Accession Number : AD0760532

Title :   Application of State-Variable and Conditional Feedback Methods Toward Reducing the Pointing Error of a Two-Axis Beam Deflector.

Descriptive Note : Masters thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OHIO SCHOOL OF ENGINEERING

Personal Author(s) : Watkinson,Warren B.

Report Date : MAR 1973

Pagination or Media Count : 126

Abstract : The base motion disturbance error and dynamic tracking error of a two-gimbal planar-mirror optical tracking system are reduced by application of modified conditional feedback compensation and by conventional state-variable feedback. A general procedure is developed for application of state-variable feedback to other tracking systems having base motion disturbance, such as gimbaled airborne-radar control systems. The procedure provides a direct mathematical relationship between the base motion disturbance transfer function, the control ratio, and the system type. A Type 4 system is achieved by application of the method to the optical tracking system. A simple graphical approximation procedure is developed for evaluating rms error from mean-square integrals involving high order power spectral densities. (Author)

Descriptors :   (*OPTICAL TRACKING, CONTROL SYSTEMS), (*OPTICAL EQUIPMENT, FEEDBACK), TRANSFER FUNCTIONS, INTEGRAL EQUATIONS, POLYNOMIALS, STABILITY, MATHEMATICAL MODELS, COMPUTER PROGRAMS, OPTICAL COMMUNICATIONS, DIRECTION FINDING, THESES

Subject Categories : Optical Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE