Adaptive soft computing strategy for ride quality improvement with anti-lock braking system

The paper analyzes vibrations effect on the ride quality of the car occupant at the driver and passenger seats along with Anti-lock Braking Sytem (ABS). Nine degrees of freedom (FoD) full-car active suspension and ABS models are used in the analysis. The vertical vibrations effect on the driver and passenger comfort is evaluated according to the set criteria defined in the ISO 2631-1 of 1997 standard for whole body vibrations. ABS analysis is based on the slip ratio control to avoid wheel lock and slip. Coordination of the active suspension and ABS is carried out. A modified adaptive NeuroFuzzy Takagi Sugeno Kang (NFTSK) control algorithm is developed for ride comfort improvement. Performance of the advanced adaptive control strategy is validated against the Gaussian random external road profile and results are compared with passive control and for further performance validation, results are compared with the indices defined by the international standard. Simulations are performed using Matlab Simulink software.