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Professor Stuart Townley

Professor Stuart Townley

Professor in Applied Mathematics

 S.B.Townley@exeter.ac.uk

 01326 255743

 Environment and Sustainability Institute 1.39

 

Environment and Sustainability Institute, University of Exeter, Penryn Campus, Penryn, Cornwall, TR10 9FE, UK


Overview

I am particularly interested in dynamical systems and control: the study of things (mechanical, biological, electrical, etc.) which interact and evolve in time and can be predicted, managed and optimised. I've been the Chair in Applied Mathematics at the ESI since June 2011. I work closely with colleagues in the College of Engineering, Mathematics and Physical Sciences, as well as in the College of Life and Environmental Sciences, to understand natural and man-made systems.

I am also a member of the Mathematics department in the College of Engineering, Mathematics and Physical Sciences.

Qualifications

1987 PhD Engineering (University of Warwick)
1983 BSc Mathematics (University of Warwick)

Career

2011 Chair in Applied Mathematics, University of Exeter
2003-2005 Head of Department in the School of Mathematics, University of Exeter
2003-2005 Associate Dean in the Postgraduate Faculty, University of Exeter
1999 Personal Chair, University of Exeter
1996 Reader, University of Exeter
1990 Lecturer, University of Exeter
1988-1990 Postdoctoral Researcher, University of Bath 
1986-1988 Postdoctoral Researcher, University of Warwick

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Research

Research interests

  • Matrix algebra
  • Signal processing
  • Mathematical ecology and biology
  • Inter-disciplinary mathematics
  • Dynamical systems
  • Population ecology
  • Evolutionary biology
  • Systems biology
  • Energy systems and control

