Abstract
Abstract: This system monitors speed of BLDC motor using fuzzy logic. This system uses an 8051 microcontroller to achieve this purpose. Here, we constantly monitor the motor’s speed using an IR sensor. The photo-diode is used to keep track of the fan’s motor rotation and measure the RPM. This sensor is integrated with the microcontroller and provides input to the system. The microcontroller then calculates the RPM of motor based on signals provided by the photo-diode. The microcontroller is also integrated with an LCD display to show the status of the system along with the speed of the motor. The fuzzy logic is used in this project to increase and decrease PWM supply based on the RPM of fan monitored to keep it rotating close to the desired speed. Thus, microcontroller constantly provides PWM pulses to keep the motor rotating at the desired speed as per fuzzy logic. Keywords: FUZZY-LOGIC, Motorcontrol, 8051, IR Sensor, LCD
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