根据跟踪装置与迹线之间的实时偏离程度和偏离速度，就可以采用相应的控制算法实现自动跟踪。
According to real-time offset degree and offset velocity between trace and tracker, corresponding control algorithm is adopted to realize automatic following.
本机电器部分采用PLC触摸屏控制，液压系统采用电动油泵，增加过筛、除尘装置，自动化程度高。
The electric part USES PLC touch screen control, hydraulic system USES an electric pump to increase screening and dedusting equipment with high degree of automation.
但是目前国内广泛使用的X射线机的点片曝光装置还存在自动化程度低、控制精度差、曝光精度低以及体积大等缺点。
However, the film exposure device of the currently widespread-used X-ray machine has poor quality of image, a low level of automation, poor precision controlled and film exposure and large size.
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