Research on Direct Torque Control Method of Brushless DC Motor for Electric Power Steering
CHEN Xiu-bo
LI Jian-ming
ZHANG Zhi-lin
JIN Ting
HANG Jun
Abstract：According to the functional characteristics of EPS system , this article proposes a brushless DC motor ( BLDC) direct torque control ( DTC) method which is suitable to the automobile steering to improve the control performance of the automobile steering system .Beginning with the relationship between the torque and flux linkage characteristics of BLDC system , and according to the motor system′s torque, flux tracking error and sector number of the stator , it is to search for the pre-planned offline lookup table ( LUT) and directly output the optimal voltage space vector .Finally, the experiment of BLDC control system is simulated based on the Matlab/Simulink simulation platform .The experimental results show that the DTC method can effectively control the electromagnetic torque ripple , and greatly improve the dynamic , steady driving performance of BLDC , and provide a new idea that is suitable for the EPS control of the electric power steering system .
Keywords：electric power steeringbrushless DC motordirect torque controltorque ripple suppression
Publication Date：2014-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：5( 15-19 )