Optimal Control Of Spacecraft Rendezvous
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Optimal Control Of Spacecraft Rendezvous
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Author : Thomas Kong Wu
language : en
Publisher:
Release Date : 1970
Optimal Control Of Spacecraft Rendezvous written by Thomas Kong Wu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with Space vehicles categories.
Autonomous Time Optimal Spacecraft Rendezvous And Proximity Operations Using Stabilized Continuation
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Author : Emily Margaret Kollin
language : en
Publisher:
Release Date : 2016
Autonomous Time Optimal Spacecraft Rendezvous And Proximity Operations Using Stabilized Continuation written by Emily Margaret Kollin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
This thesis addresses the minimum-time rendezvous optimal control problem by implementing continuation with a stabilizing input. The rendezvous problem is first formulated as an optimal control problem which is then parameterized to enable the inclusion of the continuation parameter. A stabilizing input is then applied to attenuate the errors accumulated during the process of numerical integration. In this work, a state feedback stabilizing term with an additive open-loop control stabilizing term is implemented. By applying stabilized continuation to a rendezvous scenario in which two spacecraft are initialized in the same planar, circular orbit separated by some phase angle, a family of minimum-time rendezvous solutions is obtained for variable levels of thrust, mass flow rate, or initial phase angle separation. The approach is first demonstrated on a linear harmonic oscillator problem, and then applied to the Keplerian two-body motion model, with and without the inclusion of atmospheric drag perturbations. In addition to rendezvous trajectories, the approach is also applied to generate kinetic impact trajectories. This work considers only translational dynamics in two-dimensional space, however, the scope is not limited strictly to circular orbits. The effectiveness of the stabilized continuation scheme when used to generate minimum-time rendezvous and kinetic impact trajectories is demonstrated through simulations. The optimality of the solutions is verified with the Hamiltonian. The performance of the stabilized continuation scheme is compared against that of a direct shooting method, and the results obtained in this thesis are compared to other results from similar applications in the literature.
Guidance Navigation And Control For Spacecraft Rendezvous And Docking Theory And Methods
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Author : Yongchun Xie
language : en
Publisher: Springer Nature
Release Date : 2021-02-16
Guidance Navigation And Control For Spacecraft Rendezvous And Docking Theory And Methods written by Yongchun Xie and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-02-16 with Technology & Engineering categories.
This book focuses on the theory and design methods for guidance, navigation, and control (GNC) in the context of spacecraft rendezvous and docking (RVD). The position and attitude dynamics and kinematics equations for RVD are presented systematically in accordance with several different coordinate systems, including elliptical orbital frame, and recommendations are supplied on which of these equations to use in different phases of RVD. The book subsequently explains the basic principles and relative navigation algorithms of RVD sensors such as GNSS, radar, and camera-type RVD sensors. It also provides guidance algorithms and schemes for different phases of RVD, including the latest research advances in rapid RVD. In turn, the book presents a detailed introduction to intelligent adaptive control and proposes corresponding theoretical approaches to thruster configuration and control allocation for RVD. Emphasis is placed on the design method of active and passive trajectory protection in different phases of RVD, and on the safety design of the RVD mission as a whole. For purposes of verification, the Shenzhou spacecraft’s in-orbit flight mission is introduced as well. All issues addressed are described and explained from basic principles to detailed engineering methods and examples, providing aerospace engineers and students both a basic understanding of, and numerous practical engineering methods for, GNC system design in RVD.
Dynamics And Control Of Spacecraft Rendezvous By Nonlinear Model Predictive Control
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Author : Peng Li
language : en
Publisher:
Release Date : 2018
Dynamics And Control Of Spacecraft Rendezvous By Nonlinear Model Predictive Control written by Peng Li and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.
This doctoral research investigates the fundamental problems in the dynamics and control of spacecraft rendezvous with a non-cooperative tumbling target. New control schemes based on nonlinear model predictive control method have been developed and validated experimentally by ground-based air-bearing satellite simulators. It is focused on the autonomous rendezvous for a chaser spacecraft to approach the target in the final rendezvous stage. Two challenges have been identified and investigated in this stage: the mathematical modeling of the targets tumbling motion and the constrained control scheme that is solvable in an on-line manner. First, the mathematical description of the tumbling motion of the target spacecraft is proposed for the chaser spacecraft to rendezvous with the target. In the meantime, the practical constraints are formulated to ensure the safety and avoid collision during the final approaching stage. This set of constraints are integrated into the trajectory planning problem as a constrained optimization problem. Second, the nonlinear model predictive control is proposed to generate the feedback control commands by iteratively solving an open-loop discrete-time nonlinear optimal control problem at each sampling instant. The proposed control scheme is validated both theoretically and experimentally by a custom-built spacecraft simulator floating on a high-accuracy granite table. Computer software for electronic hardware for the spacecraft simulator and for the controller is designed and developed in house. The experimental results demonstrate the effectiveness and advantages of the proposed nonlinear model predictive control scheme in a hardware-in-the-loop environment. Furthermore, a preliminary outlook is given for future extension of the spacecraft simulator with consideration of the robotic arms.
Optimal Space Flight Navigation
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Author : Ashish Tewari
language : en
Publisher: Springer
Release Date : 2018-12-20
Optimal Space Flight Navigation written by Ashish Tewari and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-12-20 with Science categories.
