Design and flight testing of a digital optimal control general aviation autopilot. (English) Zbl 0554.93048

This paper presents the designs of proportional-integral-filter (PIF) autopilots for a General Aviation (NAVION) aircraft. The PIF autopilots use modern control theory to determine heading select and altitude select and hold autopilot modes. The PIF control law uses typical General Aviation sensors for state feedback; command error integration for command tracking; digital complementary filtering and analog prefiltering for sensor noise suppression; a control filter for computation delay accommodation; and the incremental form to eliminate trim values in implementation.


93C57 Sampled-data control/observation systems
93B50 Synthesis problems
93D15 Stabilization of systems by feedback
70Q05 Control of mechanical systems
93B40 Computational methods in systems theory (MSC2010)
93C55 Discrete-time control/observation systems


Full Text: DOI


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