| 摘要 |
<p>A digital synthetic serrodyne phase difference controller for a rotation sensor capable of sensing rotation about an axis of an optical fiber coil (10) based on having a pair of electromagnetic waves propagating through the optical fiber in opposite directions to both impinge on a photodetector (13, 14) with a phase difference relationship therebetween, the digital synthetic serrodyne phase difference controller including a positive serrodyne generator (26) and a negative serrodyne generator (27) having outputs which input to a common adder (35). The bit output of the adder is converted to analog in a digital-to-analog converter (40) and applied to operate a frequency translating device (20) in the optical path with the coil.</p> |
