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International Journal of Automotive Technology > Volume 18(4); 2017 > Article
International Journal of Automotive Technology 2017;18(4): 603-612.
doi: https://doi.org/10.1007/s12239-017-0060-2
Jiawang Yong1, Feng Gao1, Nenggen Ding1, Yuping He4
1Beihang University
4University of Ontario Institute of Technology
This paper presents a novel electric booster (E-booster) that exibits superior performance advantages over traditional vacuum boosters. The proposed E-booster, consisting of an electric motor and a ball screw assembly, is designed for electro-hydraulic brake (EHB) systems to meet relevant requirements for electric vehicles and active safety technologies. A mathematical model for an EHB system is generated to determine the desired values of the parameters for the E-booster prototype using numerical simulation in MATLAB. Simulation results of the EHB system with the virtual E-booster demonstrate the feasibility and effectiveness of the innovative technique. Built upon the results derived from the numerical simualtions, an integrated algorithm based on the Kalman filter and a sliding mode control technique is designed to control the E-booster motor and to implement the brake booster function. A hardware-in-the-loop (HIL) real-time simulation system equipped with the E-booster prototype is developed. HIL real-time simulations are conducted to evaluate the proposed algorithm. The HIL real-time simulation results demonstrate that the proposed algorithm generates booster brake forces fast, and forces the ball nut to track the push rod well to ensure comfortable brake pedal feel.
Key Words: Electric booster, Electro-hydralic brake, Sliding mode control, Motor control, Pedal feel, Real-time simulation
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