Results 201 to 210 of about 1,024,729 (244)

Robust adaptive stabilizer for nominally stabilizable discrete plants

Proceedings of the 2003 American Control Conference, 2003., 2004
This paper presents an indirect adaptive control scheme for discrete linear time-invariant nominally nonnecessarily controllable and stabilizable systems. The scheme is a pole- placement type without requiring the plant inverse stability assumption. The adaptive stabilizability and the robustness of this system under the presence of unmodeled dynamics ...
Santi Alonso-Quesada, M. De la Son
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Adaptive robust stabilization of dynamic nonholonomic chained systems

Journal of Robotic Systems, 2001
AbstractIn this article, the stabilization problem is investigated for dynamic nonholonomic systems with unknown inertia parameters and disturbances. First, to facilitate control system design, the nonholonomic kinematic subsystem is transformed into a skew‐symmetric form and the properties of the overall systems are discussed.
Shuzhi Sam Ge, J. Wang, Tong Heng Lee, G. Y. Zhou   +3 more
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On global robust adaptive stabilization for cascaded nonlinear systems

Proceedings of the 2003 American Control Conference, 2003., 2004
This paper presents a technical framework utilizing the dissipativity mechanism that gives rise to the solution of the global regulation problem of the cascade-connected systems subject to both dynamic uncertainty and static uncertainty without knowing the bound of the static uncertainty.
Zhiyong Chen 0001, Jie Huang 0001
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Multiestimation scheme for robust adaptive stabilization of discrete systems

42nd IEEE International Conference on Decision and Control (IEEE Cat. No.03CH37475), 2004
A discrete pole placement-based adaptive controller with multiestimation is synthesized for linear time-invariant plants. A high-level switching structure between the various estimation schemes is used to supervise the re-parameterization of the adaptive controller in real time.
Santi Alonso-Quesada, M. De Ia Sen, Aitor Bilbao-Guillerna, Aitor J. Garrido   +3 more
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Adaptive robust stabilization of dynamic nonholonomic chained systems

Proceedings of the 39th IEEE Conference on Decision and Control (Cat. No.00CH37187), 2002
In this paper, the stabilization problem is investigated for dynamic nonholonomic systems with unknown inertia parameters and disturbances. Firstly, the nonholonomic kinematic subsystem is transformed into a skew-symmetric form and the properties of the overall systems are discussed.
Sam S. Ge, G. Y. Zhou
openaire   +1 more source

Stability, robustness, and performance issues in second level adaptation

2014 American Control Conference, 2014
A new approach, described as second level adaptation, was introduced in [1] for the control of unknown linear time-invariant plants using multiple identification models. If θ p ∈ R n , the unknown parameter vector of an LTI system lies in the convex hull P(t 0 ) of (n+1) vectors θ i (t 0 ) (initial values of adaptive vectors) in parameter ...
Kumpati S. Narendra, Yu Wang 0091, Wei Chen   +2 more
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Robust stability analysis of adaptation algorithms for single perceptron

IEEE Transactions on Neural Networks, 1991
The problem of robust stability and convergence of learning parameters of adaptation algorithms in a noisy environment for the single preceptron is addressed. The case in which the same input pattern is presented in the adaptation cycle is analyzed. The algorithm proposed is of the Widrow-Hoff type.
Stefen Hui, Stanislaw H. Zak
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ROBUSTNESS OF MULTIVARIABLE NON-LINEAR ADAPTIVE FEEDBACK STABILIZATION

IFAC Proceedings Volumes, 1983
Abstract Here considered is the stabilizing property of the adaptive nonlinear dynamic feedback control proposed in (Hmamed and Radouane, 1983) for multivariable systems in the presence of uncertainty. A multivariable system is decomposed into a set of single-input subsystems and the second Luenberger canonical form is obtained.
A. Hmamed, L. Radouane
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Assessment of stability robustness for adaptive controllers

IEEE Transactions on Automatic Control, 1983
The problem of improving the stability characteristics of discrete-time SISO reduced order adaptive controllers is addressed in this note. A method is proposed to adjust the observer poles of an indirect adaptive scheme in order to ensure stability of the closed-loop system in spite of possible unstructured uncertainties (e.g., process-model order ...
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A robust video stabilization system by adaptive motion vectors filtering

2008 IEEE International Conference on Multimedia and Expo, 2008
Digital video stabilization allows to acquire video sequences without disturbing jerkiness, removing unwanted camera movements. In this paper we propose a novel fast video stabilization algorithm based on block matching of local motion vectors. Some of these vectors are properly filtered out by making use of ad-hoc rules taking into account local ...
Sebastiano Battiato, Giovanni Puglisi, Arcangelo Bruna   +2 more
openaire   +3 more sources