Robust gain-scheduled autopilot design for spin-stabilized projectiles with a course-correction fuze

This article explores the design of a pitch/yaw axis load factor autopilot for a class of 155-mm spin-stabilized ammunition which incorporates a novel nose-positioned course correction fuze system used for trajectory correction. The projectile full nonlinear model is discussed and a procedure for ob...

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Vydáno v:Aerospace science and technology Ročník 42; s. 477 - 489
Hlavní autoři: Theodoulis, Spilios, Sève, Florian, Wernert, Philippe
Médium: Journal Article
Jazyk:angličtina
Vydáno: Elsevier Masson SAS 01.04.2015
Elsevier
Témata:
Actuators
Automatic
Automatic pilots
Autopilot design
Design engineering
Engineering Sciences
Flight mechanics
Gain-scheduling
Guided projectiles
Loads (forces)
LPV systems
Nonlinearity
Projectiles
Robust control
Stability
Trajectories
Robust control
Autopilot design
LPV systems
Guided projectiles
Gain-scheduling
Flight mechanics
ISSN:1270-9638, 1626-3219
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Shrnutí:This article explores the design of a pitch/yaw axis load factor autopilot for a class of 155-mm spin-stabilized ammunition which incorporates a novel nose-positioned course correction fuze system used for trajectory correction. The projectile full nonlinear model is discussed and a procedure for obtaining the system q-LPV model necessary for control synthesis is exposed. Important properties relevant to axis cross-coupling, internal modes and stability properties specific to this kind of system are also highlighted. A comparison of full- and reduced-order mixed-sensitivity H∞ linear compensators with an additional model following constraint for the design of the projectile autopilot is presented. Robust stability with respect to aerodynamic and actuator/sensor modeling uncertainties is verified via standard μ-analysis tools throughout the projectile flight envelope. Nonlinear 7-DoF trajectory simulation results are finally presented for a single or dual control surface actuator configuration.
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ISSN:1270-9638
1626-3219
DOI:10.1016/j.ast.2014.12.027