Structured H-infinity control based on classical control parameters for the VEGA launch vehicle

This article describes a methodology for structured H-infinity synthesis that reconciles classical and robust control concepts. The aim is to provide a transparent and methodological process to tune the weights used in the structured synthesis. The process is exemplified on a simplified model for the atmospheric ascent-flight control system for the VEGA launch vehicle. The results show that the same gains used for a real flight can be recovered leading the path for industrial transfer of the H-infinity structured control to launchers.

[1]  Pierre Apkarian,et al.  Structured H∞ Synthesis in MATLAB , 2011 .

[2]  Enrique Gadea Díaz Design of a robust controller for the VEGA TVC using the u − synthesis technique , 2010 .

[3]  Adrian S. Lewis,et al.  HIFOO - A MATLAB package for fixed-order controller design and H ∞ optimization , 2006 .

[4]  M. A. deVirgilio,et al.  Practical applications of modern controls for booster autopilot design , 1993, [1993 Proceedings] AIAA/IEEE Digital Avionics Systems Conference.

[5]  C. Pittet,et al.  Gyroless Attitude Control of a Flexible Microsatellite , 2005 .

[6]  Ian Postlethwaite,et al.  Multivariable Feedback Control: Analysis and Design , 1996 .

[7]  David Saussié,et al.  Self-scheduled and structured H⋡ synthesis : A launch vehicle application , 2013, 2013 American Control Conference.

[8]  Catherine Charbonnel H ∞ Controller Design and μ-Analysis: Powerful Tools for Flexible Satellite Attitude Control , 2010 .

[9]  Pierre Apkarian,et al.  Decentralized and fixed-structure H∞ control in MATLAB , 2011, IEEE Conference on Decision and Control and European Control Conference.

[10]  Y. Morita,et al.  Attitude control design of the M–V rocket , 2001, Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences.

[11]  Fabio Ramos,et al.  Approach Comparison for Controller Design of a Launcher , 2006 .

[12]  Samir Bennani,et al.  H-Infinity control of the VEGA Launch Vehicle first stage in presence of roll , 2013 .

[13]  David Saussié,et al.  Structured H∞ control for a launch vehicle , 2012, 2012 American Control Conference (ACC).