Root Locus is a important part of the classical theory of automation that is a diagrammatic method to analyse and design the linear system.

根轨迹法是古典控制理论的重要部分，是分析和设计线性定常控制系统的图解方法。

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The relatively complete theory of frequency method and root locus method for the design of automatic control system was set up through the efforts of numerous scholars after world war II.

二次大战以后，经过众多学者的努力，形成了较为完整的自动控制系统设计的频率法理论和根轨迹法理论。

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The paper first analyses some defects of existing design procedures, and then puts forward an idea of Root-Locus Method Correction which removes the need to draw root-locus diagrams.

本文分析了现有离散控制系统设计方法的某些不足之处；提出了一种不必画根迹的根迹法校正的设想；

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