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Sunday, May 3, 2020 | History

2 edition of Feedback control of a flexible spacecraft with robustness improvement. found in the catalog.

Feedback control of a flexible spacecraft with robustness improvement.

Bruce Baxter

Feedback control of a flexible spacecraft with robustness improvement.

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  • 20 Currently reading

Published by Brunel University in Uxbridge .
Written in English


Edition Notes

Thesis (M.Phil.) - Brunel University.

ContributionsBrunel University. Department of Electrical Engineering and Electronics.
The Physical Object
Pagination108p. :
Number of Pages108
ID Numbers
Open LibraryOL14473867M

There are many papers concerning control of flexible spacecraft. A maneuvering of a flexible spinning spacecraft is treated with variable structure control [11] where system is stabilized between seconds for small and large angl e maneuvers. An application with one sided dead-band for robust closed-loop control design for a flexible.   The State of the Art website is hosted by Small Spacecraft Virtual Institute (S3VI). For general questions about this website (i.e: general questions regarding smallsat engineering, workshop, component function, etc.) please send an email to [email protected] If you have a comment about the content of the online SoA report, such as corrections or additions to a chapter, . The Flexible Spacecraft Dynamics and Control program (FSD) was developed to aid in the simulation of a large class of flexible and rigid spacecraft. FSD is extremely versatile and can be used in attitude dynamics and control analysis as well as in-orbit support of deployment and control of spacecraft.


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Feedback control of a flexible spacecraft with robustness improvement. by Bruce Baxter Download PDF EPUB FB2

Flexible Spacecraft Dynamics, Control and Guidance: Technologies by Giovanni Campolo (Springer Aerospace Technology) - Kindle edition by Mazzini, Leonardo. Download it once and read it on your Kindle device, PC, phones or tablets.

Use features like bookmarks, note taking and highlighting while reading Flexible Spacecraft Dynamics, Control and Guidance: Technologies by Giovanni Campolo Manufacturer: Springer.

In this paper, control law design for single axis slewing maneuver of flexible spacecraft model is discussed. The control objective is attitude maneuver and simultaneous vibration control. Control law design is based upon the Lyapunov stability theory to achieve a stabilizing closed-loop system.

This paper addresses a composite two-time-scale control system for simultaneous three-axis attitude maneuvering and elastic mode stabilization of flexible spacecraft. By choosing an appropriate time coordinates transformation system, the spacecraft dynamics can be divided into double time-scale subsystems using singular perturbation theory (SPT).Cited by: 3.

The sensitivity to parameter un certainty resides in the observer rather than the feedback. A significant improvement in robust ness is obtained by substituting the observer by an adaptive observer in the control of the baseline flexible spacecraft. Constant feedback is used with no externally induced persistent by: 3.

Introduction. Feedback control systems where in the control loops are closed through a real-time network are called networked control systems (NCS).The defining feature of an NCS is that information (reference input, plant output, control input, etc.) is exchanged using a network among control system components (sensors, controller, actuators, etc.).

Interest has increased in the active control of vibrations in mechanically flexible systems, e.g. attitude control of flexible spacecraft, ride quality improvement of Cited by: H-infinity Inverse Optimal Attitude-Tracking Control of Rigid Spacecraft Article in Journal of Guidance Control and Dynamics 28(3) May with 67 Reads How Feedback control of a flexible spacecraft with robustness improvement.

book measure 'reads'. Application of H∞ control for multimodal vibration suppression of a slewing spacecraft using piezoelectric actuators is presented in this paper. For treating vibration suppression independent of attitude control law while taking into account relative modal responses; a method for modeling effect of attitude maneuver excitations as modal disturbances is by: 2.

Feedback Control: Linear, Nonlinear and Robust Techniques and Design with Industrial Applications (Advanced Textbooks in Control and Signal Processing) - Kindle edition by Dodds, Stephen J. Download it once and read it on your Kindle device, PC, phones or tablets.

Use features like bookmarks, note taking and highlighting while reading Feedback Control: Linear, Nonlinear and Robust Techniques 5/5(1). A control law is presented for three-axis rotational maneuvers of a spacecraft (orbiter)-beam-tip body (antenna or a reflector) configuration based on nonlinear inversion and modal velocity : Thawar Alnasiri.

