TY  - JOUR
PY  - 2011//
TI  - Optimal control of an On-Demand All-Wheel Drive system (ODAWD) for vehicle traction enhancement
JO  - International journal of vehicle design
A1  - Anwar, Sohel
A1  - Reyhart, Delon
A1  - Reyhart, Delon R.
SP  - 270
EP  - 298
VL  - 56
IS  - 1/2/3/4
N2  - This paper presents an optimal algorithm to enhance the performance of an On-Demand All-Wheel Drive (ODAWD) vehicle by traction improvement through regulation of wheel slip. A 'Minimum Fuel Problem' is developed with a cost function minimising the slip error and the control action defined as the ratio of the total torque transmitted to the non-driven wheels (rear wheels). A simplified vehicle model (bicycle model) is used to develop the proposed controller to optimally reduce the wheel slip error by engaging and dynamically controlling a hydraulic clutch. The controller performance was validated on a realtime Hardware-in-Loop (HIL) bench.    Keywords: optimal control; AWD; all-wheel drive; traction control; Pontryagin|s minimum principle; HIL; hardware-in-loop; real-time control; vehicle control; vehicle modelling; bicycle models; wheel slip error; hydraulic clutch.<p /> 
LA  - en
SN  - 0143-3369
UR  - http://dx.doi.org/10.1504/IJVD.2011.043271
ID  - ref1
ER  -