Iterative control framework with application to guidance and attitude control of rockets

IF 5 1区工程技术 Q1 ENGINEERING, AEROSPACE

Aerospace Science and Technology Pub Date : 2024-10-28 DOI:10.1016/j.ast.2024.109691

Xun Liu, Hashem Ashrafiuon, Sergey G. Nersesov

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引用次数: 0

Abstract

Traditional control methods for nonlinear dynamical systems are predicated on verification of complex mathematical conditions related to the existence of a positive-definite Lyapunov function whose value must strictly decrease with time. Rigorous verification of Lyapunov conditions can be extremely difficult in real-world systems with high-dimensional and complex dynamics. In this paper, we present a novel control logic that can be readily applied to a general class of nonlinear systems irrespective of the complexities in their dynamics. The Iterative Control Framework (ICF) is designed to guarantee the convergence of the closed-loop system state to zero without a priori verification of Lyapunov-like conditions. The underlying computational routine runs in the background in real time and reconfigures the control vector at each time step in such a way that when the control input is applied to the system, the system trajectory reaches closer to the desired state. The technique is applicable to a broad class of complex nonlinear systems but is particularly suitable for systems inherently admitting control action of short duration such as missiles, rockets, satellites, and space vehicles. In this work, we focus on the application of ICF to guidance and attitude control of rockets and missiles where actuation is provided via single-use thrusters.

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应用于火箭制导和姿态控制的迭代控制框架

非线性动态系统的传统控制方法以验证复杂的数学条件为前提，这些条件与正有限 Lyapunov 函数的存在有关，该函数的值必须随时间严格递减。在具有高维和复杂动态的真实世界系统中，对 Lyapunov 条件进行严格验证极为困难。在本文中，我们提出了一种新颖的控制逻辑，无论非线性系统的动态如何复杂，它都能轻松地应用于一般的非线性系统。迭代控制框架（ICF）旨在保证闭环系统状态收敛为零，而无需事先验证类似 Lyapunov 的条件。底层计算程序在后台实时运行，并在每个时间步重新配置控制矢量，使控制输入应用到系统时，系统轨迹更接近所需的状态。该技术适用于各类复杂的非线性系统，但尤其适用于导弹、火箭、卫星和太空飞行器等固有的允许短时间控制行动的系统。在这项工作中，我们将重点关注 ICF 在火箭和导弹的制导和姿态控制中的应用，在这些系统中，通过一次性推进器提供驱动力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Aerospace Science and Technology 工程技术-工程：宇航

CiteScore

10.30

自引率

28.60%

发文量

654

审稿时长

54 days

期刊介绍： Aerospace Science and Technology publishes articles of outstanding scientific quality. Each article is reviewed by two referees. The journal welcomes papers from a wide range of countries. This journal publishes original papers, review articles and short communications related to all fields of aerospace research, fundamental and applied, potential applications of which are clearly related to: • The design and the manufacture of aircraft, helicopters, missiles, launchers and satellites • The control of their environment • The study of various systems they are involved in, as supports or as targets. Authors are invited to submit papers on new advances in the following topics to aerospace applications: • Fluid dynamics • Energetics and propulsion • Materials and structures • Flight mechanics • Navigation, guidance and control • Acoustics • Optics • Electromagnetism and radar • Signal and image processing • Information processing • Data fusion • Decision aid • Human behaviour • Robotics and intelligent systems • Complex system engineering. Etc.