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Author : Pawel Lukaszynski
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (13 download)
Download or read book Attitude Control Hardware and Software for Nanosatellites written by Pawel Lukaszynski and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Gordon, Karsten
Publisher : Universitätsverlag der TU Berlin
ISBN 13 : 3798329680
Total Pages : 197 pages
Book Rating : 4.7/5 (983 download)
Download or read book A flexible attitude control system for three-axis stabilized nanosatellites written by Gordon, Karsten and published by Universitätsverlag der TU Berlin. This book was released on 2018-03-15 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis investigates a new concept for the flexible design and verification of an ADCS for a nanosatellite platform. In order to investigate guidelines for the design of a flexible ADCS, observations of the satellite market and missions are recorded. Following these observations, the author formulates design criteria which serve as a reference for the conceptual design of the flexible ADCS. The research of the thesis was carried out during the development of TU Berlin's nanosatellite platform TUBiX20 and its first two missions, TechnoSat and TUBIN. TUBiX20 targets modularity, reuse and dependability as main design goals. Based on the analysis of design criteria for a flexible ADCS, these key design considerations for the TUBiX20 platform were continued for the investigations carried out in this thesis. The resulting concept implements the ADCS as a distributed system of devices complemented by a hardware-independent core application for state determination and control. Drawing on the technique of component-based software engineering, the system is partitioned into self-contained modules which implement unified interfaces. These interfaces specify the state quantity of an input or output but also its unit and coordinate system, complemented by a mathematical symbol for unambiguous documentation. The design and verification process for the TUBiX20 ADCS was also elaborated during the course of this research. The approach targets the gradual development of the subsystem from a purely virtual satellite within a closed-loop simulation to the verification of the fully integrated system on an air-bearing testbed. Finally, the concurrent realization of the investigated concept within the TechnoSat and TUBIN missions is discussed. Starting with the individual ADCS requirements, the scalability of the approach is demonstrated in three stages: from a coarse, but cost- and energy-efficient configuration to realize a technology demonstration mission with moderate requirements (TechnoSat) to a high-performance configuration to support Earth observation missions (TUBIN). Diese Dissertation untersucht ein neues Konzept zur flexiblen Entwicklung und Verifikation eines Lageregelungssystems für eine Nanosatellitenplattform. Als Grundlage für die Erarbeitung eines Leitfadens für die Entwicklung werden zunächst Beobachtung des Satellitenmarkts sowie konkreter Missionen zusammengetragen. Darauf aufbauend formuliert der Autor Entwurfskriterien für die Konzipierung eines flexiblen Lageregelungssystems. Die Dissertation wurde im Rahmen der Entwicklung der TUBiX20 Nanosatellitenplattform und ihrer ersten beiden Missionen, TechnoSat und TUBIN, an der TU Berlin durchgeführt. TUBiX20 verfolgt Modularität, Wiederverwendung und Zuverlässigkeit als Entwicklungsziele. Diese werden unter der Verwendung der vom Autor hergeleiteten Entwurfskriterien in dieser Arbeit im Kontext des Lageregelungssystems verfeinert. Das resultierende Konzept setzt dieses als verteiltes System von Geräten und einem hardware-unabhängigen Software-Kern um. Der Software-Entwurfstechnik Component-based software engineering folgend ist das System in unabhängige Module unterteilt, welche wiederum einheitliche Schnittstellen implementieren. Diese Schnittstellen spezifizieren die Zustandsgrößen für die Ein- und Ausgänge der Module inklusive Einheit, Koordinatensystem und mathematischem Symbol für eine eindeutige Darstellung. Der Entwurfs- und Verifikationsprozess für das TUBiX20 Lageregelungssystem wurde vom Autor im Rahmen der Arbeit untersucht. Hier verfolgt der Ansatz einen schrittweisen übergang von einem virtuellen Satelliten als Simulationsmodell bis hin zur Verifikation des integrierten Systems auf einem Lageregelungsteststand. Abschließend diskutiert die Arbeit die Realisierung des untersuchten Konzepts im Rahmen der Missionen TechnoSat und TUBIN. Beginnend mit den jeweiligen Anforderungen wird die Skalierbarkeit des Ansatzes in drei Stufen demonstriert: von einer groben, aber kosten- und energieeffizienten Konfiguration für eine Technologieerprobungsmission mit moderaten Anforderungen (TechnoSat) bis hin zu einer Konfiguration für hochgenaue Lageregelung als Basis für Erdbeobachtungsmissionen (TUBIN).