Research projects

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Publications

Journal articles

Hodgson D, Jelbert K, Buss D, McDonald J, Townley S, Franco M, Stott I, Jones O, Salguero Gomez R, Buckley Y, et al (In Press). Demographic amplification is a predictor of invasiveness among plants. Nature Communications
Menneer T, Mueller M, Townley S (2023). A cluster analysis approach to sampling domestic properties for sensor deployment. Building and Environment, 231, 110032-110032
Kumar Panda D, Das S, Townley S (2023). Hyperparameter optimized classification pipeline for handling unbalanced urban and rural energy consumption patterns. Expert Systems with Applications, 214, 119127-119127
Guiver C, Rebarber R, Townley S (2023). Low-gain integral control for a class of discrete-time Lur'e systems with applications to sampled-data control. INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL, 33(3), 1410-1437 Author URL.
Joshi H, Yavuz M, Townley S, Jha BK (2023). Stability analysis of a non-singular fractional-order covid-19 model with nonlinear incidence and treatment rate. Physica Scripta, 98(4), 045216-045216
Franco D, Guiver C, Smith P, Townley S (2022). A switching feedback control approach for persistence of managed resources. Discrete and Continuous Dynamical Systems - B, 27(3)
Edholm CJ, Guiver C, Rebarber R, Tenhumberg B, Townley S (2022). Stabilization by Adaptive Feedback Control for Positive Difference Equations with Applications in Pest Management. SIAM Journal on Control and Optimization, 60(4), 2214-2245
Panda DK, Das S, Townley S (2022). Toward a More Renewable Energy-Based LFC Under Random Packet Transmissions and Delays with Stochastic Generation and Demand. IEEE Transactions on Automation Science and Engineering, 19(2), 1217-1232
Parfett A, Townley S, Allerfeldt K (2021). AI-based healthcare: a new dawn or apartheid revisited?. AI and Society, 36(3), 983-999
Guiver C, Poppelreiter N, Rebarber R, Tenhumberg B, Townley S (2021). DYNAMIC OBSERVERS FOR UNKNOWN POPULATIONS. DISCRETE AND CONTINUOUS DYNAMICAL SYSTEMS-SERIES B, 26(6), 3279-3302 Author URL.
Menneer T, Mueller M, Sharpe RA, Townley S (2021). Modelling mould growth in domestic environments using relative humidity and temperature. Building and Environment
Naik PA, Yavuz M, Qureshi S, Zu J, Townley S (2020). Modeling and analysis of COVID-19 epidemics with treatment in fractional derivatives using real data from Pakistan. The European Physical Journal Plus, 135(10)
Argyropoulos A, Townley S, Upton PM, Dickinson S, Pollard AS (2019). Identifying on admission patients likely to develop acute kidney injury in hospital. BMC Nephrol, 20(1) Author URL.
Gianuca D, Votier SC, Pardo D, Wood AG, Sherley RB, Ireland L, Choquet R, Pradel R, Townley S, Forcada J, et al (2019). Sex-specific effects of fisheries and climate on the demography of sexually dimorphic seabirds. J Anim Ecol, 88(9), 1366-1378 Author URL.
Nicol‑Harper A, Dooley C, Packman D, Mueller M, Bijak J, Hodgson D, Townley S, Ezard T (2018). Inferring transient dynamics of human populations from matrix non-normality. Population Ecology
Edholm CJ, Tenhumberg B, Guiver C, Jin Y, Townley S, Rebarber R (2018). Management of invasive insect species using optimal control theory. Ecological Modelling, 381, 36-45
Guiver C, Packman D, Townley S (2017). A necessary condition for dispersal driven growth of populations with discrete patch dynamics. J Theor Biol, 424, 11-25 Author URL.
McDonald JL, Franco M, Townley S, Ezard THG, Jelbert K, Hodgson DJ (2017). Divergent demographic strategies of plants in variable environments. Nature Ecology & Evolution, 1(2)
Gianuca D, Phillips RA, Townley S, Votier SC (2017). Global patterns of sex- and age-specific variation in seabird bycatch. Biological Conservation, 205, 60-76
Guiver C, Logemann H, Townley S (2017). Low-gain integral control for multi-input multioutput linear systems with input nonlinearities. IEEE Transactions on Automatic Control, 62(9), 4776-4783
Bill A, Guiver C, Logemann H, Townley S (2017). The converging-input converging-state property for Lur’e systems. Mathematics of Control, Signals, and Systems, 29(1)
Guiver C, Hodgson D, Townley S (2016). A note on the eigenvectors of perturbed matrices with applications to linear positive systems. Linear Algebra and its Applications, 509, 143-167
Guiver C, Mueller M, Hodgson D, Townley S (2016). Robust set-point regulation for ecological models with multiple management goals. J Math Biol, 72(6), 1467-1529 Author URL.
