摘要
使用增量式光电编码器测量电机位置的伺服系统中,在电机启动时,普遍存在无法准确测量出电机转轴初始位置的问题。电机的初始位置不仅影响伺服系统的定位精度,而且会对电机的启动性能造成一定的影响。提出了一种电机初始位置的确定方法,通过输出给定位置的定子电流矢量的方法,可以精确检测出电机初始位置。实验结果表明,使用该方法进行初始定位时,电机仅有微小的振动,并且电机在定位前后启动性能有较大的提高。
The inaccurate measurement of initial position of motor rotor when the motor starts is a problem existing in a servo system applying increment photo-electricity pulse coder. The initial position of motor rotor not only affects positioning precision, also has effect on start-performance. This paper proposes a method for measurement of initial position of motor rotor. The initial position can be measured accurately through controlling a given-position current vector of motor stator. Experimental results verify that the startperformance of motor can be improved and the motor only has some tiny vibrancy during the course of measurement.
出处
《电力系统及其自动化学报》
CSCD
北大核心
2005年第4期7-10,共4页
Proceedings of the CSU-EPSA
关键词
伺服系统
电流矢量
初始位置
servo system
current vector
initial position
