A unique mechanical power transmission for dynamic servo applications

This paper discusses the basic principle and characteristics of a unique mechanical power transmission with excellent dynamic characteristics. This latter characteristic, plus its unique ability to amplify torque, has increased the torque capabilities of a number of “favorite” instrument control devices — ac servo motors, synchro receivers, and digital stepping motors — without impairing their dynamic characteristics. Application and performance characteristics of the mechanical power amplifier with each of the instrument devices just mentioned are illustrated.