Development of Fuzzy Logic ABS Control for Commercial Trucks

A fuzzy logic (FL) anti-skid brake controller (ABS) is proposed as the next-generation ABS replacing current generation finite state (FS) control. The FL controller is part of a commercial truck braking system, encompassing reverse front-back braking proportions on an articulated vehicle as compared to that found on fixed, passenger car systems. The FL controller must satisfy three goals: 1) produce superior braking distances over that of the finite state controller, specifically under low μ conditions; 2) provide superior braking under dynamically varying system conditions; and 3) provide a convenient, flexible, and tractable ABS solution which is amenable to re-development to different vehicular platforms.

Via Monte Carlo simulations, the FL controller averages a 30% shorter braking distance when normalized to the absolute minimum possible braking distance. Solution robustness is demonstrated by varying a number of system parameters. Finally, the FL rule sets and overall configuration illustrate a straight-forward design and maturation process enabling re-development to different vehicular platforms.