B.J.E. Misgeld, R. Dold, T. Kuhn, H. Buschek

In this study a robust autopilot is designed for a surface launched air defence missile, which is currently developed by Diehl-BGT-Defence. The surface launched version is a further development of an existing high-agile thrust vector controlled missile, with satellite aided navigation midcourse guidance phase, infrared seeker, enhanced motor and flight envelope. The missile is developed as an air-defence weapon. In order to cope with the highly nonlinear and time-varying dynamics and the extended flight envelope, a robust autopilot is designed using H-optimal control and - synthesis. The control synthesis is accomplished for the lateral channel by using linearised models of the airframe, control actuation system and body bending, containing real uncertainty corresponding to the current flight condition. The flight controllers for lateral dynamics are designed for a number of different flight conditions and implemented using a combined blending/gain scheduling approach to cover nonlinearities, which depend on air speed and air density. The controllers are designed as single-input-single-output controllers and extended by an anti-windup scheme to handle actuator saturation. Aerodynamic coupling effects are reduced significantly by a manoeuvre-plane roll control bank-to-turn approach, in an initial turn and end-game manoeuvre. The flight control laws are extended by a roll-decoupling for lateral channels and tested in a high-fidelity six degrees-of-freedom model using full aerodynamics and uncertainty offsets. The superior performance and robustness characteristics are demonstrated in extreme flight manoeuvres, as to be proven in upcoming flight tests.

Deutscher Luft- und Raumfahrtkongress 2010

Conference Paper

englisch

21,0 x 29,7 cm, 7 Seiten

Deutscher Luft- und Raumfahrtkongress Tagungsband - Manuskripte, 2010, 2010, ; S.251-257; 2010; Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn

NA

autopilot, air defence missile

Bestellbar

2010