Title :
Sensorless control of Electric Power Assisted Steering system
Author :
Marouf, A. ; Djemaï, M. ; Sentouh, C. ; Pudlo, P.
Author_Institution :
Univ. Lille Nord de France, Lille, France
Abstract :
This paper deals with the sensorless control of Electric Power-Assisted Steering (EPAS) system with the permanent magnet synchronous motor (PMSM) using sliding mode techniques. Using steering wheel angle and motor currents measurements, two cascaded sliding mode observers with unknown inputs are designed. The whole observer generates the driver torque needed to determine the amount of the assistance and the other pieces of information needed to implement the controller. H-in nity sliding mode control is designed to generate the basic assist torque, improve damping characteristics of EPAS and attenuate the mismatched disturbances. Simulation results show the effectiveness of the proposed control.
Keywords :
H∞ control; observers; permanent magnet motors; sensorless machine control; steering systems; synchronous motors; variable structure systems; EPAS system; H-infinity sliding mode control; PMSM; cascaded sliding mode observers; damping characteristics; electric power assisted steering system sensorless control; mismatched disturbances; motor currents measurements; permanent magnet synchronous motor; sliding mode techniques; steering wheel angle; DC motors; Observers; Roads; Synchronous motors; Torque; Vehicles; Wheels; Electric power assisted steering (EPAS); observer with unknown inputs; permanent magnet synchronous motor; sliding mode control;
Conference_Titel :
Control & Automation (MED), 2012 20th Mediterranean Conference on
Conference_Location :
Barcelona
Print_ISBN :
978-1-4673-2530-1
Electronic_ISBN :
978-1-4673-2529-5
DOI :
10.1109/MED.2012.6265754
