Optimal proportional-integral guidance with reduced sensitivity to target maneuvers

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dc.contributor.authorHe, Shaoming
dc.contributor.authorLee, Chang-Hun
dc.date.accessioned2018-05-02T08:51:46Z
dc.date.available2018-05-02T08:51:46Z
dc.date.issued2018-04-09
dc.description.abstractThis paper proposes a new optimal guidance law based on proportional-integral (PI) concept to reduce the sensitivity to unknown target maneuvers. Compared to existing PI guidance laws, the proposed guidance command is derived in the optimal control framework while guaranteeing finite time convergence. The kinematics equation with respect to the zero-effortmiss (ZEM) is utilized and the integral ZEM is augmented as a new system state. The proposed guidance law is derived through the Schwarz's inequality method. The closed-form solution of proposed guidance law is presented to provide better insight of its properties. Additionally, the working principle of the integral command is investigated to show why the proposed guidance law is robust against unknown target accelerations. The analytical results reveal that the proposed optimal guidance law is exactly the same as an instantaneous direct model reference adaptive guidance law with a pre-specified reference model. The potential significance of the obtained results is that it can provide a point of connection between PI guidance laws and adaptive guidance laws. Therefore, it allows us to have better understanding of the physical meaning of both guidance laws and provides the possibility in designing a new guidance law that takes advantages of both approaches. Finally, the performance of the guidance law developed is demonstrated by nonlinear numerical simulations with extensive comparisons.en_UK
dc.identifier.citationHe S, Lee C-H, Optimal proportional-integral guidance with reduced sensitivity to target maneuvers, IEEE Transactions on Aerospace and Electronic Systems, Volume 54, Issue 5, October 2018, pp. 2568-2579en_UK
dc.identifier.issn0018-9251
dc.identifier.urihttp://dx.doi.org/10.1109/TAES.2018.2824678
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/13184
dc.language.isoenen_UK
dc.publisherIEEEen_UK
dc.rightsAttribution-NonCommercial 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/*
dc.subjectOptimal guidance lawen_UK
dc.subjectPI controlen_UK
dc.subjectTarget maneuveren_UK
dc.subjectSchwarz's inequalityen_UK
dc.subjectNavigationen_UK
dc.subjectAccelerationen_UK
dc.subjectMissilesen_UK
dc.subjectKinematicsen_UK
dc.subjectSensitivityen_UK
dc.subjectAdaptive controlen_UK
dc.titleOptimal proportional-integral guidance with reduced sensitivity to target maneuversen_UK
dc.typeArticleen_UK

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