To advance the research in the attitude tracking of a flexible spacecraft, we make use of the robust H∞ control design technique. The integrated robust controller, including an output feedback component and a feedforward component, is proposed to meet the multi-objective design requirements in the presence of disturbances, uncertain or time Cited by: 6.

In this paper, a robust control scheme for two spacecraft in formation subjected to time-variant external disturbances in the space environment was developed. The proposed controller consists of two parts, the first part is for the nominal system without disturbances and the second part is to compensate for effects of system disturbances.

A constraint equation-based control law design for large angle attitude maneuvers of flexible spacecraft is addressed in this paper. The tip displacement of the flexible spacecraft model is prescribed in the form of a constraint equation.

The controller design is attempted in the way that the constraint equation is satisfied throughout the. Input shaping is an established technique to generate prefilters so that flexible mechanical systems move with minimal residual vibration.

Many examples of such systems are found in engineering — for example, space structures, robots, cranes and so on. The problem of vibration control is serious when precise motion is required in the presence of structural flexibility. Robustness analysis of attitude and orbit control systems for flexible satellites Article in IET Control Theory and Applications 4(12) - January with 49 Reads How we measure 'reads'.

Robust Control of Non-linear Flexible Spacecraft M. Malekzadeh1;, A. Naghash1 and H.A. Talebi2 Abstract. In this paper, the problem of attitude control of a 1D non-linear exible spacecraft is investigated.

Three controllers are presented. The rst is a non-linear dynamic inversion, the second isCited by: 5. The paper deals with trajectory tracking for a flexible spacecraft, subject to a gravity-gradient disturbance, under parameter uncertainties.

The controls are gas jets and reaction wheels, and the measured variables describe the attitude and angular velocity of the rigid part. The flexible dynamics is treated as an additional disturbance acting on a rigid structure.

First, an adaptive control Cited by: MODELING AND SLEW-MANEUVER CONTROL OF A FLEXIBLE SPACECRAFT By Jeremy Eckhart This thesis was prepared under the direction of the candidate's thesis committee chair, Dr. Mahmut Reyhanoglu, Department of Physical Sciences, and has been approved by the members of his thesis committee.

It was submitted to the Department of Physical. spacecraft dynamics transfer function shown in Figure (a) is in the factorised attitude angle reference controller K s-plane attitude B denote JCD denote direction of increasing K. Interest has increased in the active control of vibrations in mechanically flexible systems, e.g.

attitude control of flexible spacecraft, ride quality improvement of air and surface transportation, and active optics.

To insure satisfactory performance of such systems, their distributed parameter nature must be taken into account in control system design. A more advanced control system is presented in [8]; a nonlinear adaptive output feedback control system for flexible-joint space manipulators.

To ensure stabilizing the boundary-layer model, a. This book is an up-to-date compendium on spacecraft attitude and orbit control (AOC) that offers a systematic and complete treatment of the subject with the aim of imparting the theoretical and practical knowledge that is required by designers, engineers, and researchers.

We propose a new robust optimal control strategy for flexible spacecraft attitude tracking maneuvers in the presence of external disturbances. An inverse optimal control law is designed based on a Sontag-type formula and a control Lyapunov function.

An adapted extended state observer is used to compensate for the total disturbances. The proposed controller can be expressed as the sum of an Cited by: 5.

Introduction Several Ways to control spacecraft attitude Difficult because: MIMO nonlinear system Parametric uncertainties Non-parametric uncertainties Will present a controller with the following components: PD feedback Feedforward –tracking response Adaptive –robustness to parametric Sliding Mode –robustness to non-parametric.

Read "Flexible Spacecraft Dynamics, Control and Guidance Technologies by Giovanni Campolo" by Leonardo Mazzini available from Rakuten Kobo. This book is an up-to-date compendium on spacecraft attitude and orbit control (AOC) that offers a systematic and comple Brand: Springer International Publishing.

Robustness of Natural Controls of Distributed-Parameter Systems Jai Hyuk Hwang, Jai Hyuk Hwang. Positive Position Feedback Control for Large Space Structures,” Robust Control of Flexible Spacecraft,” J.

Guidance and Control, Vol. by: 2. In this paper, we consider attitude control of flexible spacecraft via passivity-based control method. Although passivity-based control is known as one of the promising control methods for flexible spacecraft, it has the limitation in the control performance since the control law is.

