Accession Number : ADA289311

Title :   Applications of l sub 1 and Mixed H sub 2/l sub 1 Optimization.

Descriptive Note : Master's thesis,

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

Personal Author(s) : Spillman, Mark S.

PDF Url : ADA289311

Report Date : DEC 1994

Pagination or Media Count : 136

Abstract : This thesis explores the use of 11 and mixed H2/11 optimization methods to design flight control systems. I(1) optimization is used to handle tracking issues in the design of digital compensators. Control deflection and rate limitations, overshoot and undershoot limitations and steady-state error requirements are discussed. Model-matching techniques which produce acceptable tracking results with lower order controllers are also examined. New numerical methods for continuous H2/L1 and discrete H2/11 optimization are presented. These methods are used to design an aircraft controller in continuous and discrete time and the results are compared.

Descriptors :   *OPTIMIZATION, *SYSTEMS ENGINEERING, *FLIGHT CONTROL SYSTEMS, *JET FIGHTERS, REQUIREMENTS, STEADY STATE, DIGITAL SYSTEMS, LINEAR PROGRAMMING, DEFLECTION, RATES, TRACKING, THESES, LIMITATIONS, ERRORS, NUMERICAL METHODS AND PROCEDURES, TIME DOMAIN, COMPENSATORS.

Subject Categories : Flight Control and Instrumentation
      Operations Research
      Attack and Fighter Aircraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE