Control of Slowly Varying LPV Systems: An Application to Flight Control,

Abstract

Recent results in parameter-dependent control of linear parameter-varying (LPV) systems are applied to the problem of designing gain-scheduled pitch rate controllers for the F-16 VISTA (Variable-Stability In-Flight Simulator Test Aircraft). These methods, based on parameter-dependent quadratic Lyapunov functions, take advantage of known a priori bounds on the parameters' rates of variation (the bounds may themselves be parameter-varying). The controller achieves an induced-L2-norm performance objective; Level 1 flying qualities are predicted. Suboptimal solutions are obtained by solving a convex optimization problem described by linear matrix inequalities (LMIs). Incorporation of D-K iteration with 'constant D-scales' provides robustness to time-varying uncertainty. Parameter-varying performance weights are used to shape the desired performance at different points in the design envelope.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1996
Accession Number
ADA320146

Entities

People

  • Lawton H. Lee
  • Mark Sullivan

Organizations

  • Wright Laboratory

Tags

Communities of Interest

  • C4I
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Closed Loop Systems
  • Engineering
  • Equations
  • Equations Of Motion
  • Flight
  • Flight Simulators
  • Inequalities
  • Iterations
  • Level Flight
  • Linear Systems
  • Lyapunov Functions
  • Mach Number
  • Mechanical Engineering
  • National Security
  • Nonlinear Systems
  • Propulsion Systems
  • Simulations

Readers

  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Aviation Science / Aeronautics.
  • Control Systems Engineering.