Zobrazeno 1 - 10
of 12
pro vyhledávání: '"John Junkins"'
Autor:
Sandeep Singh, John Junkins
A supervised stochastic learning method called the Gaussian Process Regression (GPR) is used to design an autonomous guidance law for low-thrust spacecraft. The problems considered are both of the time- and fuel-optimal regimes and a methodology base
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cf01929c7533846de08bd4e8de236925
https://doi.org/10.21203/rs.3.rs-1930082/v1
https://doi.org/10.21203/rs.3.rs-1930082/v1
Publikováno v:
AIAA Modeling and Simulation Technologies Conference.
Recently, The Land, Air and Space Robotics (LASR) Laboratory has demonstrated a state-of-the-art proximity operations testbed that will revolutionize the concept of portable space systems simulation. The Holonomic Omni-directional Motion Emulation Ro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7c218e63dcb8cf47bea40b93bbe1141b
https://doi.org/10.2514/6.2010-8223
https://doi.org/10.2514/6.2010-8223
Autor:
Drew Woodbury, Julie Parish, Allen Parish, Michael Swanzy, Ron Denton, Daniele Mortari, John Junkins
Publikováno v:
AIAA/AAS Astrodynamics Specialist Conference and Exhibit.
This paper will discuss the implementation of a Stellar Positioning System (SPS) as well as techniques for error mitigation in experimentation and data post-processing. The hardware used during the development and testing of the SPS will be described
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::700f075dbf29552f8c41bb8336a94e91
https://doi.org/10.2514/6.2008-6755
https://doi.org/10.2514/6.2008-6755
Autor:
Manoranjan Majji, John Junkins
Publikováno v:
AIAA Guidance, Navigation, and Control Conference and Exhibit.
The eigenstructure assignment scheme for robust multivariable state feedback control is extended to redundantly actuated dynamical systems. The fact that the plants that are atleast square allow for the exact assignment of an arbitrary orthonormal se
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ec1804d1d9d9d15641aaa57c53a70a7b
https://doi.org/10.2514/6.2006-6235
https://doi.org/10.2514/6.2006-6235
Autor:
Adam Miller, Lance Traub, Othon Redeniotis, Puneet Singla, Monish Tandale, John Junkins, Matthew Zeiger
Publikováno v:
42nd AIAA Aerospace Sciences Meeting and Exhibit.
In this paper, a continuing research effort is detailed aimed at effecting practical hinge-less closed- loop flow control of wings. The systematic evolution of syntheticlpneumatic actuators suitable for this purpose, via distributed actuation, is des
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bcfb2577a566770347288cdfb79ec685
https://doi.org/10.2514/6.2004-224
https://doi.org/10.2514/6.2004-224
Publikováno v:
Guidance, Navigation, and Control Conference.
A novel method is presented to carry out near-minimum-time maneuvers of a spacecraft of unknown inertia. The formulation assumes the presence of three orthogonal reaction wheels located near the system mass center and oriented arbitrarily with respec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8b8108367c3c17effb0a133a4bb73153
https://doi.org/10.2514/6.1997-3480
https://doi.org/10.2514/6.1997-3480
Autor:
John Junkins, Hanspeter Schaub
Publikováno v:
35th Aerospace Sciences Meeting and Exhibit.
An improved method is presented to parameterize a smoothly time varying, symmetric, positive dee nite system mass matrix M(t) in terms of the instantaneous eigenfactors, namely, the eigenvalues and eigenvectors of M(t). Differential equations are des
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::85ed4942480225823bb706834ede1e00
https://doi.org/10.2514/6.1997-248
https://doi.org/10.2514/6.1997-248
Autor:
John Junkins
Publikováno v:
35th Aerospace Sciences Meeting and Exhibit.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2f0bd39f286756cec3dab6576cddb8e7
https://doi.org/10.2514/6.1997-2
https://doi.org/10.2514/6.1997-2
Publikováno v:
35th Aerospace Sciences Meeting and Exhibit.
A generalized feedback control law design methodology is presented that applies to systems under control saturation constraints. Lyapunov stability theory is used to develop stable saturated control laws that can be augmentedtoanyunsaturatedcontrolla
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e62a73332440eb134275b5f2eae51881
https://doi.org/10.2514/6.1997-112
https://doi.org/10.2514/6.1997-112
Publikováno v:
Celestial Mechanics & Dynamical Astronomy; Aug2009, Vol. 104 Issue 4, p355-368, 14p