Author : Jesse Frey
Publisher :
ISBN 13 :
Total Pages : 164 pages
Book Rating : 4.:/5 (9 download)
Download or read book Hardware and Software Implementation of a Low Power Attitude Control and Determination System for CubeSats written by Jesse Frey and published by . This book was released on 2014 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years there has been a growing interest in smaller satellites. Smaller satellites are cheaper to build and launch than larger satellites. One form factor, the CubeSat, is especially popular with universities and is a 10 cm cube. Being smaller means that the mass and power budgets are tighter and as such new ways must be developed to cope with these constraints. Traditional attitude control systems often use reaction wheels with gas thrusters which present challenges on a CubeSat. Many CubeSats use magnetic attitude control which uses the Earth's magnetic field to torque the satellite into the proper orientation. Magnetic attitude control systems fall into two main categories: active and passive. Active control is often achieved by running current through a coil to produce a dipole moment, while passive control uses the dipole moment from permanent magnets that consume no power. This thesis describes a system that uses twelve hard magnetic torquers along with a magnetometer. The torquers only consume current when their dipole moment is flipped, thereby significantly reducing power requirements compared with traditional active control. The main focus of this thesis is on the design, testing and fabrication of CubeSat hardware and software in preparation for launch.
Author : Marc Fournier
Publisher :
ISBN 13 : 9780494760529
Total Pages : 208 pages
Book Rating : 4.7/5 (65 download)
Download or read book Attitude Determination and Control Hardware Development for Small Satellites written by Marc Fournier and published by . This book was released on 2011 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of a small spacecraft attitude determination and control subsystem is described. This subsystem is part of The Space Flight Laboratory's Generic Nanosatellite Bus. With a 20cm3 body, the bus has an attitude determination and control subsystem capable of full three-axis stabilization and control enabling more advanced missions previously only possible with bulkier and more power-consuming attitude control hardware. Specific contributions to the Space Flight Lab's attitude control hardware are emphasised. Particularly, the full development of a 32g three-axis nanosatellite rate sensing unit is described. This includes embedded software development, skew calibration, hardware modeling and qualification testing for the unit. Development work on a three-axis boom-mounted magnetometer is also detailed. A full hardware design is also described for a new microsatellite-sized rate sensor. Larger and more powerful than the nanosatellite rate sensors, the design ensures a low noise, low drift architecture to improve attitude determination on future microsatellite missions.
Author : Joshua Francis Reginald O'Neill
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (134 download)
Download or read book Development of an Attitude Control System for CubeSat Application written by Joshua Francis Reginald O'Neill and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Guidance, navigation, and control (GNC) systems are commonly found in vehicles, whether they be spacecraft, aircraft, seacraft or landcraft. These systems are designed to bring the vehicle to its desired position and/or orientation by sensing pose and making the necessary adjustments to onboard devices. With regard to satellites, GNC systems are divided into two segments: orbit control, which is concerned with the spacecraft's position, and attitude control, which is concerned with the spacecraft's orientation. The focus of this thesis is to develop the attitude control system of a CubeSat nanosatellite being designed for the University of Prince Edward Island's SpudNik-1 mission. The objective of this study was to progress the design of the attitude control system (ACS) from its conceptual design phase to a state where it is ready for assembly, integration, and testing. To accomplish this, the engineering design process was applied. Accordingly, the fundamentals of attitude control were first reviewed in literature. Then, the system-level requirements were evaluated and the current design's ability to meet them was assessed. After doing so, the necessary alterations were made to the conceptual design, such that it would meet the requirements, and the various methods of requirement verification were defined to verify that this is the case during the assembly, integration, and testing phase. Once the system-level design had been established, this process was repeated for the subsystem- and unit-level designs. In addition to contributing the detailed design of an attitude control system to the Spudnik-1 team, this work can also serve as a reference for other teams working toward space missions that require the use of an ACS by providing a comprehensive perspective that focuses on the identification, integration, and implementation of the major elements of an attitude control system. It not only offers detailed information on the definition, measurement, modeling, estimation, and control of a spacecraft's attitude, but also identifies: the connections between these concepts; the hardware used to implement the concepts in a real-world application; and the various considerations that should be taken during this implementation. Aside from familiarizing the reader with the methodology behind an ACS system, this work also describes the procedure that was used to develop the attitude control subsystem of the SpudNik-1 CubeSat. It details: how the requirements of the attitude control subsystem were identified from the spacecraft's mission and the corresponding system requirements; how the major components and concepts of the ACS are identified from the subsystem requirements, and integrated through the subsystem architecture; how the unit-level requirements are identified based on the subsystem-level design; and how the implementation of the various components and concepts is dependent on the unit level requirements. While a good deal of the design is standard with regard to CubeSats and other aerospace projects, the original aspects would relate to the in-house design of the reaction wheels and fine sun sensors. Being as there are a wide selection of ACS components available on the market, it is most common for CubeSat projects to procure their hardware. Although the lack of flight heritage did pose additional risk to the mission in comparison to using commercial equipment, the in-house design allowed the components to be both tailored to the mission and produced at a fraction of the cost. If the designs manage to gain flight heritage on-board of the SpudNik-1 CubeSat, then this work will provide readers with standard frameworks which will allow them to reap the same benefits, but at a lower level of risk.
