Tethered towing using open-loop input-shaping and discrete thrust levels

Jasper, Lee; Schaub, Hanspeter

doi:10.1016/j.actaastro.2014.10.001

Cited by 43 publications

(10 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Experiments concerning the stabilization of a spinning debris using flexible tethers have not been performed. The assumption of the tethers being rigidly attached to the target is also widely used to investigate the control aspects of towing a debris out of orbit using a TSS [38,[40][41][42][43][44]. The towing phase of the mission begins after the target has been both securely captured and stabilized.…”

Section: Previous Workmentioning

confidence: 99%

Detumbling Space Debris Using Tethers

Hovell¹

View full text Add to dashboard Cite

The population of debris in Earth orbit has exponential growth due to cascaded collisions between orbiting debris. It is critical that high-risk pieces of debris are actively removed to limit the natural growth of the space debris population. A popular strategy to capture space debris is with tethered nets. Detumbling the debris after capture represents one of the outstanding challenges associated with tethered capture of debris.This thesis presents a new tether configuration that passively enhances the detumbling ability of the tethered net system, and compares it to the presently-accepted tether configuration. A new laboratory facility was developed to allow for an experimental comparison. Both simulation and experimental results agree that the novel tether configuration outperforms the presently-accepted configuration at detumbling debris. The experimental results are the first, to the best of the author's knowledge, to demonstrate the detumbling of debris using tethers.iii Acknowledgements I sincerely thank my supervisor, Steve Ulrich. Without him, I would have never considered pursuing graduate studies, nor would I have fallen in love with research.

show abstract

Section: Previous Workmentioning

confidence: 99%

Detumbling Space Debris Using Tethers

Hovell¹

View full text Add to dashboard Cite

show abstract

“…Discretized tether model has been widely used in the previous studies [9][10][11][12][13]. It accounts for transverse oscillations of the tether and adds only little complexity into the system.…”

Section: Equations Of Motionmentioning

confidence: 99%

“…The dynamics of the electrodynamic tethers and their interaction with the Earth's plasma and magnetic is the active field of research [1,23]. Towing the inactive target via a tether continuous to be a promising idea, and is being widely investigated [8][9][10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

“…This approach, however, can be challenging due to the discrete on/off thruster capabilities. Several discrete thrust input shaping techniques are studied in [11]. These approaches are more realistic for on-off thrusters and offer better performance with respect to a step input in terms of end bodies collision avoidance and target attitude motion.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Debris Rotation Analysis During Tethered Towing for Active Debris Removal

Jaworski

Lappas

Tsourdos

et al. 2017

Journal of Guidance, Control, and Dynamics

Self Cite

View full text Add to dashboard Cite

“…The TST system without proper control strategy [3,4] is vulnerable to system failures such as tether slackness, winding with the tug and the target. Aimed at these unsolved problems, scholars have carried out some useful studies, e.g., input-shaping-based thrust control scheme to prevent collision [5], and propulsion control to maintain tether tight during deorbiting large debris [6].…”

Section: Introductionmentioning

confidence: 99%

Neural-network-based terminal sliding-mode control for thrust regulation of a tethered space-tug

Zhong

2018

Astrodyn

View full text Add to dashboard Cite

This paper studies the thrust regulation of the tethered space-tug in order to stabilize the target towed by a flexible tether. To compromise between model accuracy and simplicity, a rigid-flexible coupling multi-body model is proposed as the full model of the tethered space-tug. More specifically, the tug and the towed target are assumed as rigid bodies, whereas the flexible tether is approximated as a series of hinged rods. The rods are assumed extensible but incompressible. Then the equations of motion of the multi-body system are derived based on the recursive dynamics algorithm. The attitude motion of the towed target is stabilized by regulating the thrust on the tug, whereas the tether-tension-caused perturbation to the tug's attitude motion is eliminated by the control torque on the tug. The

show abstract

Tethered towing using open-loop input-shaping and discrete thrust levels

Cited by 43 publications

References 18 publications

Detumbling Space Debris Using Tethers

Detumbling Space Debris Using Tethers

Debris Rotation Analysis During Tethered Towing for Active Debris Removal

Neural-network-based terminal sliding-mode control for thrust regulation of a tethered space-tug

Contact Info

Product

Resources

About