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Stabilisation of a Flexible Spacecraft Subject to External Disturbance and Uncertainties

Yun Fu, Yu Liu, Lingyan Hu, Lingxi Peng
2020 Complexity  
This paper addresses the problems of vibration reduction and attitude tracking for a flexible spacecraft subject to external disturbances and uncertainties.  ...  Adaptive boundary control scheme is adopted to stabilize the vibration displacement of flexible appendage into a small neighbourhood of original position and simultaneously maintain attitude angle within  ...  procedure of the control strategy proposed in this paper for a flexible spacecraft system with external disturbances and parameter uncertainties.  ... 
doi:10.1155/2020/2906546 fatcat:3xugipnce5csxhijkudttre2mi

Fault tolerant control with H∞ performance for attitude tracking of flexible spacecraft

Q. Hu, M.I. Friswell, B. Xiao
2012 IET Control Theory & Applications  
A fault-tolerant control scheme with thruster redundancy is developed and applied to perform attitude tracking manoeuvres for an orbiting flexible spacecraft.  ...  bounded in the presence of an unknown inertia matrix, bounded disturbances and unknown faults.  ...  System uncertainties and external disturbances are two further challenges to be addressed in the design of attitude controllers.  ... 
doi:10.1049/iet-cta.2011.0496 fatcat:s3vndfxrdbgqfoyrtoxp5t6qtm

Attitude control for the rigid spacecraft with the improved extended state observer

Yuteng Cao, Qi Liu, Guiqin He, Qiuling Zhao, Fang Liu
2021 Applied Mathematics and Nonlinear Sciences  
The rotating solar array is considered a disturbance to the spacecraft. In the design of the controller, the coupled terms and the rotating solar array are considered a disturbance.  ...  In this article, a three-axis attitude manoeuvre spacecraft consisting of a central rigid body and a rotating solar array is studied.  ...  Acknowledgements: This work is supported by the National Natural Science Foundation of China (Grant No. 12002058) and the Project of promoting the connotation development of colleges and universities (  ... 
doi:10.2478/amns.2021.1.00024 fatcat:rpc445fmknfyvdvlu5ci2767gq

Robust fault-tolerant control for spacecraft attitude stabilisation subject to input saturation

Q. Hu, B. Xiao, M.I. Friswell
2011 IET Control Theory & Applications  
This study investigates the robust fault-tolerant attitude control of an orbiting spacecraft with a combination of unknown actuator failure, input saturation and external disturbances.  ...  Simulation studies are used to evaluate the closed-loop performance of the proposed control solution and illustrate its robustness to external disturbances, unknown actuator faults and even input saturation  ...  Acknowledgments The authors gratefully acknowledge the support of the  ... 
doi:10.1049/iet-cta.2009.0628 fatcat:iiws67dy5bdtvpyaqrsbkjtate

Planning natural repointing manoeuvres for nano-spacecraft

Craig Maclean, Daniele Pagnozzi, James Biggs
2014 IEEE Transactions on Aerospace and Electronic Systems  
In this paper the natural dynamics of a rigid body are exploited to plan attitude manoeuvres for a small spacecraft.  ...  By utilising the analytical solutions of the angular velocities and making use of Lax pair integration, the time evolution of the attitude of the spacecraft in a convenient quaternion form is derived.  ...  Environmental Model The spacecraft is subjected to disturbance torques due to gravity gradient [20] , SRP and air drag [28] , and the residual dipole of the spacecraft 2 .  ... 
doi:10.1109/taes.2014.130417 fatcat:u6qiw7tpmbb2hgsm5oi56lsfcm

Vibration suppression of an Euler-Bernoulli beam by backstepping iterative learning control

Yu Liu, Wenkang Zhan, Huan-Li Gao, Haiming Liu
2019 IET Control Theory & Applications  
This study puts forward a hybrid backstepping-boundary iterative learning control (B-BILC) to tackle vibration problem for an Euler-Bernoulli beam system subjected to an unknown external disturbance.  ...  Based on Lyapunov's synthesis method, a backstepping term and an iterative term are designed to reduce the vibration and attenuate the effects of the unknown boundary disturbance under the consideration  ...  Also, in [12] , adaptive robust control is employed to deal with the vibration of a flexible riser system with uncertainties and non-linearities.  ... 
doi:10.1049/iet-cta.2019.0011 fatcat:wp5xjmb2snfqhpgt67cd6v5dm4

Tutorial Review on Space Manipulators for Space Debris Mitigation

2019 Robotics  
We favour the implementation of spacecraft attitude stabilisation to ease some of the computational issues that will become critical as increasing level of autonomy are implemented.  ...  The core of the issue concerns the spacecraft mounting which reacts in response to the motion of the manipulator.  ...  , stability of grasp to disturbances and dynamic tactility.  ... 
doi:10.3390/robotics8020034 fatcat:6aorr2lxa5bdpfgpk7ttvsqbrq

A review of space tether research

M.P. Cartmell, D.J. McKenzie
2008 Progress in Aerospace Sciences  
The review paper attempts to provide a useful contextualised source of references for the student interested in learning about space tethers, and their potential for propulsion of payloads in Space.  ...  The overarching theme of the paper is to show the richness and diversity of tether modelling that has been undertaken in recent times, and to emphasise, by means of many different examples, that dynamics  ...  Michael Eiden for their interest in, and support of, the tether research that initiated at the University of Edinburgh in 1996 and which we then transferred to the University of Glasgow in 1998.  ... 
doi:10.1016/j.paerosci.2007.08.002 fatcat:qyz7ktg7hfdgjfeugncssz63o4

Extended Second Order Sliding Mode Control for Mismatched Uncertain Systems with Only Output Measurable

