Control system for an electro-pneumatic converter

摘要

An electro-pneumatic control system (10) is provided having closed loop control of a D.C. motor (12) which is operated from a biased motor servo circuit (14) thereby eliminating the need for a negative power supply to provide bi-directional rotation. Closed loop control is provided by a feedback signal from a pressure transducer (26) monitoring the pressure output signal (22) of the mechanical servo assembly (20).