Guiver C, Edholm C, Jin Y, Mueller M, Powell J, Rebarber R, Tenhumberg B, Townley S (2016). Simple Adaptive Control for Positive Linear Systems with Applications to Pest Management. SIAM Journal on Applied Mathematics, 76(1), 238-275
Bill A, Guiver C, Logemann H, Townley S (2016). Stability of nonnegative Lur'e systems. SIAM Journal on Control and Optimization, 54(3), 1176-1211
Mcdonald JL, Stott I, Townley S, Hodgson DJ (2016). Transients drive the demographic dynamics of plant populations in variable environments. Journal of Ecology, 104(2), 306-314
Guiver C, Logemann H, Rebarber R, Bill A, Tenhumberg B, Hodgson D, Townley S (2015). Integral control for population management. J Math Biol, 70(5), 1015-1063 Author URL.
Guiver C, Dreiwi H, Filannino D-M, Hodgson D, Lloyd S, Townley S (2015). The role of population inertia in predicting the outcome of stage-structured biological invasions. Math Biosci, 265, 1-11 Author URL.
Eager EA, Guiver C, Hodgson D, Rebarber R, Stott I, Townley S (2014). Bounds on the dynamics of sink populations with noisy immigration. Theor Popul Biol, 92, 88-96 Author URL.
Guiver C, Hodgson D, Townley S (2014). Positive state controllability of positive linear systems. Systems and Control Letters, 65(1), 23-29
Kuijper B, Johnstone RA, Townley S (2014). The evolution of multivariate maternal effects. PLoS Comput Biol, 10(4) Author URL.
Townley S, Ezard THG (2013). A G matrix analogue to capture the cumulative effects of nongenetic inheritance. J Evol Biol, 26(6), 1234-1243 Author URL.
Elragig A, Townley S (2012). A new necessary condition for Turing instabilities. Mathematical Biosciences, 239(1), 131-138
Stott I, Hodgson DJ, Townley S (2012). Beyond sensitivity: nonlinear perturbation analysis of transient dynamics. METHODS IN ECOLOGY AND EVOLUTION, 3(4), 673-684 Author URL.
Townley S, Rebarber R, Tenhumberg B (2012). Feedback control systems analysis of density dependent population dynamics. Systems and Control Letters, 61(2), 309-315
Rebarber R, Tenhumberg B, Townley S (2012). Global asymptotic stability of density dependent integral population projection models. Theor Popul Biol, 81(1), 81-87 Author URL.
Li G, Weiss G, Mueller M, Townley S, Belmont MR (2012). Wave energy converter control by wave prediction and dynamic programming. Renewable Energy, 48, 392-403
Stott I, Hodgson DJ, Townley S (2012). popdemo: an R package for population demography using projection matrix analysis. METHODS IN ECOLOGY AND EVOLUTION, 3(5), 797-802 Author URL.
Stott I, Townley S, Hodgson DJ (2011). A framework for studying transient dynamics of population projection matrix models. Ecol Lett, 14(9), 959-970 Author URL.
Stott I, Franco M, Carslake D, Townley S, Hodgson D (2010). Boom or bust? a comparative analysis of transient population dynamics in plants. Journal of Ecology, 98(2), 302-311
Stott I, Townley S, Carslake D, Hodgson DJ (2010). On reducibility and ergodicity of population projection matrix models. Methods in Ecology and Evolution, 1, 242-252
Ke Z, Logemann H, Townley S (2009). Adaptive sampled-data integral control of stable infinite-dimensional linear systems. Systems and Control Letters
Orosz G, Ashwin P, Townley S (2009). Learning of spatiotemporal codes in a coupled oscillator system. IEEE Transactions on Neural Networks
Carslake D, Townley S, Hodgson DJ (2009). Patterns and rules for sensitivity and elasticity in population projection matrices. Ecology, 90(11), 3258-3267 Author URL.
Carslake D, Townley S, Hodgson DJ (2009). Predicting the impact of stage-specific harvesting on population dynamics. J Anim Ecol, 78(5), 1076-1085 Author URL.
Townley S, Hodgson DJ (2008). Erratum et addendum: Transient amplification and attenuation in stage-structured population dynamics. Journal of Applied Ecology, 45(6), 1836-1839
Carslake D, Townley S, Hodgson DJ (2008). Nonlinearity in eigenvalue-perturbation curves of simulated population projection matrices. Theor Popul Biol, 73(4), 498-505 Author URL.
McCarthy D, Townley S, Hodgson D (2008). On second order sensitivity for stage-based population projection matrix models. Theor Popul Biol, 74(1), 68-73 Author URL.
Townley S, Hodgson DJ (2008). Predicting transient amplification in perturbed ecological systems (vol 44, pg 1243, 2007). JOURNAL OF APPLIED ECOLOGY, 45(6), 1836-1839 Author URL.
Macclean,M.M,Carslake,D.J. Evans MR, Townley S, Hodgson DJ (2008). The usefulness of sensitivity analysis for predicting the effects of cat predation on the population dynamics of their avian prey. IBIS, 150, 100-113