Author : Zheng You
Publisher : Butterworth-Heinemann
ISBN 13 : 0128126736
Total Pages : 441 pages
Book Rating : 4.1/5 (281 download)
Download or read book Space Microsystems and Micro/Nano Satellites written by Zheng You and published by Butterworth-Heinemann. This book was released on 2017-11-22 with total page 441 pages. Available in PDF, EPUB and Kindle. Book excerpt: Space Microsystems and Micro/Nano Satellites covers the various reasoning and diverse applications of small satellites in both technical and regulatory aspects, also exploring the technical and operational innovations that are being introduced in the field. The Space Microsystem developed by the author is systematically introduced in this book, providing information on such topics as MEMS micro-magnetometers, MIMUs (Micro-inertia-measurement unit), micro-sun sensors, micro-star sensors, micro-propellers, micro-relays, etc. The book also examines the new technical standards, removal techniques or other methods that might help to address current problems, regulatory issues and procedures to ameliorate problems associated with small satellites, especially mounting levels of orbital debris and noncompliance with radio frequency and national licensing requirements, liabilities and export controls, Summarizing the scientific research experiences of the author and his team, this book holds a high scientific reference value as it gives readers comprehensive and thorough introductions to the micro/nano satellite and space applications of MEMS technology. Covers various reasoning and diverse applications for small satellites in both technical and regulatory aspects Represents the first publication that systematically introduces the Space Microsystem developed by the author Examines new technical standards, removal techniques and other methods that might help to address current problems, regulatory issues and procedures
Author : Deddy Gunawi
Publisher :
ISBN 13 :
Total Pages : 82 pages
Book Rating : 4.E/5 ( download)
Download or read book Attitude Determination and Control System for the Dawgstar Nanosatellite written by Deddy Gunawi and published by . This book was released on 2004 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Alan W. Hewston
Publisher :
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.:/5 (317 download)
Download or read book Attitude Control Subsystem for the Advanced Communications Technology Satellite written by Alan W. Hewston and published by . This book was released on 1996 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michael Paluszek
Publisher : Elsevier
ISBN 13 : 0323985416
Total Pages : 740 pages
Book Rating : 4.3/5 (239 download)
Download or read book ADCS - Spacecraft Attitude Determination and Control written by Michael Paluszek and published by Elsevier. This book was released on 2023-04-27 with total page 740 pages. Available in PDF, EPUB and Kindle. Book excerpt: ADCS - Spacecraft Attitude Determination and Control provides a complete introduction to spacecraft control. The book covers all elements of attitude control system design, including kinematics, dynamics, orbits, disturbances, actuators, sensors, and mission operations. Essential hardware details are provided for star cameras, reaction wheels, sun sensors, and other key components. The book explores how to design a control system for a spacecraft, control theory, and actuator and sensor details. Examples are drawn from the author’s 40 years of industrial experience with spacecraft such as GGS, GPS IIR, Mars Observer, and commercial communications satellites, and includes historical background and real-life examples. Features critical details on hardware and the space environment Combines theory and ready-to-implement practical algorithms Includes MATLAB code for all examples Provides plots and figures generated with the included code
Author : Carlos Diez Garcia
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (122 download)
