This paper studies and designs a variable frequency speed regulation system applied to induction motors by means of votating speed difference frequency fuzzy control . the general scheme of the system is presented . circuits and software are designed for the major parts of the system such as constant magnetic linkage control frequency converter and votating speed difference frequency fuzzy controller 本文对异步电动机转差频率模糊控制变频调速系统进行了较为详细的研究和设计，给出了系统的总体方案。对于系统的主要组成部分? ?恒磁链控制变频器和转差频率模糊控制器进行了设计。
