A power method of measuring the torque-producing output of a magnetic amplifier driving one phase of a two-phase servo motor

摘要

The purpose of this paper is to describe a ¿power¿ method of measuring the useful, torque-producing component of the a-c output voltage from magnetic amplifiers used in applications wherein the output phase angle is important, and wherein the ideal phase angle, with respect to the amplifier's excitation, is either zero degree or 90 degrees. Typical of such applications is a single-phase amplifier used to drive one phase of a 2-phase servo motor.