Accession Number : ADA262151


Title :   The Design of a Robust Autopilot for the Archytas Prototype Via Linear Quadratic Synthesis


Descriptive Note : Master's thesis,


Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA


Personal Author(s) : Davis, Joseph P


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a262151.pdf


Report Date : Dec 1992


Pagination or Media Count : 131


Abstract : The purpose of this research is to design, simulate and implement a robust autopilot for the vertical mode of operation of the Archytas prototype. Archytas is an Unmanned Air Vehicle that is designed to take off and land vertically, and to transition to horizontal forward flight. A feedback control scheme is designed for both the single-input, single-output and the multi-input, multi-output subsystems using optimal control techniques. In this research, the linear quadratic regulator performance measure is modified to allow for its application to the tracking problem solution. Additionally, the control systems are designed using reduced order models. Computer simulations show that the reduced order controller designs provide results comparable to the full order controller designs. Successful hardware tests with the roll rate control system validated the reduced order model design philosophy used in this research.... Linear Quadratic Regulator, AROD, Archytas, Reduced Order, Performance measure.


Descriptors :   *AUTOMATIC PILOTS , *VERTICAL TAKEOFF AIRCRAFT , TEST AND EVALUATION , COMPUTERIZED SIMULATION , INPUT , OUTPUT , ROLL , EQUATIONS OF MOTION , DEMONSTRATIONS , COMPUTERS , AIR , RATES , TRACKING , THESES , PROTOTYPES , REGULATORS , FLIGHT , FEEDBACK , UNMANNED , VERTICAL LANDINGS , TRANSITIONS


Subject Categories : V/STOL
      Flight Control and Instrumentation


Distribution Statement : APPROVED FOR PUBLIC RELEASE