Lin, J. G., “Closed-Loop Asymptotic Stability and Robustness Conditions for Large Space Systems With Reduced Order Controllers,” presented at the 20th IEEE Conf.

on Decision and Control, San Diego, IEEE Control Systems Society, Cited by: 3. Magnetic Attitude Control for Spacecraft with Flexible Appendages Julian Pierre Stellini Master of Applied Science Graduate Department of Aerospace Science and Engineering University of Toronto Abstract The design of an attitude control system for a flexible spacecraft using magnetic actuation is Author: Julian Pierre Stellini.

Nonlinear Passivity-Based Adaptive Control of Spacecraft Formation Flying Steve Ulrich 1 Abstract In this paper, a nonlinear output feedback adap-tive control system for spacecraft formation ying is developed.

Specically, the proposed approach addresses the problem File Size: 1MB. The control system consists of two main parts: (1) optimal input shaper is applied to the flexible manipulator to suppress the vibration and alleviate the effect of the vibration on the spacecraft; (2) ADRF is presented to mitigate the equivalent periodic disturbance caused by the nonlinear coupling between the spacecraft motion and the Cited by: 5.

Longman and K. Alfriend, “Optimal Control of Large Angle Attitude Maneuvers for Flexible Spacecraft,” Automatic Control in Space, Proceedings of the 8th International Conference, International Federation of Automatic Control, Oxford, England, JulyPergamon Press, Oxford,pp.

American Institute of Aeronautics and Astronautics Sunrise Valley Drive, Suite Reston, VA Robust Design of a Spacecraft Attitude Tracking Control System with Actuator Uncertainties Aranya Chakrabortty 1, Murat Arcak and Panagiotis Tsiotras2 1 Rensselaer Polytechnic Institute, Troy, NY 2 Georgia Institute of Technology, Atlanta, GA.

Emails: [email protected], [email protected], [email protected] Integrated Controls-Structures Design Methodology for Flexible Spacecraft E G.

Maghami,* S. Joshi, t and D. Price _ NASA Langley Research Center, Hampton, Virginia This paper proposes an approach for the design of flexible spacecraft, wherein the structural design and the control system design are performed simultaneously.

AbstractThe robust finite-time control for a flexible spacecraft attitude maneuver in the absence and presence of inertia uncertainties and external disturbances is investigated in.

nonlinear control design methods based on linearization, Lyapunov methods, center manifold theory, or zero dynamics cannot be used to asymptotically stabilize the spacecraft to any equilibrium attitude since there is no general procedure for the design of a discontinuous feedback control.

The adaptive NN controller-II, which employs a switching function to generate a switch between the robust control, using the smooth hyperbolic tangent function, and the adaptive NN control, can efficiently avoid the overestimation problem (i.e., the bound of the Chebyshev neural network’s output is larger than the corresponding bond of the.

Advances in Spacecraft Technologies Sating, R.R., "Development of an analog MIMO Quantitative Feedback Theory (QFT) CAD Package," Air Force Institute of Technology, Wright Patterson AFB, OH, AFIT/GE/ENG/92J, Ms Thesis, Shaked, U., Horowitz, I.

and Golde, S., "Synthesis of multivariable, basically non-interacting systems with significant plant uncertainty.,". vibration suppression of a flexible spacecraft. It is assumed that the system parameters are unknown. The design approach presented here treats the problem of spacecraft attitude control separately from the elastic vibration suppression problem.

As a stepping stone, a. required robustness. In view of these facts, there is a need for a systematic design methodology for the attitude (pointing) control of a spacecraft that guarantees certain stability margins while taking into. Flexible spacecraft plays an important role in communication, remote sensing and a variety of space related research works [1–4].However, the design of these appendages often involves the need for large, complex and light-weight space structures to achieve increased functionality at a reduced launch cost [].During the control of the rigid body attitude, the unwanted excitation of flexible Cited by: put feedback control, sliding mode control, fast output sam-pling feedback control, wave suppression method, indepen-dent modal space control method, modified independent modal space control method, mode localization, and optimum control based on the minimization of power supplied to the beam.

Figure 1. Flexible spacecraft model and by: 2.