Research on a novel electro-hydraulic brake system and pedal feel control strategy

Ma, Chengcheng; Xuan-yao, Wang; Xu, Tongliang; Wang, Qianqian; Feng, Pingfa

doi:10.1177/09544070221096185

Cited by 4 publications

(2 citation statements)

References 24 publications

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“…The braking principle of the electro-hydraulic braking system is as follows: when the brake pedal is pressed down [10,11], the pedal will push the actuator to move at the same time, and the pedal displacement sensor integrated into the brake pedal is inputted into the controller of the electro-hydraulic braking system according to the displacement signal of the pedal movement [12]. When receiving the signal from the displacement sensor, according to the driver's intention to brake, the controller carries out a specific rotation through the system's motor, which drives the worm gear movement.…”

Section: Electro-hydraulic Brake System Functionmentioning

confidence: 99%

Functional Model of an Automatic Vehicle Hold Based on an Electro-Hydraulic Braking System

Zhou,

Huang,

Liu

et al. 2023

WEVJ

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The algorithm function designed in this paper can make a car maintain stability during automatic vehicle hold through the model input of multi-level target fluid pressure combined with slope judgment modules of different levels after the automatic vehicle hold software works. At the same time, a complete parking function module is designed, which can monitor the whole parking process in real time. Through the design of this function, the functional diversity of the electro-hydraulic braking system can be increased. When judging that the driver intends to start, the automatic vehicle hold system will automatically release the fluid pressure according to the opening of the accelerator pedal pressed by the driver so that the vehicle does not happen to brake when the vehicle starts in the slippery slope condition. Finally, real vehicle verification proves that the function can effectively meet the parking requirements and start on the flat and on a ramp. Also, it can effectively control the vehicle according to the driver’s driving intention.

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Section: Electro-hydraulic Brake System Functionmentioning

confidence: 99%

Functional Model of an Automatic Vehicle Hold Based on an Electro-Hydraulic Braking System

Zhou,

Huang,

Liu

et al. 2023

WEVJ

View full text Add to dashboard Cite

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“…Ma et al put forward a control strategy for the controlling of the wheel cylinder pressure and a pedal displacement estimation method. The proposed electro-hydraulic brake system had fast pressure response speed and quick pressure tracking accuracy [12]. There are also some research to use intelligent methods to identify the braking intention to more complex operating conditions.…”

Section: Introductionmentioning

confidence: 99%

Braking Intention Identification Strategy of Electric Loader Based on Fuzzy Control

Ye,

Wu,

Lin

2023

Applied Sciences

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As a widely-used construction machinery, the electric loader has the potential to recover braking energy due to its large mass and frequent starts and stops. Identifying braking intention accurately is the foundation of braking energy recovery. The typical braking condition of an electric loader is analyzed; the braking intention is divided into sliding brake, mild braking, moderate braking, and emergency braking. A large number of braking data were collected under different braking intentions, which are used as the basis for fuzzy control variable partitioning, fuzzy controller parameter setting and fuzzy control rule formulation. The control strategies of deceleration intention identification based on accelerator pedal, braking intention identification based on brake pedal and sliding brake intention identification are proposed in this paper, respectively. This paper takes the hydraulic brake pressure as a feedback parameter, even if there is hysteresis or failure based on the intention of pedal identification, the system can still provide sufficient braking strength to ensure the braking safety. The AMESim(R12)-Matlab/Simulink co-simulation model and prototype are built to verify the feasibility of the control strategy under different braking intention identification. The results show that the braking strength under stronger braking intention can satisfy the braking demand whether at a speed of 2 m/s or 12 m/s, which ensures the safety of emergency braking, and the electric loader can provide stable braking strength under different braking intention and different speed. This has good braking stability.

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Braking reconstruction control for fault-tolerance in electro-mechanical brake actuator failures

Wu,

Wang,

Rong

et al. 2024

Proceedings of the Institution of Mechanical Engineers, Part D:

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Electro-mechanical brake (EMB) has been recognized as prospective braking system for electric vehicles. However, the safety issues associated with actuator failures have become the main bottleneck restricting its application. Taking other healthy actuators as redundant resources and establishing controller to reconstruct the braking force after braking failures is the main technical approach for improving EMB fault-tolerance. After literature review, the braking reconstruction control in previous studies are dedicated to a specific failure mode, such as single actuator failure, and the universality of the previous braking reconstruction methods requires further verifications. To solve that, an electric bus equipped with EMB was taken as carrier to further study the optimal braking reconstruction scheme. Specifically, an overall control architecture is presented, and the braking failure modes under the multiple factors are analyzed firstly. Subsequently, the braking reconstruction rules are built to regulate the braking force on remaining and healthy actuators upon braking failure modes. Furthermore, the [Formula: see text] algorithm is introduced to decide the reconstructed braking force according to the vehicle motions. Finally, the co-simulation analyses and hardware-in-the-loop (HIL) tests are carried out to evaluate the effectiveness of the braking reconstruction control in EMB actuator failures. The main results indicated that the braking reconstruction is dynamically adjusted by the [Formula: see text] controller according to vehicle dynamics, and the proposed braking reconstruction control achieved the expected effects in the above conditions.

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Research on a novel electro-hydraulic brake system and pedal feel control strategy

Cited by 4 publications

References 24 publications

Functional Model of an Automatic Vehicle Hold Based on an Electro-Hydraulic Braking System

Functional Model of an Automatic Vehicle Hold Based on an Electro-Hydraulic Braking System

Braking Intention Identification Strategy of Electric Loader Based on Fuzzy Control

Braking reconstruction control for fault-tolerance in electro-mechanical brake actuator failures

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