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:

1973-03-01

Pagination or Media Count:

126.0

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