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首页> 外文期刊>Proceedings of the IEE - Part C: Monographs >A variable-velocity scanner for magnetic deflection of a scanning spot
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A variable-velocity scanner for magnetic deflection of a scanning spot

机译：用于扫描点磁偏的变速扫描仪

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摘要

Designed initially for use with a method for television band compression by variable-velocity scanning, the performance limitations of a magnetic scanner with negative feedback from a novel source are presented: also, some of the many applications of such a scanner are briefly reviewed. The justification of the presentation relies mainly on the mathematical analysis: however, measurements of current waveforms confirm that the influence of non-linearities and other factors which have been explicitly ignored in the derivation of this analysis is negligible in practice. Consideration is given to the practical application of the results, and it is shown that satisfactory operation can easily be obtained for repetitive scanning rates up to 104 per second with a maximum displacement error (during a change of velocity) of no more than 0.2%.
机译：最初设计用于通过可变速度扫描进行电视频段压缩的方法，提出了具有来自新型信号源的负反馈的磁扫描仪的性能局限性：此外，还简要回顾了这种扫描仪的许多应用。演示的依据主要取决于数学分析：但是，电流波形的测量结果证实，在进行此分析时已被明显忽略的非线性和其他因素的影响在实践中可以忽略不计。考虑到结果的实际应用，结果表明，对于高达104每秒的重复扫描速率，最大位移误差（速度变化）不超过0.2％，可以轻松获得令人满意的操作。

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