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Abstract
Even today, DC motors are still used in variety of applications, including home appliances, transportation, as well as industrial crane and rolling machine. However, achieving precise speed and torque control in DC drives at industry level could be challenging, as instability and reduced efficiency remains at large. This project focuses on developing a cascaded control system for a Separately Excited Brushed DC motor using dSPACE platform. The cascaded control system, designed using MATLAB Simulink, incorporates a proportional-integral (PI) controller at the speed loop and a Hysteresis controller at the current loop to improve robustness and dynamic performance. The experimental setup utilizes the dSPACE 1104 platform, an asymmetric bridge converter board, gate driver, and electrical load. Speed measurement is done using an incremental encoder, while current is measured using the ACS712 current sensor. The drive system was tested in alternate low and high speed cycle on various load level to test for stability, robustness and dynamic performance. The proposed control system was compared with PI-closed-loop control and open-loop control determine the best drive performance. Experimental results showed significant improvement in term of transient response and ripple reduction of speed and current for proposed cascaded current control over the closed-loop design.
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Details
1 Faculty of Electrical Engineering and Technology, Universiti Malaysia Perlis , Kampus Pauh Putra, Perlis , Malaysia; Center of Intelligent Robotics and Automation, Universiti Malaysia Perlis , Kampus Pauh Putra, Perlis , Malaysia
2 Faculty of Electrical Engineering and Technology, Universiti Malaysia Perlis , Kampus Pauh Putra, Perlis , Malaysia
3 Faculty of Business and Communication, Universiti Malaysia Perlis , Pusat Perniagaan Pengkalan Jaya, Kangar , Perlis
4 Faculty of Electronic Engineering and Technology, Universiti Malaysia Perlis , Kampus Pauh Putra, Perlis , Malaysia