Zobrazeno 1 - 10
of 74
pro vyhledávání: '"B L Pierson"'
Publikováno v:
Guidance, Navigation, and Control Conference.
The analytical basis and calculations for second-order expansions about discrete-parameter approximations of optimal trajectories are described in order to facilitate approximation of neighboring optimal control feedback gains. The scope of the prese
Autor:
B. L. Pierson, R. J. O'doherty
Publikováno v:
International Journal of Systems Science. 5:187-200
Several algorithms based on the multiplier or augmented penalty function method for minimizing a function subject to equality constraints are surveyed and compared numerically. These methods employ an approximation of the Lagrange multiplier to incre
Autor:
B L Pierson
Publikováno v:
Aeronautical Quarterly. 28:75-84
SummaryA class of dynamic sailplane winch-launch trajectory problems for maximum altitude is formulated. Numerical solutions are presented for representative values of maximum allowed lift coefficient and cable acceleration. The optimal trajectory is
Autor:
B L Pierson
Publikováno v:
Computer Methods in Applied Mechanics and Engineering. 57:37-49
This work features the application of an optimal control algorithm to a new class of continuous one-dimensional structural design problems. A sandwich beam of rectangular cross-section is considered. It has a variable-thickness core and two equal var
Autor:
B. L. Pierson, S. Y. Ong
Publikováno v:
Mathematical and Computer Modelling. 12(8):925-934
Sequential quadratic programming is used to solve several minimum-fuel flight path optimization problems for a point-mass aircraft flying in a vertical plane. Each optimal control problem involves two control functions: a ''steering'' control and a '
Autor:
R. J. O'Doherty, B. L. Pierson
Publikováno v:
Journal of Optimization Theory and Applications. 14:393-403
Three augmented penalty function algorithms are tested and compared with an ordinary penalty function algorithm for two demonstration optimal control problems. Although the augmented penalty function is quite helpful in solving control problems with
Publikováno v:
Journal of Robotic Systems. 4:355-375
The off-line-programming software and hardware being developed for robotic welding of the Space Shuttle main engine are described and illustrated with diagrams, drawings, graphs, and photographs. The menu-driven workstation-based interactive programm
Autor:
J. K. Willoughby, B. L. Pierson
Publikováno v:
International Journal of Systems Science. 4:45-57
The projection operator usually associated with the steepest descent solution of constrained optimal control problems is developed by analogy to the familiar finite-dimensional projection matrix. The equivalence of two different derivations appearing
Autor:
B. L. Pierson
Publikováno v:
International Journal of Control. 16:1193-1196
An interesting refinement scheme suggested by Mehra (1909) for use with the conjugate gradient algorithm is modified and applied to both finite and infinite dimensional optimization problems in an attempt to improve the convergence rate of the algori
Autor:
S. G. Rajtora, B. L. Pierson
Publikováno v:
IEEE Transactions on Systems Science and Cybernetics. 6:240-242
The Davidon method as extended by Tripathi and Narendra [1], [2] is applied to optimal control problems with terminal state constraints adjoined to the cost functional as penalty functions. The results of two numerical examples indicate that this alg