This paper analyzes the sources of effecting the error of the accuracy in electrohydraulic position servo system, and carries out quantitative analysis and calculation to main factors.
本文从工程实际出发，分析了影响电液位置伺服系统精度误差的来源，并对各主要因素作了定量的分析计算。
According to fuzzy evaluation of some experts, the fuzzy event tree is introduced in this paper to do quantitative calculation.
针对这一问题，利用专家对事故的模糊评判，引入模糊事件树进行定量计算研究。
Lastly, the scalar theory can still be used for the qualitative analysis because of its briefness, though it will result in great errors in quantitative calculation.
标量衍射理论概念简单，适于定性分析，定量计算则存在较大的误差。
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