Smooth Sliding Mode Controller Design for Robust Missile Autopilot

Abstract

Presented is a method of smooth sliding mode control design to provide for the second- order sliding mode on the selected sliding surface. The control law is a nonlinear dynamic feedback that in absence of unknown disturbances provides for finite-time convergence of the second-order reaching phase dynamics. The application of the second-order disturbance observer in a combination with the proposed continuous control law gives the second-order sliding accuracy in presence of unknown disturbances and the discrete-time control update. The piecewise constant control feedback is smooth. The proposed control scheme is applied to a generic three-loop control system, and the proposed multiple time scale sliding mode design is demonstrated on the simplified model of a ballistic interceptor missile.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2001
Accession Number
ADA396800

Entities

People

  • Yuri B. Shtessel

Organizations

  • University of Alabama in Huntsville

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Algorithms
  • Automatic Pilots
  • Boundary Layer
  • Closed Loop Systems
  • Control Systems
  • Department Of Defense
  • Differential Equations
  • Equations
  • Frequency
  • Guidance
  • Layers
  • Lyapunov Functions
  • Navigation
  • Nonlinear Differential Equations
  • Proportional Navigation
  • Rocket Engines

Fields of Study

  • Mathematics

Readers

  • Control Systems Engineering.
  • Robotics and Automation.