Research on Compensation Redundancy Control for Basic Force Boosting Failure of Electro-Booster Brake System

Zhao, Jian; Chen, Zhicheng; Zhu, Bing; Wu, Jian

doi:10.4271/2020-01-0216

Cited by 3 publications

(1 citation statement)

References 13 publications

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“…1–3 Due to the absence of vacuum sources for electric vehicle, the vacuum booster is replaced by electronic brake boosting system (EBB). 4–5 It can produce the brake power through the power motor to push the main cylinder, unlike the traditional vacuum booster that relies on the engine to provide power. This boosting method can not only ensure the vehicle’s safety and endurance, 6–7 but also provide excellent brake feeling for different drivers by different power assist characteristics.…”

Section: Introductionmentioning

confidence: 99%

Variable transmission ratio strategy for improving brake feeling based on driver’s target braking strength

Shi

Wang

Chen

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part D:

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Due to the absence of vacuum sources for electric vehicle, the vacuum booster is replaced by electronic brake boosting (EBB) system. In order to improve the driver’s brake feeling based on EBB, this work fully exploits the flexible and variable power-assisted characteristics, and designs different transmission ratios according to the driver’s target braking strength. To identify the driver’s braking strength, an improved radial basis function (IRBF) neural network, combining self-organization method and supervised learning method, is proposed to establish the relationship between the driver’s braking strength and the characteristic parameters. Based on this, the variable transmission ratio strategy is designed, and its main optimized parameters are optimized by means of multi-objective optimization algorithm to provide the driver with a satisfactory brake feeling. The strategies under fixed and variable transmission ratios are simulated and analyzed in low-speed with gentle-brake and high-speed with emergency-brake. The simulation results show that, compared with the fixed transmission ratio, the proposed variable transmission ratio shows excellent performances in both brake feeling and brake safety.

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Section: Introductionmentioning

confidence: 99%

Variable transmission ratio strategy for improving brake feeling based on driver’s target braking strength

Shi

Wang

Chen

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part D:

View full text Add to dashboard Cite

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Variable Servo Characteristic Brake System Matching and Implementing Method Based on Driving Style Identification

Chen

Zhu

Zhao

et al. 2023

IEEE Trans. Transp. Electrific.

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Accurate Pressure Control Based on Driver Braking Intention Identification for a Novel Integrated Braking System

Zhu¹,

Zhang²,

Zhao³

et al. 2021

SAE Int. J. Adv. & Curr. Prac. in Mobility

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<div class="section abstract"><div class="htmlview paragraph">With the development of intelligent and electric vehicles, higher requirements are put forward for the active braking and regenerative braking ability of the braking system. The traditional braking system equipped with vacuum booster has difficulty meeting the demand, therefore it has gradually been replaced by the integrated braking system. In this paper, a novel Integrated Braking System (IBS) is presented, which mainly contains a pedal feel simulator, a permanent magnet synchronous motor (PMSM), a series of transmission mechanisms, and the hydraulic control unit. As an integrative system of mechanics-electronics-hydraulics, the IBS has complex nonlinear characteristics, which challenge the accurate pressure control. Furthermore, it is a completely decoupled braking system, the pedal force doesn’t participate in pressure-building, so it is necessary to precisely identify driver’s braking intention. To improve the control accuracy of the system, this paper proposed a novel pressure control strategy based on driver braking intention identification. Firstly, the structure and working principle of the novel integrated braking system was introduced. Secondly, the driver's braking intention identification strategy was designed. Thirdly, Considering the nonlinear and dynamic characteristics of the system, a cascade closed-loop control strategy including a pressure loop by the feedforward-feedback method, a position loop by the sliding-mode control method, and current loop with friction compensation was proposed. Finally, based on dSPACE products, a hardware-in-the-loop (HiL) experimental bench was built for algorithm verification. The HiL experiment results show that the pressure control strategy has the advantages of accurate response, the braking system pressure follows the driver's expected pressure well.</div></div>

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Research on Compensation Redundancy Control for Basic Force Boosting Failure of Electro-Booster Brake System

Cited by 3 publications

References 13 publications

Variable transmission ratio strategy for improving brake feeling based on driver’s target braking strength

Variable transmission ratio strategy for improving brake feeling based on driver’s target braking strength

Variable Servo Characteristic Brake System Matching and Implementing Method Based on Driving Style Identification

Accurate Pressure Control Based on Driver Braking Intention Identification for a Novel Integrated Braking System

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