Abstract
This work reports the development of a microcontroller based control system to change the speed of a DC motor. Pulse Width Modulation (PWM) technique was used to control the amount of power delivered to the load (the DC motor) without dissipating any wasted power. The components and assembly of this microcontroller circuit are highlighted in this paper, and the constructed circuit tested. This device was used to control the speed of a rotating fan attached to a DC motor. The DC motor speed variations were read from a Tachometer connected to this motor and the results obtained show good agreement with our expectations. DC Motor speed microcontroller devices find applications in many areas of life, and its applications in small scale industrial settings will no doubt enhance the quest for development in a developing nation like ours.
Highlights
Direct current (DC) motors find useful applications in many control systems [1]
This work reports the development of a microcontroller based control system to change the speed of a DC motor
Pulse Width Modulation (PWM) technique was used to control the amount of power delivered to the load without dissipating any wasted power
Summary
Direct current (DC) motors find useful applications in many control systems [1]. The rotational speed of a DC motor depends on the interaction between the two magnetic fields set up by the stator’s stationary permanent magnets and the armature’s rotating electromagnets. By controlling this interaction, we can control the speed of rotation of the DC motor [3]. We can control the speed of rotation of the DC motor [3] This speed control can be achieved in many different ways.
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