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Control-oriented modeling and adaptive backstepping control for a nonminimum phase hypersonic vehicle.

Linqi Ye1, Qun Zong1, Bailing Tian1

  • 1School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China.

ISA Transactions
|July 30, 2017
PubMed
Summary
This summary is machine-generated.

This study addresses the nonminimum phase problem in flexible hypersonic vehicles by extending backstepping control. The new method enhances dynamic inversion capabilities for stable nonlinear control and improved tracking accuracy.

Keywords:
Adaptive backstepping controlControl-oriented modelingHypersonic vehicleNonminimum phase

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Area of Science:

  • Aerospace Engineering
  • Control Systems Theory
  • Nonlinear Control

Background:

  • Nonminimum phase systems pose significant challenges for dynamic inversion in nonlinear control design.
  • Flexible hypersonic vehicles exhibit complex dynamics requiring advanced control strategies.

Purpose of the Study:

  • To investigate and resolve the nonminimum phase problem in flexible hypersonic vehicles.
  • To develop a stable nonlinear controller that overcomes limitations of traditional dynamic inversion methods.

Main Methods:

  • Extended backstepping control by incorporating internal dynamics into the control loop.
  • Development of a simplified control-oriented model for adaptive backstepping.
  • Mathematical proofs for asymptotic and bounded stability under different command scenarios.

Main Results:

  • The proposed extended backstepping controller ensures output tracking and internal stability.
  • A simplified model enhances the applicability of adaptive backstepping, reducing design complexity.
  • Simulation results demonstrate superior tracking accuracy and robustness compared to existing methods.

Conclusions:

  • The developed nonlinear control method effectively handles nonminimum phase issues in flexible hypersonic vehicles.
  • This approach offers a robust and accurate control solution, potentially guiding other complex system designs.