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International Standard Serial Number:
ISSN 1001-4551
Sponsor:
Zhejiang University;
Zhejiang Machinery and Electrical Group
Edited by:
Editorial of Journal of Mechanical & Electrical Engineering
Chief Editor:
ZHAO Qun
Vice Chief Editor:
TANG ren-zhong,
LUO Xiang-yang
Tel:
86-571-87041360,87239525
Fax:
86-571-87239571
Add:
No.9 Gaoguannong,Daxue Road,Hangzhou,China
P.C:
310009
E-mail:
meem_contribute@163.com
Abstract: In order to solve the problem of response lag existing in the commonly assembled hydraulic braking system of vehicles, the design modeling, simulation analysis and experimental test of the matched electro-mechanical brake (EMB) were carried out by taking a target vehicle in the laboratory as an example. Firstly, the braking clearance and the maximum braking force were determined according to the vehicle parameters and the braking efficiency was checked. The selection of "motor + planetary gear reducer + ball screw" was used for combination design. CATIA was used for 3D modeling of EMB components, and ANSYS/Workbench was used for mechanical performance simulation analysis of brake caliper body. Then, according to the mechanical and geometric relationship between the EMB components, the corresponding mathematical models were established respectively. After establishing the overall EMB simulation model in MATLAB/Simulink, the simulation of the motor speed characteristics, the blocking torque characteristics and the maximum clamping force of EMB was completed. Finally, an experimental platform was built to verify the simulation results. The research results show that the maximum stress of EMB is 34.87% of the safety limit, the elimination speed of brake gap is increased by 42.31%, and the time to reach the maximum brake clamping force is reduced by 45.82%, which significantly improves the braking performance of the target vehicle.
Key words: electro-mechanical brake(EMB); motor+planetary gear reducer+ball screw; brake clearance; maximum clamping force; MATLAB/Simulink; brake caliper body
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