An Optical Analog-Digital Transducer for Use in Servo Systems

摘要

An analysis of the Optisyn, an analog digital transducer, in several types of servo systems is presented with emphasis upon the digital control features.nThe Optisyn consists of two glass disks with photographer patterns of alternate transparent and opaque sectors and a light source. As one of the disks is rotated the resulting modulated light intensity is sensed by phototransistors. By using two gas coded pairs of these phototransistor.