Van Van Huynh, Bui Le Ngoc Minh, Tam Minh Nguyen, Hoang Duy Vo
2018 Advances in Electrical and Electronic Engineering  
Finally, a vertical take-off and landing aircraft at the nominal airspeed of 135 knots is simulated to demonstrate the advantages and effectiveness of the proposed approach.  ...  The advantage of no need of all state variables in controller design makes the method more useful and realistic since it can be applied to a wider class of systems.  ...  For example, it is difficult to measure the variables describing the flexible motion, the modal position, and the velocity of flexible spacecraft [25] .  ... 
doi:10.15598/aeee.v16i4.2775 fatcat:qpn3fp776feungj4i5xmbnppgu

An Impacting Descent Probe for Europa and the Other Galilean Moons of Jupiter

P. Wurz, D. Lasi, N. Thomas, D. Piazza, A. Galli, M. Jutzi, S. Barabash, M. Wieser, W. Magnes, H. Lammer, U. Auster, L. I. Gurvits (+1 others)
2017 Earth, moon, and planets  
All in all, it is demonstrated how the descent probe has the potential to provide a high science return to a mission at a low extra level of complexity, engineering effort, and risk.  ...  The descent probe is a carry-on small spacecraft (< 100 kg), to be deployed by the mother spacecraft, that brings itself onto a collisional trajectory with the targeted planetary body in a simple manner  ...  Moreover, the flexibility in the release of the probe and the descent trajectory adjustment will add flexibility to access a plume that might be out of reach for the main spacecraft.  ... 
doi:10.1007/s11038-017-9508-7 fatcat:z2stugzggngxxgt6bhdnt5xdwm

Fractional-order adaptive non-singular fast terminal sliding mode control with time delay estimation for robotic manipulators

Yangyang Zhang, Xiaohui Yang, Peng Wei, Peter Xiaoping Liu
2020 IET Control Theory & Applications  
The chattering problem is solved by introducing a saturation function into the control signal. The TDE element is used to estimate the robot's unknown dynamic parameters and external disturbances.  ...  The proposed control algorithm is applied to a two-link robotic manipulator and the comparative results verify the effectiveness and superiority of the proposed control approach in comparison with existing  ...  Acknowledgments This paper was supported by the National Natural Science Foundation of China (51765042, 61662044, 61963026,11663005). References  ... 
doi:10.1049/iet-cta.2019.1302 fatcat:obcncyxpjbf3dfbdujgh6j22du

Atmospheric interaction with nanosatellites from observed orbital decay

A. Macario-Rojas, K.L. Smith, N.H. Crisp, P.C.E. Roberts
2018 Advances in Space Research  
The analysis uses the data of ten historical missions with documented passive attitude stabilisation strategies to reduce uncertainties.  ...  These aspects become relevant with the increasing applicability of nanosatellites to a broader range of missions objectives.  ...  The solid line shows the Langmuir fit (LF) for an aluminium surface, and the dashed line shows that of a glass surface to indicate possible variation due to material uncertainty.  ... 
doi:10.1016/j.asr.2018.02.022 fatcat:qufjbi2fsfdc7og3jkec4pousy

Atmospheric Drag, Occultation 'N' Ionospheric Scintillation (ADONIS) mission proposal [article]

Sebastian Hettrich, Yann Kempf, Nikolaos Perakis, Jȩdrzej Górski, Martina Edl, Jaroslav Urbár, Melinda Dósa, Francesco Gini, Owen W. Roberts, Stefan Schindler, Maximilian Schemmer, David Steenari (+5 others)
2017 arXiv   pre-print
The low-cost constellation can be launched using a single Vega rocket and most of the instruments are already space-proven allowing for rapid development and good reliability.  ...  During the workshop, four teams of 15 students each independently developed four different space mission proposals on the topic of "Space Weather: Science, Missions and Systems", supported by a team of  ...  Team Orange wants to thank our tutors Jaan Praks and Martin Volwerk for their support, dedication and contributions to our mission development.  ... 
arXiv:1701.05354v1 fatcat:l3neukhy2zasvfuu4njojgajvq

A Robust Observer—Based Adaptive Control of Second—Order Systems with Input Saturation via Dead-Zone Lyapunov Functions

Alejandro Rincón, Gloria M. Restrepo, Fredy E. Hoyos
2021 Computation  
controller leads to the convergence of the tracking error to a compact set whose width is user-defined, and it does not depend on upper bounds of model terms, state variables or disturbances; and (iii  ...  and providing robustness to uncertain model terms.  ...  by uncertainty on model parameters, dynamic coupling and external disturbances.  ... 
doi:10.3390/computation9080082 fatcat:4dgxs4umqncrznjbs26ch6hdta

The Australian Space Eye: studying the history of galaxy formation with a CubeSat [article]

Anthony Horton, Lee Spitler, Naomi Mathers, Michael Petkovic, Douglas Griffin, Simon Barraclough, Craig Benson, Igor Dimitrijevic, Andrew Lambert, Anthony Previte, John Bowen, Solomon Westerman, Jordi Puig-Suari (+5 others)
2016 arXiv   pre-print
The Space Eye will exploit the low level of systematic errors achievable with a small space based telescope to enable high accuracy measurements of the optical extragalactic background light and low surface  ...  This project is also a demonstrator for several technologies with general applicability to astronomical observations from nanosatellites.  ...  ACKNOWLEDGMENTS This research made use of Astropy, a community-developed core Python package for astronomy, 28 and the affiliated package ccdproc. 29 Some of the results in this paper have been derived  ... 
arXiv:1606.06960v1 fatcat:3juukglanzfebmpvom3ujjsezu
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