电能质量分析，英文名称：Power Quality Analyzer。
高性能的数字变送电路是新型电能质量分析仪器的关键组成部分。
The digital transmitting circuit with high quality is the key Component to the electric power analytic instrument.
其次介绍了包括PID控制、自适应控制及智能控制等电能质量分析与控制方法。
The analyzing and controlling methods of power quality are proposed in detail, including PID control, vector control, deadbeat control, adaptive control, intelligent control and so on.
本文介绍了电能质量的基本概念，阐述了当前电能质量分析仪的国内外研究现状。
The thesis introduces the basic concept of power quality, and expounds the current research situation of analysis instrument for power quality.
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