Download or read book Study and Development of Attitude Control and Determination Simulation Software and Control Algorithms for 3Cat-4 Mission written by Carlos Diez Garcia and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The AOCS of a spacecraft is the responsible for determining the attitude of the satellite and controlling it to reach a specific pointing state, to alloww the execution of scientific experiments on board. In the case of 3Cat-4 mission, a magnetic control system is used to align the deployable helix antenna with the Nadir vector to perform the GNSS-R and L-band radiometry experiments for Earth Observation. This task is especially complex to perform in nanosatellites due to the limitations of mass, size, and power consumption. To analyze the performance of this subsystem, facilities (Helmholtz coils, TVAC, Sun simulator) are used that try to emulate the environment in which the satellite will operate, but this is not always possible and for this reason this project has been carried out. In this project, a simulation software programmed in MATLAB has been developed to analyze the performance of the AOCS subsystem. This tool has been used to validate the design and verify the compliance with the subsystem requirements, but also to support the design phase. In addition, the simulator has been used to analyze the AOCS of the 3Cat-4 mission developed by the UPC NanoSat Lab. This document explains the physics behind each of the blocks modeled to emulate the space environment, implementing the equations that govern the orbial dynamics and attitude of the satellite and including the disturbance forces that affect a satellite in orbit LEO . In addition, the development of the attitude determination and control system, both of the hardware part (i.e. sensors and actuators) and of the estimation and control algorithms, is presented. In particular, the Optimal-REQUEST algorithm has been implemented and the control laws for the Detumbling and Nadir Pointing Mode modes, corresponding to the 3Cat-4 mission, have been developed. The results of the analysis showthe correct operation of the simulator and the compliance of the subsystem requirements of the 3Cat-4 mission. The control modes meet the objectives defined, i.e. the detumbling mode is capable to stabilize the system and reduce the angular velocity of the CubeSat below 2°/s in less than 24 hours and the Nadir Pointing mode allows to reach the pointing towards Nadir, with a maximum angular deviation of 10° and angular velocity of 0.5°/s in the X and Y axes of the satellite. On the other hand, the results show the great negative impact of the aerodynamic drag, due to the physical characteristics of the CubeSat and the orbit in which it is located, causing the control system to have to be continuously active to compensate for the disturbances and reach the desired attitude state. 2.
Author : Fredric William Long
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (983 download)
Download or read book Design and Testing of a Nanosatellite Simulator Reaction Wheel Attitude Control System written by Fredric William Long and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Attitude control of a satellite is required for the pointing of communications antennas and other instruments. For this reason, a control algorithm capable of precision pointing is important. Because the process of sending a satellite into space is time consuming and costly, ground-based methods of testing are paramount. A simulator is a low-cost, ground based system made to mimic the conditions of a weightless satellite in space. The simulator used in this project controls attitude through applying torque to reaction wheels. The objective of this project is to derive and test a control algorithm for the attitude control of a satellite simulator.
Author : T. Hikmet Karakoc
Publisher : Springer Nature
ISBN 13 : 3031299337
Total Pages : 291 pages
Book Rating : 4.0/5 (312 download)
Download or read book New Achievements in Unmanned Systems written by T. Hikmet Karakoc and published by Springer Nature. This book was released on 2023-06-27 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unmanned systems are one of the fastest-growing and widely developing technologies in the world, offering many possibilities for a variety of research fields. This book comprises the proceedings of the 2021 International Symposium on Unmanned Systems and the Defense Industry (ISUDEF), a multi-disciplinary conference on a broad range of current research and issues in areas such as autonomous technology, unmanned aircraft technologies, avionics, radar systems, air defense, aerospace robotics and mechatronics, and aircraft technology design. ISUDEF allows researchers, scientists, engineers, practitioners, policymakers, and students to exchange information, present new technologies and developments, and discuss future direction, strategies, and priorities in the field of autonomous vehicles and unmanned aircraft technologies. Covers a range of emerging topics; Addresses current issues on autonomous vehicles and unmanned aircraft; Full proceedings of ISUDEF 2021 held at Howard University.
