14-06-2012, 04:27 PM
DC Motor Controller
DC Motor Controller.docx (Size: 83.6 KB / Downloads: 64)
Abstract: -
DC Motors are widely used for motion control in manufacturing industries. Motion of DC motor is controlled using DC Drive. DC drive changes the speed and direction of a motor. Many of the DC drives provides programmable facilities means to program the motion of motor. So here I am giving one such example where one can completely program the motion of motor. Using this controller one can
1. Change the direction of motor
2. Change the speed of motor
3. Change the running mode of motor in continuous, reversible or jogging
4. Change the forward and reverse running time of motor
Some of the features of this controller are
1. Programmable due to 89C51 controller
2. Push button control
3. Message display on LCD panel
4. LED indications
5. Can control DC motors from 12 V to up to 100V (up to 5 Amp)
6. Uses PWM (500 Hz) to change the speed of motor
7. Uses Darlington H-bridge for switching action
I have tested this controller with motor having following specifications
1. Motor type - DC series
2. Max operating voltage - 12 VDC
3. Max operating current - 2 Amp
4. Max RPM - 3000 @ 12 V
Complete circuit is combination of two sections
1. Control section
2. Driver section
Control section includes 89C51 micro controller that actually controls the motion of motor depending upon given user commands. It receives user command through push buttons, generates all controlling signals, displays messages on LCD and give indications on LEDs
Driver section actually drives the DC motor. It provides sufficient voltage and current to run the DC motor in desire manner. It just receives signals from control section and rotates the motor