对于采用增量式测量系统的数控机床，每次开机后都必须首先进行“回零”操作。
For NC machine tool setting incremental measure system, it is essential to zero when running the machine.
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。
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.
该文研究了电机伺服系统中低分辨率增量编码器超低速测量问题。
In this paper, the ultra-low speed measurement problems were investigated using on the lower resolution incremental encoders.
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