position coder

The text introduces sensor technology used in this system, such as laser sensor, coder sensor and Position Sensitive Device. Their principles and applications are depicted in detail.

对本测量系统中使用到的传感器技术进行了详细阐述。对激光传感器、编码器、PSD传感器从原理到应用都进行了详细介绍。

The reason of the error in axle-angle position coder for precision tracking and instrumentation radar is analyzed in this paper, and the concrete measures of controlling the error are also proposed.

分析了精密跟踪测量雷达用轴角编码器产生测量误差的原因，并结合实际提出了控制测量误差的具体措施。

METHODS: The ultrasonic transducer is located by using single chip computer and absolution position coder.

方法: 应用单片计算机技术及绝对位置编码器对超声传感器进行定位.