The experiment came into use single light path critical angle method, output signals were detected by four-quadrant receiver, micro-displacement drive element were piezoelectric ceramics.
实验采用单光路临界角法，用四象限探测器探测输出信号，物面微位移采用压电陶瓷作为驱动元件。
2
A new method of reading the declination signal of gyros free rotor based on the four-quadrant sensor is introduced in this paper.
提出了一种陀螺仪自由转子偏角信号读取的方法，这种方法基于对反射光斑的四象限分割。
3
The system error introduced by the four-quadrant photocell and the error correction method are analyzed emphatically.