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A New Design of Main Cylinder Electric Booster for Brake-by-Wire System

[+] Author Affiliations
Danish Ali Shah, Liangyao Yu, Xiaohui Liu, Sheng Zheng

Tsinghua University, Beijing, China

Paper No. DETC2018-85570, pp. V003T01A026; 6 pages
  • ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 3: 20th International Conference on Advanced Vehicle Technologies; 15th International Conference on Design Education
  • Quebec City, Quebec, Canada, August 26–29, 2018
  • Conference Sponsors: Design Engineering Division, Computers and Information in Engineering Division
  • ISBN: 978-0-7918-5178-4
  • Copyright © 2018 by ASME


BBW (Brake by Wire) system improved day by day, as safety control of transport is one of the most pressing issues. A new EHB (electric hydraulic brake) booster has been proposed in this paper to develop cars in a way that it can reduce a possibility of accidents and minimizing their consequences. EHB with main cylinder electric booster is a typical BBW system. As no vacuum used to drive the EHB system, it is the best choice for the modern transportation technology. The effect of the brake is comfortable because of the motor, which is used to assist in braking and it makes braking softer. Also in case of any fault, emergency braking is always available which is fully manual and without the assistance of any motor. After the Analysis of many EHB booster designs, in this paper, a locking and unlocking hook system is introduced to control the braking system. It is a first approach that is simple and cost-effective.

This brake system is an excellent choice because it is very safe, calculated, and serviceable in complete electrical vehicles. We used gear transmission system to achieve the required braking force with a little amount of torque. We also used SOLIDWORKS to design the model of the EHB booster and test dynamics. Introduced a mathematical model to change motor torque to linear force by using a ball screw mechanism. We verified it with MATLAB/SIMULINK simulation and Amesim model simulation. Reaction force, due to the fluid present in the main cylinder, was taken into account and a closed loop MATLAB/SIMULINK model was utilized to check kinematics of the designed booster.

Copyright © 2018 by ASME
Topics: Wire , Design , Cylinders , Brakes



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