Ashwin P, Orosz G, Wordsworth J, Townley S (2007). Dynamics on networks of cluster states for globally coupled phase oscillators. SIAM Journal on Applied Dynamical Systems, 6, 728-758 Author URL.
Hodgson DJ, Carslake DJ, Kellie-Smith O, Townley S (2007). Predicting transient amplification in disturbed natural systems. Journal of Applied Ecology, 44(6), 1243-1251
Deines A, Peterson E, Boeckner D, Boyle J, Keighley A, Kogut J, Lubben J, Rebarber R, Ryan R, Tenhumberg B, et al (2007). Robust population management under uncertainty for structured population models. Ecol Appl, 17(8), 2175-2183 Author URL.
Rebarber R, Townley S (2006). Robustness with respect to sampling for stabilization of Riesz spectral systems. IEEE Transactions on Automatic Control, 51, 1519-1522
Hodgson D, Townley S, McCarthy D (2006). Robustness: predicting the effects of life history perturbations on stage-structured population dynamics. Theor Popul Biol, 70(2), 214-224 Author URL.
Ilchmann A, Townley S, Thuto M (2005). Adaptive sampled-data tracking for input-constrained exothermic chemical reaction models. Systems and Control Letters, 54(12), 1149-1161
Townley SB, Lamooki JRR, Osinga HM (2005). Bifurcations and limit dynamics in adaptive control systems. International Journal of Bifurcation and Chaos, 15(5), 1641-1664
Townley SB, Rebarber R, Logemann H (2005). Generalized sampled-data stabilization of well-posed linear infinite-dimensional systems. SIAM Journal on Control and Optimization, 44(4), 1345-1369
Emirsajlow Z, Townley S (2005). On application of the implemented semigroup to a problem arising in optimal control. International Journal of Control, 78(4), 298-310
Thuto, M.V. Ilchmann, A. (2004). Input constrained adaptive l-tracking with applications to exothermic chemical reactor models. SIAM Journal on Control and Optimization, 43(1), 154-173
Hodgson DJ, Townley S (2004). Linking management changes to population dynamic responses: the transfer function of a projection matrix perturbation. Journal of Applied Ecology, 41(6), 1155-1161
Osinga HM, Lamooki GRR, Townley S (2004). Numerical approximations of strong (un)stable manifolds. Dynamical Systems, 19, 195-215
Logemann, H. (2003). Adaptive low-gain integral control of multivariable well-posed linear systems. SIAM Journal on Control and Optimization, 41(6), 1722-1732
Ozdemir N, Townley S (2003). Integral-control by variable sampling based on steady state data. Automatica, 39, 135-140
Townley SB, Crauel H, Matsikis I (2003). Noise assisted high gain stabilization: Almost surely or in second mean. SIAM Journal on Control and Optimization, 42(5), 1834-1853
Townley TY, Townley S, Owens DH, Yu H (2003). Norm optimal iterative learning plus prediction control. "Proceedings of the 9th IEEE International Conference on Methods and Models in Automation and Robotics, August 2003", 1, 539-544
Lamooki GRR, Townley S (2003). Partial stability in back-stepping and adaptive control. "'Proceedings of the 9th IEEE International Conference on Methods and Models in Automation and Robotics, August 2003'", 1, 491-496
Townley SB, Logemann H, Rebarber R (2003). Stability of infinite-dimensional sampled-data systems. Transactions of the American Mathematical Society, 355(8), 3301-3328
Rebarber R, Townley S (2002). Nonrobustness of closed-loop stability for infinite-dimensional systems under sample and hold. IEEE Transactions on Automatic Control, 47(8), 1381-1385
Rebarber R, Townley S (2001). Robustness of closed-loop stability for infinite-dimensional systems under sample and hold - counterexamples. "Proc. Conference on Decision and Control, Sydney, December 2000", 3290-3295
Ozdemir N, Townley S (2001). Variable sampling integral control of infinite-dimensional systems. "'Proc. Conference on Decision and Control, Sydney, December 2000'", 3284-3289
Lefèvre L, Georges D, Emirsjlow Z, Townley S (2000). Discussion on:: 'From PDEs with boundary control to the abstract state equation with an unbounded input operator:: a tutorial' by Z.!Emirsjlow and S.!Townley. EUROPEAN JOURNAL OF CONTROL, 6(1), 50-53 Author URL.
Townley S, Ilchmann A, Weiss MG, McClements W, Ruiz AC, Owens DH, Pratzel-Wolters D (2000). Existence and learning of oscillations in recurrent neural networks. IEEE Trans Neural Netw, 11(1), 205-214 Author URL.
Emirsjlow Z, Townley S (2000). From PDEs with boundary control to the abstract state equation with an unbounded input operator: a tutorial. European Journal of Control, 6(1), 27-49
