have been developed in the past two decades, there is still an increasing demand for further improvement and also for development of new brake mechanisms in the automotive industry because of the escalating requirements for higher safety and better performance. This paper proposes a novel brake-by-wire system based on the cam actuation mechanism. The proposed cam-actuated electrohydraulic brake system is a combination of an electrical component, a mechanical component and a hydraulic component. The unique feature of the proposed cam-actuated electrohydraulic brake system is that the characteristics of the motor torque amplification can be optimized by careful design of the cam shape. The overall structure of the cam-actuated electrohydraulic brake system is described, and the dynamic model of the system is developed. Optimum design of the camactuated electrohydraulic brake system is obtained by multi-objective optimization, and the obtained simulation results are discussed. The compactness and the self-contained characteristics of the design enable the brake system to be installed on each wheel, allowing fully independent control of each wheel for better stability control.

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Design and Control of an Upper-Wedge-Type Electronic Brake

Cited by 32 publications

References 7 publications

Review on the Development, Control Method and Application Prospect of Brake-by-Wire Actuator

Review on the Development, Control Method and Application Prospect of Brake-by-Wire Actuator

Development of Regenerative Braking Co-operative Control System for Automatic Transmission-based Hybrid Electric Vehicle using Electronic Wedge Brake

Design and optimization of a cam-actuated electrohydraulic brake system

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