Sunday 13 December 2015

Class 14 : Motor Speed Control - PWM Control


Motor Speed Control:

  • Simple PWM code is suitable to vary the speed of the motor. 
  • Figure shows the PWM is interfaced through the DC motor through the motor drive.
  • By varying the voltage applied to the DC motor by PWM will change speed.


  • Figure shows the Motor speed control with direction change. 


  • Typical connection from the FPGA development board.
  • Direction and enable(PWM) are the signals driven from the FPGA I/O.
  • It is interfaced to the motor through H-Bridge circuit. VM. Voltage applied to the motor that is controlled through EN (PWM signal)

  • L293 D is the driver circuit cable to drive two 5/12V DC motor. 
  • This principle is applicable for the high voltage DC motor with suitable drive circuit
  • Using Class 12 PWM code the open loop speed control can be implemented. 
If you have any questions please email : miycircuits@gmail.com

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