ROBUST ADAPTIVE FUZZY SYSTEMS FOR INTEGRATED LATERAL AND LONGITUDINAL CONTROL OF HIGHWAY VEHICLES

Samaranath R. Ranatunga, Zhenwei Cao, Romesh Nagarajah, and Ahmad Rad

Keywords

Integrated vehicle control, nonlinear control, adaptive fuzzy control,robust control, variable structure control

Abstract

This paper presents a robust integrated lateral and longitudinal vehicular controller design which improves tracking control of pas- senger cars. An adaptive fuzzy controller is used to compensate the coupling effects, nonlinearity issues and uncertainties. Additionally, a variable structure control scheme is used to address fuzzy ap- proximation errors. A Lyapunov-based Kalman–Yakubovich–Popov (KYP) lemma is used to ensure system stability. The effectiveness of the developed control system is validated with simulation studies us- ing a high precision vehicle model on veDYNA r , a well-recognized simulation platform used by industry for research and development.

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