目前国内唯一一本介绍通用变频器的书籍，各大变频器厂商都将其作为工作手册使用。对目前国内较缺的矢量变频器 高压变频器作了一般性介绍。对DSP电机控制有指导作用。

伺服的基本概念是准确、精确、快速定位。变频是伺服控制的一个必须的内部环节，伺服驱动器中同样存在变频（要进行无级调速）-The basic concept of the servo is accurate, precise and rapid positioning. A servo-controlled inverter is necessary internal links, there are also servo drive frequency (to variable speed)

讲述了上变频的相关原理以及其vertebi译码，和相关的编码-Tells the story of upconversion the relevant principles as well as its vertebi decoding, and the associated coding