Author : Jonathan R. Schoenberg
Publisher :
ISBN 13 :
Total Pages : 124 pages
Book Rating : 4.E/5 ( download)
Download or read book An Attitude Determination and Control System for the Cornell Nanosatellite written by Jonathan R. Schoenberg and published by . This book was released on 2003 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Chantal Cappelletti
Publisher : Academic Press
ISBN 13 : 012817885X
Total Pages : 500 pages
Book Rating : 4.1/5 (281 download)
Download or read book CubeSat Handbook written by Chantal Cappelletti and published by Academic Press. This book was released on 2020-09-25 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: CubeSat Handbook: From Mission Design to Operations is the first book solely devoted to the design, manufacturing, and in-orbit operations of CubeSats. Beginning with an historical overview from CubeSat co-inventors Robert Twiggs and Jordi Puig-Suari, the book is divided into 6 parts with contributions from international experts in the area of small satellites and CubeSats. It covers topics such as standard interfaces, on-board & ground software, industry standards in terms of control algorithms and sub-systems, systems engineering, standards for AITV (assembly, integration, testing and validation) activities, and launch regulations. This comprehensive resource provides all the information needed for engineers and developers in industry and academia to successfully design and launch a CubeSat mission. Provides an overview on all aspects that a CubeSat developer needs to analyze during mission design and its realization Features practical examples on how to design and deal with possible issues during a CubeSat mission Covers new developments and technologies, including ThinSats and PocketQubeSats
Author : J.R. Wertz
Publisher : Springer Science & Business Media
ISBN 13 : 9400999070
Total Pages : 877 pages
Book Rating : 4.4/5 (9 download)
Download or read book Spacecraft Attitude Determination and Control written by J.R. Wertz and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 877 pages. Available in PDF, EPUB and Kindle. Book excerpt: Roger D. Werking Head, Attitude Determination and Control Section National Aeronautics and Space Administration/ Goddard Space Flight Center Extensiye work has been done for many years in the areas of attitude determination, attitude prediction, and attitude control. During this time, it has been difficult to obtain reference material that provided a comprehensive overview of attitude support activities. This lack of reference material has made it difficult for those not intimately involved in attitude functions to become acquainted with the ideas and activities which are essential to understanding the various aspects of spacecraft attitude support. As a result, I felt the need for a document which could be used by a variety of persons to obtain an understanding of the work which has been done in support of spacecraft attitude objectives. It is believed that this book, prepared by the Computer Sciences Corporation under the able direction of Dr. James Wertz, provides this type of reference. This book can serve as a reference for individuals involved in mission planning, attitude determination, and attitude dynamics; an introductory textbook for stu dents and professionals starting in this field; an information source for experimen ters or others involved in spacecraft-related work who need information on spacecraft orientation and how it is determined, but who have neither the time nor the resources to pursue the varied literature on this subject; and a tool for encouraging those who could expand this discipline to do so, because much remains to be done to satisfy future needs.
Author : Mohammed Chessab Mahdi
Publisher :
ISBN 13 : 9781527506510
Total Pages : 170 pages
Book Rating : 4.5/5 (65 download)
Download or read book Attitude Stablization for CubeSat written by Mohammed Chessab Mahdi and published by . This book was released on 2018 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explores CubeSat technology, and develops a nonlinear mathematical model of a spacecraft with the assumption that the satellite is a rigid body. It places emphasis on the CubeSat subsystem, orbit dynamics and perturbations, the satellite attitude dynamic and modeling, and components of attitude determination and the control subsystem. The book focuses on the attitude stabilization methods of spacecraft, and presents gravity gradient stabilization, aerodynamic stabilization, and permanent magnets stabilization as passive stabilization methods, and spin stabilization and three axis stabilization as active stabilization methods. It also discusses the need to develop a control system design, and describes the design of three controller configurations, namely the ProportionalIntegralDerivative Controller (PID), the Linear Quadratic Regulator (LQR), and the Fuzzy Logic Controller (FLC) and how they can be used to design the attitude control of CubeSat three-axis stabilization. Furthermore, it presents the design of a suitable attitude stabilization system by combining gravity gradient stabilization with magnetic torquing, and the design of magnetic coils which can be added in order to improve the accuracy of attitude stabilization. The book then investigates, simulates, and compares possible controller configurations that can be used to control the currents of magnetic coils when magnetic coils behave as the actuator of the system.
Author : Michael R. Greene
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (133 download)
Download or read book The Attitude Determination and Control System of the Generic Nanosatellite Bus written by Michael R. Greene and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Generic Nanosatellite Bus (GNB) is a spacecraft platform designed to accommodate the integration of diverse payloads in a common housing of supporting components. The development of the GNB at the Space Flight Laboratory (SFL) under the Canadian Advanced Nanospace eXperiment (CanX) program provides accelerated access to space while reducing non-recurring engineering (NRE) costs. The work presented herein details the development of the attitude determination and control subsystem (ADCS) of the GNB. Specific work on magnetorquer coil assembly, integration, and testing (AIT) and reaction wheel testing is included. The embedded software development and unit-level testing of the GNB sun sensors are discussed. The characterization of the AeroAstro star tracker is also a major focus, with procedures and results presented here. Hardware models were developed and incorporated into SFL's in-house high-fidelity attitude dynamics and control simulation environment. This work focuses on specific contributions to the CanX-3, CanX-4&5, and AISSat-1 nanosatellite missions.