This book consolidates decades of knowledge on space flight navigation theory, which has thus far been spread across various research articles. By gathering this research into a single text, it will be more accessible to students curious about the study of space flight navigation. Books on optimal control theory and orbital mechanics have not adequately explored the field of space flight navigation theory until this point. The opening chapters introduce essential concepts within optimal control theory, such as the optimization of static systems, special boundary conditions, and dynamic equality constraints. An analytical approach is focused on throughout, as opposed to computational. The result is a book that emphasizes simplicity and practicability, which makes it accessible and engaging. This holds true in later chapters that involve orbital mechanics, two-body maneuvers, bounded inputs, and flight in non-spherical gravity fields. The intended audience is primarily upper-undergraduate students, graduate students, and researchers of aerospace, mechanical, and/or electrical engineering. It will be especially valuable to those with interests in spacecraft dynamics and control. Readers should be familiar with basic dynamics and modern control theory. Additionally, a knowledge of linear algebra, variational methods, and ordinary differential equations is recommended.
Predictive Control For Spacecraft Rendezvous
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Author : Afonso Botelho
language : en
Publisher: Springer Nature
Release Date : 2021-06-24
Predictive Control For Spacecraft Rendezvous written by Afonso Botelho and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-06-24 with Technology & Engineering categories.
This brief addresses the design of model predictive control algorithms for performing space rendezvous manoeuvres. It consolidates developments within guidance and control algorithms, with the aim of improving the efficiency, safety, and autonomy of these manoeuvres. The brief presents several applications of model predictive control to rendezvous manoeuvres, including Ankersen zero-order-hold particular solution1, which provides a realistic thrust profile. It offers new approaches for rendezvous manoeuvres in elliptical orbits, formulating obstacle avoidance constraints, passive safety constraints, and robustness techniques. It also compares finite-horizon and variable-horizon formulations for model predictive control in the context of performance and computational complexity. Predictive Control for Spacecraft Rendezvous is accessible to academics and students new to the topics of orbital rendezvous and model predictive control, but also presents compelling subject matter for researchers and professionals in the aerospace industry.
Dynamics And Control Of Lorentz Augmented Spacecraft Relative Motion
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Author : Ye Yan
language : en
Publisher: Springer
Release Date : 2016-10-25
Dynamics And Control Of Lorentz Augmented Spacecraft Relative Motion written by Ye Yan and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-10-25 with Technology & Engineering categories.
This book develops a dynamical model of the orbital motion of Lorentz spacecraft in both unperturbed and J2-perturbed environments. It explicitly discusses three kinds of typical space missions involving relative orbital control: spacecraft hovering, rendezvous, and formation flying. Subsequently, it puts forward designs for both open-loop and closed-loop control schemes propelled or augmented by the geomagnetic Lorentz force. These control schemes are entirely novel and represent a significantly departure from previous approaches.
Optimal Control Sequence For Identical Dual Spacecraft Docking Missions In Geosynchronous Orbit
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Author : Michael J. Frostad
language : en
Publisher:
Release Date : 2006
Optimal Control Sequence For Identical Dual Spacecraft Docking Missions In Geosynchronous Orbit written by Michael J. Frostad and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Space vehicles categories.
On Energy Optimal Trajectories In Three Dimensions For The Terminal Phase Of Satellite Rendezvous
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Author : Terrance M. Carney
language : en
Publisher:
Release Date : 1963
On Energy Optimal Trajectories In Three Dimensions For The Terminal Phase Of Satellite Rendezvous written by Terrance M. Carney and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1963 with Orbital rendezvous (Space flight) categories.
Energy-optimal trajectories for terminal-stage satellite rendezvous in three dimensions are derived by the calculus of variations and generated numerically by using and adjoint iteration technique. Representative cases for near-earth rendezvous are examined, and the efficiency of a quasi-optimal technique and of the gravity-turn technique is determined by comparison.
Optimal Control With Aerospace Applications
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Author : James M Longuski
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-11-04
Optimal Control With Aerospace Applications written by James M Longuski and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-11-04 with Technology & Engineering categories.
Want to know not just what makes rockets go up but how to do it optimally? Optimal control theory has become such an important field in aerospace engineering that no graduate student or practicing engineer can afford to be without a working knowledge of it. This is the first book that begins from scratch to teach the reader the basic principles of the calculus of variations, develop the necessary conditions step-by-step, and introduce the elementary computational techniques of optimal control. This book, with problems and an online solution manual, provides the graduate-level reader with enough introductory knowledge so that he or she can not only read the literature and study the next level textbook but can also apply the theory to find optimal solutions in practice. No more is needed than the usual background of an undergraduate engineering, science, or mathematics program: namely calculus, differential equations, and numerical integration. Although finding optimal solutions for these problems is a complex process involving the calculus of variations, the authors carefully lay out step-by-step the most important theorems and concepts. Numerous examples are worked to demonstrate how to apply the theories to everything from classical problems (e.g., crossing a river in minimum time) to engineering problems (e.g., minimum-fuel launch of a satellite). Throughout the book use is made of the time-optimal launch of a satellite into orbit as an important case study with detailed analysis of two examples: launch from the Moon and launch from Earth. For launching into the field of optimal solutions, look no further!