This article briefly describes the basic principle of direct torque control, the main circuit, control circuit composition and basic control principles of the extruding granulation section gear pump speed control system, and the treatment methods and cause analysis of the typical fault encountered in the maintenance process.%本文简要讲述了直接转矩控制的基本原理,挤压造粒工段齿轮泵调速系统主回路、控制回路的构成及其基本控制原理,以及维护过程中遇到的典型故障的处理方法与原因分析.
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