FPGA implementation for speed monitoring and speed control of a DC motor using fuzzy logic

Abstract

This paper presents the speed monitoring of a DC motor drive using field programmable gate array which provides a faster operation than any other conventional analog methods or digital methods like DSP. The paper consists of two parts. The first part deals with the MATLAB simulation for speed control of a DC motor using fuzzy logic. The most effective method of control is the control of PWM, generated for triggering the converter circuit. The PWM is given through the driver circuit to the half bridge converter, which controls the speed of the motor. The hardware part deals with the speed monitoring of the DC motor using FPGA. In this implementation, the PWM is generated using XBLINX software, which is given to the converter through the FPGA The use of FPGA reduces the processing speed and hence increases the efficiency of the motor. The result of the open loop control is compared with the fuzzy logic control.