Robust H∞ autopilot design for agile missile with time-varying parameters

This paper considers two autopilot designs using H ∞ loop shaping for an agile missile that experiences high angle of attack, highly nonlinear and rapidly changing dynamics, and aerodynamic variation after launch. The main autopilot design is started with two H ∞ control designs intended to cover th...

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Bibliographic Details
Published inIEEE transactions on aerospace and electronic systems Vol. 50; no. 4; pp. 3082 - 3089
Main Authors Mahmood, Arshad, Yoonsoo Kim, Jeongho Park
Format Journal Article
LanguageEnglish
Published New York IEEE 01.10.2014
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Acceleration
Aerodynamics
Backstepping
Control design
Design
Military aircraft
Missiles
R&D
Research & development
Robustness
Stability analysis
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Summary:This paper considers two autopilot designs using H ∞ loop shaping for an agile missile that experiences high angle of attack, highly nonlinear and rapidly changing dynamics, and aerodynamic variation after launch. The main autopilot design is started with two H ∞ control designs intended to cover the low-speed and high-speed regions of the flight envelope. Then, the two control designs are combined (via Mach variation) to construct a global controller that covers the entire flight envelope. The proposed autopilots have a simple structure and require no time-consuming gain scheduling for many flight conditions, while providing satisfactory tracking and robustness over the entire flight envelope. The performance of the designed autopilots is checked via a comparison study and a challenging intercept scenario. These performance test results clearly demonstrate the merit of the proposed designs.
ISSN:0018-9251
1557-9603
DOI:10.1109/TAES.2014.130750