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Total Energy Control System Autopilot Design with Constrained Parameter Optimization

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2 Author(s)
Voth, Christopher ; Graduate Student Assistant, Deparment of Aeronautics and Astronautics, University of Washington, Seattle, Washington 98195 ; Ly, U.-L.

This paper describes the application of a multivariable control design method (SANDY) based on constrained parameter optimization to the design of a multiloop aircraft flight control system. Specifically, the design method is applied to the direct synthesis of a multiloop AFCS "inner loop" feedback control system based on total energy control principles (TECS). The design procedure offers a structured approach for the determination of a set of stabilizing controller design gains that meet design specifications in closed-loop stability, command tracking performance, disturbance rejection, and limits on control activities. The presented approach may be extended to a broader class of multiloop flight control systems. Direct tradeoffs between many real design goals are rendered systematic by proper formulation of the design objectives and constraints. Satisfactory designs are usually obtained in few iterations. Performance characteristics of the optimized TECS design have been improved; particularly in the areas of closed-loop damping and control activity in the presence of turbulence.

Published in:

American Control Conference, 1990

Date of Conference:

23-25 May 1990