Fuel Time Optimal Control Of Spacecraft Maneuvers
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Fuel Time Optimal Control Of Spacecraft Maneuvers
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Author : Shin-Whar Liu
language : en
Publisher:
Release Date : 1996
Fuel Time Optimal Control Of Spacecraft Maneuvers written by Shin-Whar Liu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with categories.
Robust On Off Pulse Control Of Flexible Space Vehicles
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Author : National Aeronautics and Space Adm Nasa
language : en
Publisher:
Release Date : 2018-11-14
Robust On Off Pulse Control Of Flexible Space Vehicles written by National Aeronautics and Space Adm Nasa and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-11-14 with categories.
The on-off reaction jet control system is often used for attitude and orbital maneuvering of various spacecraft. Future space vehicles such as the orbital transfer vehicles, orbital maneuvering vehicles, and space station will extensively use reaction jets for orbital maneuvering and attitude stabilization. The proposed robust fuel- and time-optimal control algorithm is used for a three-mass spacing model of flexible spacecraft. A fuel-efficient on-off control logic is developed for robust rest-to-rest maneuver of a flexible vehicle with minimum excitation of structural modes. The first part of this report is concerned with the problem of selecting a proper pair of jets for practical trade-offs among the maneuvering time, fuel consumption, structural mode excitation, and performance robustness. A time-optimal control problem subject to parameter robustness constraints is formulated and solved. The second part of this report deals with obtaining parameter insensitive fuel- and time- optimal control inputs by solving a constrained optimization problem subject to robustness constraints. It is shown that sensitivity to modeling errors can be significantly reduced by the proposed, robustified open-loop control approach. The final part of this report deals with sliding mode control design for uncertain flexible structures. The benchmark problem of a flexible structure is used as an example for the feedback sliding mode controller design with bounded control inputs and robustness to parameter variations is investigated. Wie, Bong and Sinha, Ravi Unspecified Center ATTITUDE CONTROL; FLEXIBLE SPACECRAFT; JET CONTROL; ORBIT TRANSFER VEHICLES; ORBITAL MANEUVERING VEHICLES; ROBUSTNESS (MATHEMATICS); SPACE STATIONS; ALGORITHMS; ATTITUDE STABILITY; FEEDBACK CONTROL; OPTIMAL CONTROL; TIME OPTIMAL CONTROL...
Fast Satellite Attitude Maneuver And Control
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Author : Dong Ye
language : en
Publisher: Academic Press
Release Date : 2022-08-02
Fast Satellite Attitude Maneuver And Control written by Dong Ye and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-08-02 with Technology & Engineering categories.
Fast Satellite Attitude Maneuver and Control introduces the concept of agile satellites and corresponding fast maneuver attitude control systems, systematically and comprehensively presenting recent research results of fast maneuver attitude control for agile satellites by using advanced nonlinear control techniques. This reference book focuses on modeling and attitude control, considering different actuator combinations, actuator installation deviation, actuator fault, and flexible appendage coupling effect for agile satellites. The book provides a unified platform for understanding and applicability of agile satellites fast maneuverer and stabilization control for different purposes. It will be an excellent resource for researchers working on spacecraft design, nonlinear control systems, vehicle systems and complex control systems. Unifies existing and emerging concepts concerning nonlinear control theory, fault tolerant, and attitude control for agile satellites Provides a series of the latest results, including, but not limited to, fast maneuverer and stabilization control, hybrid actuator control, nonlinear attitude control, fault tolerant control, and active vibration suppression towards agile satellites Comprehensively captures recent advances of theory, technological aspects and applications of fast maneuverer and stabilization control in agile satellites Addresses research problems in each chapter, along with numerical and simulation results that reflect engineering practice and demonstrate the focus of developed analysis and synthesis approaches Contains comprehensive, up-to-date references, which play an indicative role for further study
Design Of Trajectory Optimization Approach For Space Maneuver Vehicle Skip Entry Problems
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Author : Runqi Chai
language : en
Publisher: Springer
Release Date : 2019-07-30
Design Of Trajectory Optimization Approach For Space Maneuver Vehicle Skip Entry Problems written by Runqi Chai and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-07-30 with Technology & Engineering categories.
This book explores the design of optimal trajectories for space maneuver vehicles (SMVs) using optimal control-based techniques. It begins with a comprehensive introduction to and overview of three main approaches to trajectory optimization, and subsequently focuses on the design of a novel hybrid optimization strategy that combines an initial guess generator with an improved gradient-based inner optimizer. Further, it highlights the development of multi-objective spacecraft trajectory optimization problems, with a particular focus on multi-objective transcription methods and multi-objective evolutionary algorithms. In its final sections, the book studies spacecraft flight scenarios with noise-perturbed dynamics and probabilistic constraints, and designs and validates new chance-constrained optimal control frameworks. The comprehensive and systematic treatment of practical issues in spacecraft trajectory optimization is one of the book’s major features, making it particularly suited for readers who are seeking practical solutions in spacecraft trajectory optimization. It offers a valuable asset for researchers, engineers, and graduate students in GNC systems, engineering optimization, applied optimal control theory, etc.
