When the open-loop gain of servo system is determined, the selection of DAC resolution and gear ratio is restricted each other and should be paid much attention in the design of servo system.
由于DAC和齿轮减速比都影响着伺服系统的开环增益，当系统开环增益一定时，DAC位数的实际作用和减速比的选择相互限制，在设计雷达伺服系统中需注意。
In this paper, the accuracy influences of general gear ratio, transmission error and driving backlash on servo system were analyzed, and some measures of gear ratio distribution were presented.
文章分析了伺服系统中精密齿轮传动装置总传动比、传动误差、传动回差对整个系统的精度影响，提出传动装置各级精度分配时应注意的问题。
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