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Submitted
June 18, 2017
Accepted
June 18, 2017
Published
June 18, 2017
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Abstract

Pulse width modulation (PWM) is used to generate pulses with variable duty cycle rate. The rapid rising and falling edges of PWM signal minimises the switching transition time and the associated switching losses. This paper presents a DC motor speed controller system using PWM technique. The PWM duty cycle is used to vary the speed of the motor by controlling the motor terminal voltage.The motor voltage and revolutions per minutes (RPM) obtained at different duty cycle rates. As the duty cycle increases, more voltage is applied to the motor. This contributes to the stronger magnetic flux inside the armature windings and the increasethe RPM. The characteristics and performance of the DC motor speed control system was investigated. In this paper, a PIC microcontroller and a DC-DC buck converter are employed in the DC motor speed controller system circuit. The microcontroller provides flexibility to the circuit by incorporating two push button switches in order to increase and to decrease the duty cycle rate. The characteristics and performance of the motor speed controller system using microcontroller was examined at different duty cycle rate ranging from 19% to 99%.

Keywords

DC motor duty cycle pulse width modulation motor speed controller DC-DC converter.

Article Details

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Authors retain the copyright without restrictions for their published content in this journal. IJSRTM is a SHERPA ROMEO Journal. 

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This is an open-access article distributed under the terms of  Creative Commons License

 

How to Cite
Tatenda Katsambe, C., Luckose, V., & Shahabuddin, N. S. (2017). EFFECT OF PULSE WIDTH MODULATION ON DC MOTOR SPEED. International Journal of Students’ Research in Technology & Management, 5(2), 42–45. https://doi.org/10.18510/ijsrtm.2017.522
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