Search
Now showing items 1-10 of 10
An Improved Algorithm for Solving Constrained Optimal Control Problems
(1994)
Motivated by the need to have an algorithm which (1) can solve generally constrained optimal control problems, (2) is globally convergent, (3) has a fast local convergence rate, a new algorithm, which solves fixed end-time ...
G-Snakes: Nonholonomic Kinematic Chains on Lie Groups
(1994)
We consider kinematic chains evolving on a finite-dimensional Lie group G under nonholonomic constraints, where snake-like global motion is induced by shape variations of the system. In particular, we consider the case ...
Techniques for Designing Rotorcraft Control Systems, Final Report
(1994)
Over the last two and a half years we have been demonstrating a new methodology for the design of rotorcraft flight control systems (FCS) to meet handling qualities requirements. This method is based on multicriterion ...
Design Choices and Usage of the Portable CONSOL Environment
(1994)
This document deals with the design choices and goals of the Portable CONSOL, project. The original version of CONSOL-OPTCAD, a software package for the optimization-based design of engineering systems developed at the ...
Dynamics and Stability of Spacecraft with Fluid-Filled Containers
(1994)
In this dissertation, we study the dynamics, stability and control of spacecraft with fluid-filled containers. The spacecraft with fluid-filled containers is modeled as a rigid body containing perfect fluid. A general model ...
Motion Control of Drift-Free, Left-Invariant Systems on Lie Groups
(1994)
In this paper we address the constructive controllability problem for drift free, left-invariant systems on finite-dimensional Lie groups with fewer controls than state dimension. We consider small (e) amplitude, low-frequency, ...
Motion Control of Drift-Free, Left-Invariant Systems on Lie Groups, Part II: A General Constructive Control Algorithm
(1994)
In this paper we present a general algorithm for constructing open-loop controls to solve the complete constructive controllability problem for drift-free invariant systems on Lie groups that satisfy the Lie algebra ...
Active Vibration Damping by Parametric Control
(1994)
In recent years, smart composites have been introduced in the market that open up new possibilities for controlling or sensing flexible structures. Internal properties of these composite materials which are either embedded ...
Coherent Signal Processing Using Arrays of Arbitrary Geometry
(1994)
The existing spatial smoothing (SS) technique, although it is effective in decorrelating coherent signals, can only be applied to uniformly spaced linear arrays which are very sensitive to the directions-of-arrival (DOA's) ...
User's Guide for CFSQP Version 2.0: A C Code for Solving (Large Scale) Constrained Nonlinear (Minimax) Optimization Problems, Generating Iterates Satisfying All Inequality Constraints
(1994)
CFSQP is a set of C functions for the minimization of the maximum of a set of smooth objective functions (possibly a single one) subject to general smooth constraints. If the initial guess provided by the user is infeasible ...