Journal ArticleDOI
Closed-form solutions to constrained control allocation problem
TLDR
This paper describes the results of recent research into the problem of allocating several flight control effectors to generate moments acting on a flight vehicle using various generalized inverse solutions and a hybrid solution utilizing daisy chaining.Abstract:
This paper describes the results of recent research into the problem of allocating several flight control effectors to generate moments acting on a flight vehicle. The results focus on the use of various generalized inverse solutions and a hybrid solution utilizing daisy chaining. In this analysis, the number of controls is greater than the number of moments being controlled, and the ranges of the controls are constrained to certain limits. The control effectors are assumed to be individually linear in their effects throughout their ranges of motion and independent of one another in their effects. A standard of comparison is developed based on the volume of moments or moment coefficients a given method can yield using admissible control deflections. Details of the calculation of the various volumes are presented. Results are presented for a sample problem involving 10 flight control effectors. The effectivenesses of the various allocation schemes are contrasted during an aggressive roll about the velocity vector at low dynamic pressure. The performance of three specially derived generalized inverses, a daisy-chaining solution, and direct control allocation are compared.read more
Citations
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Journal ArticleDOI
The quickhull algorithm for convex hulls
TL;DR: This article presents a practical convex hull algorithm that combines the two-dimensional Quickhull algorithm with the general-dimension Beneath-Beyond Algorithm, and provides empirical evidence that the algorithm runs faster when the input contains nonextreme points and that it used less memory.
BookDOI
Handbook of Marine Craft Hydrodynamics and Motion Control: Fossen/Handbook of Marine Craft Hydrodynamics and Motion Control
TL;DR: In this article, the authors present a survey of the latest tools for analysis and design of advanced guidance, navigation and control systems and present new material on underwater vehicles and surface vessels.
Journal ArticleDOI
Control allocation—A survey
Tor Arne Johansen,Thor I. Fossen +1 more
TL;DR: The objective of the present paper is to survey control allocation algorithms, motivated by the rapidly growing range of applications that have expanded from the aerospace and maritime industries, where control allocation has its roots, to automotive, mechatronics, and other industries.
Journal ArticleDOI
Fault tolerant control using sliding modes with on-line control allocation ☆
Halim Alwi,Christopher Edwards +1 more
TL;DR: In this paper, an on-line sliding mode control allocation scheme for fault tolerant control is proposed, where the effectiveness level of the actuators is used to redistribute the control signals to the remaining actuators when a fault or failure occurs.
Backstepping and control allocation with applications to flight control
TL;DR: In this paper, an adaptive backstepping and nonlinear observer design method is proposed for nonlinear control problems in flight control and the results are presented in a general framework and can also be applied to other areas.
References
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Journal ArticleDOI
The quickhull algorithm for convex hulls
TL;DR: This article presents a practical convex hull algorithm that combines the two-dimensional Quickhull algorithm with the general-dimension Beneath-Beyond Algorithm, and provides empirical evidence that the algorithm runs faster when the input contains nonextreme points and that it used less memory.
Book
Aircraft Control and Simulation
Brian L. Stevens,Frank L. Lewis +1 more
TL;DR: Equations of Motion Building the Aircraft Model Basic Analytical and Computational Tools Aircraft Dynamics and Classical Design Techniques Modern Design Techniques Robustness and Multivariable Frequency-Domain Techniques Digital Control Appendices Index.
Book
The theory of linear economic models
TL;DR: Gale as discussed by the authors provides a complete and lucid treatment of important topics in mathematical economics which can be analyzed by linear models, including games, linear programming, and the Neumann model of growth.
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The Theory of Linear Economic Models
TL;DR: Gale as mentioned in this paper provides a complete and lucid treatment of important topics in mathematical economics which can be analyzed by linear models, including games, linear programming, and the Neumann model of growth.
Journal ArticleDOI
Nonlinear inversion flight control for a supermaneuverable aircraft
TL;DR: In this article, the authors discuss the use of nonlinear dynamic inversion in the design of a flight control system for a Superman aircraft and compare it with a more conventional, gain-scheduled system and yield better performance in terms of lateral acceleration, sideslip, and control deflections.