该系统基于80C31单片机为主控制器，采用了混合式稀土永磁步进电机为执行部件，并以双通道旋转变压器为天线位置传感器。
The system adopts 80C31 MCU as the main controller, hybrid Rare-Earth permanent magnet stepper motor as the execution component, bio-passage rotary transformer as antenna position sensor.
机器人执行部件的位置误差（或精度），是反映机器人性能的一个重要指标。
Measurement and compensation of volumetric position errors for NC machine tools are important approach for quality assurance and higher accuracy.
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