Fast model predictive control of the nadir singularity in electro-optic systems

Anderson, D. , McGookin, M. and Brignall, N. (2009) Fast model predictive control of the nadir singularity in electro-optic systems. Journal of Guidance, Control, and Dynamics, 32(2), pp. 626-632. (doi: 10.2514/1.30762)

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Civilian airborne directed-countermeasure electro-optic systems require the simplest, most affordable, sightline pointing and stabilization system: a two-axis gimbal. Two-axis gimbal tracking and jamming effectiveness degrades as the line of sight approaches the outer gimbal axis: the gimbal lock, keyhole, or nadir singularity condition. Our novel implementation of fast model predictive control in the position loop minimizes the tracking error by predicting the singularity. A second novel algorithm predicts the future set-point trajectory. This predictive controller yields near-optimal tracking performance without a priori slew-rate knowledge.

Item Type:Articles
Glasgow Author(s) Enlighten ID:McGookin, Dr Meghan and Anderson, Dr David
Authors: Anderson, D., McGookin, M., and Brignall, N.
College/School:College of Science and Engineering > School of Engineering > Autonomous Systems and Connectivity
Journal Name:Journal of Guidance, Control, and Dynamics
Publisher:American Institute of Aeronautics and Astronautics
ISSN (Online):1533-3884

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
416861Nonlinear sightline controlDavid AndersonEngineering & Physical Sciences Research Council (EPSRC)EP/D057558/1Aerospace Sciences
370951Improved inverse simulation using nonlinear predictive methodsDouglas ThomsonEngineering & Physical Sciences Research Council (EPSRC)GR/S91024/01Aerospace Sciences