| 摘要 |
This device is used for measuring angular displacements in machines with programmatic control, and in robotics; it is also used in the automation of measurement operations and technological processes. It has a high-resolution capacity and a small size. It contains transmitters of light, photo receivers, a code disc with code paths layered on it, and a scheme for transforming signals into codes. On the code disc are code paths for rough, mean and accurate reporting. The code path for rough reporting contains a transparent sector as big as 180 degrees and is tracked by n photo receivers, located at a distance of 360 degrees/2n. 2n photo receivers, displaced at the beginning and end of each sector, track the code path for mean reporting. Two by two, the sectors maintain the same step Wc = Wc-1/n, where Wc-1 is the step of the front sector. The size of the sector with the largest step from the path for mean reporting is 360 degrees/2n. The code path for accurate reporting is with a step WT = 360 degrees/2(2n+k+1).
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