| 摘要 |
This disclosure deals with a mechanical servo system used to provide accurate digital readout from binary-coded decimal input. The input data is divided into a coarse portion and a fine portion. The coarse feedback portion measures in units of 1,000 feet, while the fine feedback control measures the low order units and consists of two cyclical elements. Each fine element has occasion to pass through a dead band region, but the elements are connected in a ganged relation 180 DEG out of phase, so that when one is at its dead band, the other is at its continuous portion. The selection of a fine feedback element is controlled through a switching circuit and according to a logic equation stored in the input unit.
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