MICROPROCESSOR SPEED CONTROL OF A D.C. MOTOR

WASFY, S. M.; ABDALLA, O. H.; ABDELKHALEK, M. G.E.; EL-SMAHY, A. A.

doi:10.21608/asat.1987.26230

MICROPROCESSOR SPEED CONTROL OF A D.C. MOTOR

Document Type : Original Article

Authors

¹ Lecturer, Dept. of Electric Machines and Power Engineering, Faculty of Engineering and Technology, University of Helwan, Helwan, Egypt.

² Associate Professor, Dept. of Electric Machines and Power Engineering, Faculty of Engineering and Technology, University of Helwan, Helwan, Egypt.

³ Demonstrator, Dept. of Electric Machines and Power Engineering, Faculty of Engineering and Technology, University of Helwan, Helwan, Egypt.

10.21608/asat.1987.26230

Abstract

The paper presents the development of a microprocessor-based controller for a separately excited d.c. motor drive system. The motor speed is controlled by adjusting the armature voltage, using a single-phase half-controlled converter. The synchronising pulses needed for the converter are generated by the microprocessor. Details of the required compatible hardware circuits and software programs are described. A mathematical model of the drive system is developed for steady-state and transient analyses. Simulation and experimental results are presented to show the system performance. The experimental set-up and its mathematical model provide an excellent facility to study and develop advanced digital controllers for the drive system.