Accession Number : ADD013601

Title :   Servo Control System for the Positioning of an Apparatus.

Descriptive Note : Patent, Filed 22 Jan 81, patented 27 Jul 82,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Browder, George B

Report Date : 27 Jul 1982

Pagination or Media Count : 9

Abstract : This patent discloses a servo system for the positioning of a projector comprising a direct current motor having the projector connected to the shaft of the motor, and a digital computer for providing command signals to move the projector to a programmed position at a programmed velocity within a predetermined time period. A potentiometer produced an electrical signal indicative of the actual velocity of the projector. Feedback means, in turn, provides a position error signal indicative of the difference between the programmed position and the actual position of the projector, and varies, in response to the position and velocity error signals, the voltage level of the command signal such that the projector will attain the programmed position within the predetermined time period. A forward feed servo enhancer generates, in response to the command signals, a forward feed enhancement signal which when combined with the command signals will reduce the velocity error signal to approximately zero volts.

Descriptors :   *COMPUTER PROGRAMMING, *CONTROL SYSTEMS, *DIGITAL COMPUTERS, *POSITION(LOCATION), *SERVOMECHANISMS, *PATENTS, DIRECT CURRENT, ELECTRICITY, ERRORS, FEEDING, FORWARD AREAS, MOTORS, OPTIMIZATION, POTENTIOMETERS, RESPONSE, SIGNALS, VELOCITY, VOLTAGE

Subject Categories : Electrical and Electronic Equipment
      Computer Programming and Software
      Computer Hardware

Distribution Statement : APPROVED FOR PUBLIC RELEASE