Title: Driving/regeneration and stability enhancement of 4WD hybrid vehicles, using multi-stage fuzzy controller

Authors: Peyman Naderi; Zabihollah Salarvand

Addresses: Shahid Rajaee Teacher Training University, Tehran, Iran ' Islamic Azad University, Shabestar Branch, Iran

Abstract: In front wheels driven vehicles, fuel economy can be obtained by summing torques applied on rear wheels. On the other hand, unequal torques applied to rear wheels provides enhanced safety. In this paper, a model with seven degrees of freedom is considered for vehicle body. Thereafter, power-train subsystems are modelled. Considering an electrical machine on each rear wheel, a fuzzy controller is designed for each driving, braking and stability conditions. Another fuzzy controller recognises the vehicle requirements between the driving/regeneration and stability modes. Simulations performed in MATLAB/Simulink environment show that the proposed structure can enhance the vehicle performance in different modes effectively.

Keywords: driving; braking; stability enhancement; 4WD hybrid vehicles; hybrid electric vehicles; HEVs; four wheel drive; fuzzy control; roll; pitch; yaw; µ-split road; fuel economy; powertrain modelling; controller design; simulation; vehicle performance; vehicle safety.

DOI: 10.1504/IJVS.2014.060157

International Journal of Vehicle Safety, 2014 Vol.7 No.2, pp.131 - 146

Received: 30 Nov 2012
Accepted: 07 Aug 2013

Published online: 26 Feb 2014 *

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