D-C motors for automatic control systems

THE INCREASED USE and accuracy of automatic control systems for industrial and military applications has made it essential that system components be reexamined in terms of over-all system operation. It is the purpose of this article to study the application of d-c motors in these systems in order to 1. Determine the motor constants which affect system performance. 2. Convert the important motor system constants into design factors, such as armature diameter andlength, flux and copper densities, and so forth. 3. Determine the motor design which will giveoptimum over-all system performance.