Title :
Research of digital control system for single freedom hybrid magnetic bearing in the axial direction
Author :
Jia, Hongyun ; Zhu, Huangqiu
Author_Institution :
Sch. of Electr. & Inf. Eng., Jiangsu Univ.
Abstract :
In the paper, a novel axial hybrid magnetic bearing (HMB) has been proposed. Based on configuration and working principle of the hybrid magnetic bearing in axial direction, the principle of producing suspension forces is elaborated; the flux path is calculated by using equivalent magnetic circuit. Adopting a fixed-point digital control processor TMS320LF2407, the hardware of digital control system including A/D and D/A converters is designed. The control program is developed with TMS320LF2407 assembly language. The single freedom axial hybrid magnetic bearing can suspend steadily based on TDS2407EA and the software. The research results have shown that the digital control system based on TMS320LF2407 can meet the requirements of a high-speed magnetic bearing system, and it is very convenient to use other advanced control strategies, too
Keywords :
analogue-digital conversion; digital control; digital-analogue conversion; electrical engineering computing; equivalent circuits; magnetic bearings; magnetic circuits; A-D converters; D-A converters; TDS2407EA; TMS320LF2407 fixed-point digital control processor; assembly language; axial hybrid magnetic bearing; digital control system; equivalent magnetic circuit; flux path; suspension forces; Control systems; Digital control; Force control; Hardware; Magnetic levitation; Permanent magnets; Shafts; Stator cores; Stator windings; Torque control;
Conference_Titel :
Electrical Machines and Systems, 2005. ICEMS 2005. Proceedings of the Eighth International Conference on
Conference_Location :
Nanjing
Print_ISBN :
7-5062-7407-8
DOI :
10.1109/ICEMS.2005.202874
