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1 2016

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Implementation of PID on PIC24F series microcontroller for speed control of a DC motor using MPLAB and Proteus

Aslam S., Hannan S., Sajjad U., Zafar W.

Advances in Science and Technology. Research Journal

2016

Vol. 10, nr 31

40--50

Speed control of a DC motor is critical in most industrial systems where accuracy and protection are of essence. This paper presents simulations of Proportional Integral Derivative Controller (PID) on a 16-bit PIC 24F series microcontroller for speed control of a DC motor in the presence of load torque. The PID gains have been tuned by Linear Quadratic Regulator (LQR) technique and then it is implemented on a microcontroller using MPLAB, and finally simulated for speed control of a DC motor in Proteus Virtual System Modeling (VSM) software. Proteus has built in feature to add load torque to a DC motor so simulation results have been presented in three cases speed of DC motor is controlled without load torque, with 25% load torque and with 50% load torque. In all three cases PID effectively controls the speed of DC motor with minimum steady state error.