DC Motors and Control Circuits

This module will focus on the principles of DC motors and the various types used in industry. The student will learn the fundamentals of speed control including dynamic and regenerative braking. Servo-, Stepper- and Brushless DC motors are discussed as well as basic dynamo configurations. This module also introduces the student to electronic speed control of DC motors.

Learning Outcomes:

Upon completion of this module the student will be able to:

  • Explain the purpose of a commutator in DC motors.
  • Differentiate between a stator and an armature.
  • Describe the basic components of a dynamo.
  • Define torque and counter EMF.
  • Name three typical dynamo configurations.
  • List two types of compound motors.
  • Explain the basic operating principle of servomotors.
  • Describe what is meant by overshoot and damping in motor circuits.
  • List three applications for stepper motors.
  • Name two advantages of using brushless DC (BLDC) motors.
  • Explain how pulse-width modulation is applied to DC motor speed control.
  • Define the terms dynamic and regenerative braking.
  • Describe the principles of operation of a DC drive
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