Abstract
This paper describes the effect of armature reaction and mutual induction (transformer action) on the steady state and the dynamic characteristics of the dc servo motors. To investigate the effect, the new models of the dc separately excited servo motor and the dc series servo motor are proposed. The propriety of the models is verified by comparison of the calculated results with the measured results. Furthermore, by using the models, the transfer functions between the applied voltage and the motor speed and the block diagrams of both motors are derived. The transfer functions are also verified by the experimental investigation.
