A Smart All-electric Antilock Braking System (ABS)

Shortening braking distance and time for enhanced automotive safety and performance

The all-electric Anti-lock Braking System (ABS) is a safety equipment in the wheel brake that is used to prevent the wheels from locking up and causing dangerous skids during braking. Operated only by electric power, the system considers road conditions and calculates the maximum tire-road adhesion coefficient in order to control the angular wheel acceleration and generate an accurate braking torque by its electric control unit. Compared with conventional hydraulic ABS, this all-electric system achieves higher response rate and more accurate braking torque control, thus effectively shortening the braking distance and time.

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Special Features and Advantages

More accurate and reliable braking torque control for better braking performance, e.g. shorten braking time and distance
Simple structure consisting of an electromagnetic linear actuator and mechanical components only, reducing complexity
Higher safety and longer lifetime, in comparison to hydraulic ABS, due to the absence of flammable brake fluid that may also lead to corrosion
Extremely quiet operation as no pedal vibration is required in ABS operation

Applications

Braking system of Electric Vehicles
Braking system for conventional vehicles and rail-bound vehicles
Other vehicular assistance systems e.g. vehicular stability system

Award & Patent

Silver Medal - Special Edition 2021 Inventions Geneva Evaluation Days - Virtual Event (Mar 2021)

Patent application number:

201910995257.8 (China)

Principal Investigator

Prof. Eric Ka-wai CHENG

Department of Electrical Engineering

Download PDF version Technology frontier

Shortening braking distance and time for enhanced automotive safety and performance

Single-wheel ABS test bench

Photo of the electromechanical brake (EMB)

Braking performance: E-ABS provides a better slip control when compared with non-ABS

Special Features and Advantages

Applications

Award & Patent

Principal Investigator