Title :
Realize a self-recovering function during phase-sequence fault of a digital servo system
Author :
Hu, Qingbo ; Qu, Bo ; Zhengyu Lil ; Zhang, Fan
Author_Institution :
National Key Lab. of Power Electron., Zhejiang Univ., Hangzhou, China
Abstract :
As for a servo control system of the permanent magnet synchronous motor (PMSM), this paper analyzes fault causation of motor start-up that is on account of mistaken connection with motor phase-sequence, and kinds of faults have been classified in the paper. In addition, a method that can realize motor rotor oriented control using TMS320F240 digital signal processor (DSP) is proposed. With the motor rotor position can be acquired by an incremental photo-electricity encoder, the connected sequence of motor phases can be judged by using stator voltage vector oriented control technology, also it can realize self-recovering function by adjusting output phase-sequence of the controller by programming. Experiment results verify that motor can self-recover fast when phase-sequence faults happened and can start rapidly, and the proposed method can be used in servo control system.
Keywords :
digital control; fault diagnosis; machine vector control; permanent magnet motors; rotors; servomotors; stators; synchronous motors; PMSM; TMS320F240 digital signal processor; digital servo system; motor phase-sequence; motor rotor oriented control; motor start-up; permanent magnet synchronous motor; phase-sequence fault; photoelectricity encoder; self-recovering function; servo control system; stator voltage vector oriented control; Digital control; Digital signal processors; Magnetic analysis; Permanent magnet motors; Rotors; Servomechanisms; Servomotors; Servosystems; Synchronous motors; Voltage control;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2006. APEC '06. Twenty-First Annual IEEE
Print_ISBN :
0-7803-9547-6
DOI :
10.1109/APEC.2006.1620758
