Quick torque controlled DC motor drive using BRM technique

This paper presents a methodology for the technique of controlling a DC motor drive by implementation of quadrant operating mode which can ensure the torque control and speed with response time less than 2 seconds at all loading conditions. By implementation of binary rate modulation (BRM) technique, energy is fed with definite values of BRM 256 bits, with different patterns of high accuracy, and fixing scan time at 1.334 ms, the ripple is less than 2%, thus high efficiency can be achieved, from the consequence of the accuracy of energy feeding at low current. The stability of the whole system can be determined from circle criterion by root locus method. The instant reverse direction of rotation can be done by decreasing the energy to the lowest level while motor is running with no load at the speed of 100 rpm.