DocumentCode :
1877450
Title :
An approach to torque ripple compensation for high performance PMSM servo system
Author :
Xu, Dianguo ; Gao, Yang
Author_Institution :
Dept. of Electr. Eng., Harbin Inst. of Technol., China
Volume :
5
fYear :
2004
fDate :
20-25 June 2004
Firstpage :
3256
Abstract :
An adaptive load torque observer is presented to compensate the torque ripple in PMSM servo system. A simple adaptive scheme is derived using Popov´s hyperstability theory. The torque ripple detected by the observer is compensated by a feed forwarding equivalent current which gives fast response. The noisy current information is exempt from the observer to avoid its deterioration of the quality of the observer. The speed measurement delay is considered by using observed speed since the instantaneous velocity can´t be estimated precisely at low speed because of too few positional pulses from the absolute encoder during one time interval. Simulation and experimental results demonstrate that the proposed method can improve the dynamic performance of PMSM servo system satisfyingly.
Keywords :
Popov criterion; angular velocity measurement; compensation; observers; permanent magnet motors; servomechanisms; synchronous motors; torque; PMSM servo system; Popov´s hyperstability theory; adaptive load torque observer; dynamic performance; encoder; noisy current information; permanent-magnet synchronous motor; position pulses; speed measurement; torque ripple compensation; Adaptive systems; Delay effects; Delay estimation; Observers; Optical noise; Servomechanisms; Stators; Synchronous motors; Torque; Velocity measurement;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power Electronics Specialists Conference, 2004. PESC 04. 2004 IEEE 35th Annual
ISSN :
0275-9306
Print_ISBN :
0-7803-8399-0
Type :
conf
DOI :
10.1109/PESC.2004.1355050
Filename :
1355050
Link To Document :
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