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TRUE BACK EMF SERVO CONTROLLER

IP.com Disclosure Number: IPCOM000025979D
Original Publication Date: 1989-Jun-30
Included in the Prior Art Database: 2004-Apr-04

Publishing Venue

Xerox Disclosure Journal

Abstract

The idea of a Back EMF servo, or speed control system is well know. There are many different circuits for this type of controller, but all use the same general principal to keep a DC motor at constant speed, independent of the torque the motor has to deliver. A speed torque curve is familiar, and shows that the motor will indeed slow down with load.