Speed Control of AC Motor Using GSM

Abstract

GSM (SMS) Controlled AC Motor is automatic control system which capable of receiving a set of command instructions in the form of Short message service(SMS) and performs the necessary actions like Start, Stop and speed control. We have used a dedicated modem/mobile at the receiver module i.e. with the model itself and send the commands using SMS service as per the required actions. The GSM modem which is dedicated at the motor driver is interfaced with an intellectual device called Micro controller so that it takes the responsibility of reading the received commands in the form of SMS from the mobile unit and perform the corresponding predefined tasks such as motor start, stop, motor direction and speed control at different levels. The utilization of GSM modem in this project as it ubiquity standard which enables subscribers to use their phones in many parts of the world, and make international roaming very common between mobile phone operators. This system is extremely handy and convenient to operate at any place for controlling the speed and direction of motor.