| 摘要 |
The evalution starts with a comparison of each two following states at the outputs (A,B) of the incremental generator (1). The sequential states (a,b) at the outputs are tested for a preset sequence. Pref. the output states of the incremental generator are periodically interrogated and are stored in a buffer memory. The content of the latter are transfered into a second memory (4), while maintaining the preset sequence. The interrogating frequency of the first memory is at least four times as high as the highest frequency delivered by the incremental generator. The stage of the incremental generator, read-out from the first memory may be compared with the state, read-out from the second memory, in a comparison stage (5).
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