Zobrazeno 1 - 10
of 79
pro vyhledávání: '"I. Michael Ross"'
Publikováno v:
Journal of Guidance, Control, and Dynamics. 42:810-821
The article of record as published may be found at http://dx.doi.org/10.2514/1.G003816 The agility of a rigid-body spacecraft can be expressed in terms of a geometric, three-dimensional, solid called the agilitoid. Originally developed as a means for
Publikováno v:
Journal of Guidance Control and Dynamics, vol 38, iss 7
Motivated by uncertain parameters in nonlinear dynamic systems, we define a nonclassical optimal control problem where the cost functional is given by a Riemann-Stieltjes "functional of a functional." Using the properties of Riemann-Stieltjes sums, a
Publikováno v:
Journal of Guidance, Control, and Dynamics. 37:1069-1079
Shortest-time maneuvers are constrained time-optimal slews that enable spacecraft to be maneuvered more quickly than conventional rotations. Shortest-time maneuvers can increase a spacecraft’s imaging capability without any changes to the hardware.
Autor:
I. Michael Ross, Mark Karpenko
Publikováno v:
Annual Reviews in Control. 36:182-197
The home space for optimal control is a Sobolev space. The home space for pseudospectral theory is also a Sobolev space. It thus seems natural to combine pseudospectral theory with optimal control theory and construct “pseudospectral optimal contro
Publikováno v:
AIAA/AAS Astrodynamics Specialist Conference.
Publikováno v:
ACC
In recent papers, we have shown that a Lebesgue-Stieltjes optimal control theory forms the foundations for unscented optimal control. In this paper, we further our results by incorporating uncertain mixed state-control constraints in the problem form
Publikováno v:
AIAA Guidance, Navigation, and Control Conference.
Unscented optimization offers a simple approach for solving stochastic programming problems. Optimization problems with uncertainty appear in nearly all aspects of guidance and control: air-traffic control, missile guidance, mission planning, pilot m
Publikováno v:
Journal of Guidance, Control, and Dynamics. 34:1219-1227
The trajectory optimization of a spacecraft subject to the gravitational effects of the moon, Earth, and sun are considered. The problem is how to achieve Earth-interface conditions from a low lunar orbit. Practical constraints of maximum thrust, fue
Publikováno v:
The Journal of the Astronautical Sciences. 58:81-97
This paper examines the performance of the pseudospectral optimal control scheme for closed-loop time-optimal attitude maneuvering of the NPSAT1 spacecraft, a magnetically actuated spacecraft designed and built at the Naval Postgraduate School. The c
Publikováno v:
Journal of Guidance, Control, and Dynamics. 33:623-628
AMONG the various pseudospectral (PS) methods for optimal control [1], only the Legendre PS method has been mathematically proven to guarantee the feasibility, consistency, and convergence of the approximations [2–5]. As exemplified by its experime