DC motors are widely used in various industries because they cater to applications of high and low power and in both fixed and variable speed electric drives. This paper analyses the transient parameters of the speed of separately excited DC motors using the Linear Quadratic Regulator (LQR) method. The speed of the DC motor is analyzed by measuring the output. The LQR method has been applied on three different motors of different specifications. The speed of the three motors is compared on the basis of the transient specifications using the LQR method. Simulation of a motor in MATLAB has shown that the performance of a motor with a low power application has a significant and improved quality response with the LQR method. Properties such as minimized deviation in speed, easy design and cost reduction make it efficient for use in controlled and balanced systems. These properties enhance speed control of a DC motor by achieving the desired performance for the systems where different power ratings occur.
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V. Saisudha, Seeja, G., V. Pillay, R., Manikutty, G., and Rao R. Bhavani, “Analysis of speed control of DC motor using LQR method”, International Journal of Control Theory and Applications, vol. 9, pp. 7377-7385, 2016.