Adaptive sampled-data integral control of stable infinite-dimensional linear systems (2009)
Ke, Z Q, Logemann, Hartmut, Townley, S.
In this paper, adaptive discrete-time low-gain integral control strategies are presented for tracking constant reference signals for infinite-dimensional discrete-time power-stable linear systems....
Kohler, Rachel Elizabeth, Comerford, Iain, Townley, S., Haylock-Jacobs, S., Clark-Lewis, Ian, McColl, Shaun Re
The definitive version may be found at www.wiley.com
Kohler, Rachel Elizabeth, Comerford, Iain, Townley, S., Haylock-Jacobs, S., Clark-Lewis, Ian, McColl, Shaun Re
The definitive version may be found at www.wiley.com
Normal forms, bifurcations and limit dynamics in adaptive control systems (2003)
Lamooki, Reza Rokni, Townley, S, Osinga, HM
Later published under title "Bifurcations and limit dynamics in adaptive control systems" by World Scientific (2005), International Journal of Bifurcation and Chaos, 15(5), pp.1641-1664, ISSN...
Numerical approximations of strong (un)stable manifolds (2002)
Osinga, HM, Rokni, Reza, Townley, S
Preprint of a paper later published by Taylor and Francis (2004), Dynamical Systems, 19(3), pp.195-215, ISSN 1468-9367
H. Logemann, E. P. Ryan, S. Townley
: Closing the loop around an exponentially stable single-input single-output regular linear system, subject to a globally Lipschitz and non-decreasing actuator nonlinearity and compensated by an...
: In this note we consider the question of whether an adaptive controller can converge to a non-adaptive stabilizing controller. Specifically, we show for a class of back-stepping controllers with...
Existence and Learning of Oscillations in Recurrent Neural Networks (1999)
S. Townley, A. Ilchmann, M. G. Weiß, W. Mcclements, A. C. Ruiz, D. H. Owens, ...
In this paper we study a particular class of n-node recurrent neural networks (RNNs). In the 3-node case we use monotone dynamical systems theory to show, for a well-defined set of parameters, that,...
Integral Control of Infinite-Dimensional Linear Systems Subject to Input Saturation (1997)
H. Logemann, E. P. Ryan, S. Townley
: Closing the loop around an exponentially stable single-input single-output regular linear system, subject to a globally Lipschitz and non-decreasing actuator nonlinearity and compensated by an...
Qualitative dynamics, root-loci and asymptotic structure of universal adaptive stabilizers (1996)
TRIANTAFILLIDIS, S., LEACH, J. A., OWENS, D. H., TOWNLEY, S.
A problem of universal adaptive stabilization in Rn is approached in a qualitative manner to relate the form of the trajectories in the extended state space Rn+1 to the root locus of the...
Robustness Optimization for Uncertain Infinite-Dimensional Systems with Unbounded Inputs (1991)
In this paper, we consider the problem of robustness optimization for infinite-dimensional systems with respect to a class of bounded feedback-control laws. Both unbounded inputs and perturbations...
A Note on the Problem of Multivariable Adaptive Tracking (1991)
In this note we consider the problem of adaptive tracking for multivariable relative degree one, minimum phase systems. Our approach is in the spirit of Helmke et al. (1990) who considered adaptive...