Authors:
Yuh Yamashita,
Alberto Isidori,
Volume: 1, Page 1295 Paper number 1676
Abstract:
In this paper, global output regulation problem using state-feedback
for nonlinear systems with no relative degree is considered. We introduce
an invariant manifold on which tracking error tends to zero, and through
which we derive a coordinate transformation of state. By means of
the forwarding design method, it is shown that a simple feedback on
the new coordinate attains the global output regulation through singularities.
Authors:
Zhong-Ping Jiang,
Murat Arcak,
Volume: 1, Page 1301 Paper number 1232
Abstract:
This paper addresses the global asymptotic stabilization of nonlinear
systems in the presence of unmodeled dynamics appearing at the input.
The unmodeled dynamics are restricted to be minimum-phase and relative
degree zero. On the basis of nonlinear small-gain arguments, we design
a static feedback control law to achieve global asymptotic stabilization.
In the absence of full state information an observer-based control
design is developed.
Authors:
José A. Ruiz Vargas,
Elder M. Hemerly,
Volume: 1, Page 1307 Paper number 1097
Abstract:
We address the problem of adaptive state estimation for multivariable
nonlinear systems in the presence of parameter uncertainty and bounded
disturbances. The nonlinear adaptive observer uses a time varying gain
matrix and usual Lyapunov arguments are employed in order to guarantee
stability for the state and parameter errors. The presence of perturbations
are considered and no SPR assumption is required in order to prove
stability.
Authors:
Zhengtao Ding,
Volume: 1, Page 1309 Paper number 9605
Abstract:
This paper deals with global output regulation of uncertain nonlinear
systems affected by disturbances which are generated from a known exosystem.
The information needed for the control design is that the uncertain
system satisfies the geometric conditions for the output feedback form
with stable zero-dynamics and the parameterization is linear for unknown
constant parameters and the unmeasurable disturbances. This information
is minimum compared with the conditions specified in the literature
for global output regulation.
Authors:
Chiang-Cheng Chiang,
Zu-Hung Kuo,
Volume: 1, Page 1315 Paper number 88
Abstract:
Based on the combination of the sliding mode control with fuzzy control
and the simple adaptation laws, this paper presents a new and feasible
design algorithm to synthesize a robust fuzzy sliding mode controller
which can easily tackle the output tracking control problem of MIMO
nonlinear systems in the presence of higher-order and unmatched uncertainties
without the knowledge of the upper bounds on the norm of the uncertainties.
A series of computer simulations are included to verify the effectiveness
of the proposed design algorithm.
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