Spacecraft Maneuver With Performance Guaranteed
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Author : Yufeng Gao
language : en
Publisher: Springer Nature
Release Date :
Spacecraft Maneuver With Performance Guaranteed written by Yufeng Gao and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.
Fuel Optimal Retrothrust Control Programs For Propulsive Soft Landing Maneuvers In The Presence Of Drag
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Author : A. Bejczy
language : en
Publisher:
Release Date : 1969
Fuel Optimal Retrothrust Control Programs For Propulsive Soft Landing Maneuvers In The Presence Of Drag written by A. Bejczy and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1969 with Drag (Aeronautics) categories.
A fuel-optimal retrothrust control program is demonstrated to be significantly superior to an acceleration-type control law for the terminal phase of a propulsive soft-landing mission to an atmospheric planet, using either a vertical trajectory or a gravity-turn ballistic trajectory. These trajectories are considered under conditions in which (1) the drag depends quadratically on the velocity and inverse-exponentially on the altitude, (2) it is desirable to reach zero velocity at zero altitude, and (3) the terminal value of the ballistic path angle is unspecified. The equivalent terminal-value optimal control problem (maximazing the final mass of the space vehicle), which could be termed an "Inverse" Goddard Problem, is treated by applying Pontryagin's Maximum Principle. It is proved that for both types of trajectories, the fuel-optimal retrothrust control program is always of the bang-bang type, composed of only two sections in the optimal control sequence. The fuel-optimal retrothrust control, when compared with the results of the acceleration-type control law, gives a decrease of 35% and 55% in fuel consumption for the vertical and ballistic trajectories, respectively, and a decrease of 45% and 75% in required controlled landing time for the two types of trajectories, respectively.
Optimal Control Of Maneuver Induced Vibration In Flexible Aero And Space Vehicles
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Author : Dean Karnopp
language : en
Publisher:
Release Date : 1966
Optimal Control Of Maneuver Induced Vibration In Flexible Aero And Space Vehicles written by Dean Karnopp and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1966 with categories.
Forces applied to a large, flexible aero or space vehicle in order to change the vehicle's attitude or position will in general also excite undesirable vibration. The added cost in terms of time, complexity of thrust pattern and fuel or total control effort required to effect a given maneuver when the unwanted vibration is suppressed is studied in this paper. Techniques for interpreting optimal solutions to these problems are given based on the use of multiple phase plane plots. (Author).
Optimal Control Of Electrodynamic Tethers
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Author :
language : en
Publisher:
Release Date : 2008
Optimal Control Of Electrodynamic Tethers written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
Low thrust propulsion systems offer a fuel-efficient means to maneuver satellites to new orbits, however they can only perform such maneuvers when they are continuously operated for a long time. Such long-term maneuvers occur over many orbital revolutions often rendering short time scale trajectory optimization methods ineffective. An approach to long time scale, multirevolution optimal control of an electrodynamic tether is investigated for a tethered satellite system in Low Earth Orbit with atmospheric drag. Optimal control problems are constructed in such a way as to maneuver the satellite to new orbits while minimizing a cost function subject to the constraints of the time-averaged equations of motion by controlling current in the tether. The method of averaging is employed to transform the optimal control problem from the time domain into a Fourier space where the complex problem is drastically reduced to a Zermelo type problem that is solved using a pseudospectral method. Optimal control solutions are determined that maneuver an electrodynamic tether to new orbits over long time scales while managing librational motion using only current in a wire. Results are simulated using a higher fidelity?truth? model to validate the controller performance.
Spacecraft Dynamics And Control
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Author : Marcel J. Sidi
language : en
Publisher: Cambridge University Press
Release Date : 1997
Spacecraft Dynamics And Control written by Marcel J. Sidi and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Science categories.
This 1997 book explains basic theory of spacecraft dynamics and control and the practical aspects of controlling a satellite.
On Orbit Operations Optimization
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Author : Leping Yang
language : en
Publisher: Springer
Release Date : 2014-06-13
On Orbit Operations Optimization written by Leping Yang and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-06-13 with Mathematics categories.
On-orbit operations optimization among multiple cooperative or noncooperative spacecraft, which is often challenged by tight constraints and shifting parameters, has grown to be a hot issue in recent years. The authors of this book summarize related optimization problems into four planning categories: spacecraft multi-mission planning, far-range orbital maneuver planning, proximity relative motion planning and multi-spacecraft coordinated planning. The authors then formulate models, introduce optimization methods, and investigate simulation cases that address problems in these four categories. This text will serve as a quick reference for engineers, graduate students, postgraduates in the fields of optimization research and on-orbit operation mission planning.