文章基本信息

标题：Nonlinear Dynamic Inversion Autopilot Design for Dual-Spin Guided Projectiles
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作者：Steven Tipán ; Sovanna Thai ; Michael Proff 等
期刊名称：IFAC PapersOnLine
印刷版ISSN：2405-8963
出版年度：2020
卷号：53
期号：2
页码：14827-14832
DOI：10.1016/j.ifacol.2020.12.1926
语种：English
出版社：Elsevier
摘要：AbstractThis paper deals with the autopilot design for a 155-mm dual-spin projectile equipped with a course correction fuze (CCF). This class of projectiles is subject to high nonlinearities and to strongly coupled dynamics between its pitch and yaw channels. To overcome these difficulties a Nonlinear Dynamic Inversion (NDI) based autopilot is proposed. This autopilot possesses a cascade structure where an inner loop linearises the nonlinear system dynamics and an outer loop enables to impose the desired system closed-loop dynamics. The configuration of a dual-spin projectile requires the development of two separate control loops, one for the roll channel and another for the pitch/yaw channels. The pitch/yaw controller is developed under a Time Scale Separation (TSS) scheme. This not only helps to accelerate the design of the control laws but also to achieve a satisfactory level of robustness. The autopilots are also validated with a nonlinear 7-DOF simulation.
关键词：KeywordsNonlinear Dynamic InversionTime Scale SeparationGuided projectiles