| DESIGN AND VALIDATION OF AN ELECTRO-HYDRAULIC BRAKE SYSTEM USING HARDWARE-IN-THE-LOOP REAL-TIME SIMULATION |
| Jiawang Yong1, Feng Gao1, Nenggen Ding1, Yuping He4 |
1Beihang University
4University of Ontario Institute of Technology |
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| ABSTRACT |
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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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