This document discusses various methods for speed control of induction motors using voltage/frequency (V/F) control. It begins with an introduction to induction motors and V/F control. Several previous studies on V/F control using different approaches are then reviewed, including methods using square wave inverters, vector control theory, stator flux control, fuzzy logic control, FPGA control, and hybrid PWM techniques. The document also discusses open-loop and closed-loop V/F control systems. It concludes by stating that the objective of the proposed work is to develop a fuzzy logic based closed-loop V/F control system to improve the efficiency and performance of induction motor speed control.