摘要
机械传动中产生的误差许多是以调制的形式出现的。本文针对磁带录像机走带误差产生的情况,提出了用Bessel函数分析其误差调制源。通过理论分析和实测验证,得出了具有普遍意义的结论,即在众多调制源的情况下,若某一调制源是起主要作用的,则在其解调后的频谱中,在基底之上的峰值呈现单一调制源调制的特性。
Errors in Mechanical Transmission System often turn out due to modulation. In this paper, we propose using Bessel Function to analyze error sources in Transmission System of VTR. Through experiment and theory analysis, we have got a conclusion, that is, when there are a lot of modulation sources, if one of them plays a main part, in their demodulation spectrum, the peaks on the base appear as if there is only one error source.
关键词
磁带录像机
走带系统
误差调制源
bessel function
modulation and demodulation
error modulated source
spectrum analysis