Ilchmann A, Townley S (1999). Adaptive high-gain λ-tracking with variable sampling rate. Systems and Control Letters, 36(4), 285-293
Ilchmann A, Townley S (1999). Adaptive sampling control of high-gain stabilizable systems. IEEE Transactions on Automatic Control, 44(10), 1961-1966
Townley S (1999). An example of a globally stabilizing adaptive controller with a generically destabilizing parameter estimate. IEEE Transactions on Automatic Control, 44(11), 2238-2241
Logemann H, Ryan EP, Townley S (1999). Integral control of linear systems with actuator nonlinearities: Lower bounds for the maximal regulating gain. IEEE Transactions on Automatic Control, 44(6), 1315-1319
Rebarber R, Townley S (1999). Robustness with respect to delays for exponential stability of distributed parameter systems. SIAM Journal on Control and Optimization, 37(1), 230-244
Ruiz A, Owens DH, Townley S (1998). Existence, learning, and replication of periodic motions in recurrent neural networks. IEEE Trans Neural Netw, 9(4), 651-661 Author URL.
Rebarber R, Townley S (1998). Generalized sampled data feedback control of distributed parameter systems. Systems and Control Letters, 34(5), 229-240
Logemann H, Ryan EP, Townley S (1998). Integral control of infinite-dimensional linear systems subject to input saturation. SIAM Journal on Control and Optimization, 36(6), 1940-1961
Logemann H, Townley S (1997). Adaptive control of infinite-dimensional systems without parameter estimation: an overview. IMA Journal of Mathematical Control and Information, 14(2), 175-206
Logemann H, Townley S (1997). Adaptive integral control of time-delay systems. IEE Proceedings: Control Theory and Applications, 144(6), 531-536
Logemann H, Townley S (1997). Discrete-time low-gain control of uncertain infinite-dimensional systems. IEEE Transactions on Automatic Control, 42(1), 22-37
Townley S (1997). Guest editorial. IMA Journal of Mathematical Control and Information, 14(1), 1-2
Logemann H, Townley S (1997). Low-gain control of uncertain regular linear systems. SIAM Journal on Control and Optimization, 35(1), 78-116
Rebarber R, Townley S (1997). Stabilization of distributed parameter systems by piecewise polynomial control. IEEE Transactions on Automatic Control, 42(9), 1254-1257
Curtain RF, Townley S, Logemann H, Zwart H (1997). Well-posedness, stabilizability, and admissibility for Pritchard-Salamon systems. Journal of Mathematical Systems, Estimation, and Control, 7(4), 439-476
Townley S, Kamstra M (1996). Integral control with saturating input. IEE Conference Publication(427 /2), 805-808
Ruiz A, Owens DH, Townley S (1996). Learning periodic signals with recurrent neural. IEE Conference Publication(427 /2), 1131-1136
Logemann H, Townley S (1996). Low gain control of uncertain distributed parameter systems: Part 1 & Part 2. IEE Colloquium (Digest)(139)
Emirsajlow Z, Pritchard AJ, Townley S (1996). On structured perturbations for two classes of linear infinite-dimensional systems. Dynamics and Control, 6(3), 227-261
Triantafillidis S, Leach JA, Owens DH, Townley S (1996). Qualitative dynamics, root-loci and asymptotic structure of universal adaptive stabilizers. IMA Journal of Mathematical Control and Information, 13(3), 251-278
Logemann H, Townley S (1996). The effect of small delays in the feedback loop on the stability of neutral systems. Systems and Control Letters, 27(5), 267-274
Townley S (1996). Topological aspects of universal adaptive stabilization. SIAM Journal on Control and Optimization, 34(3), 1044-1070
Leach JA, Triantafillidis S, Owens DH, Townley S (1995). Dynamics of universal adaptive stabilization: computational and analytical studies. Control, theory and advanced technology, 10(4 pt 4), 1689-1716
Triantafillidis S, Leach JA, Owens DH, Townley S (1995). Limit systems, limit gains and non-generic behaviours arising in adaptive stabilizing control. Dynamics and Stability of Systems, 10(3), 233-254
Rebarber R, Townley S (1995). Robustness and continuity of the spectrum for uncertain distributed parameter systems. Automatica, 31(11), 1533-1546
Townley S (1995). Simple adaptive stabilization of output feedback stabilizable distributed parameter systems. Dynamics and Control, 5(2), 107-123
Leach JA, Triantafillidis S, Owens DH, Townley S (1995). The dynamics of universal adaptive stabilization: Computational and analytical studies. CONTROL-THEORY AND ADVANCED TECHNOLOGY, 10(4), 1689-1716 Author URL.
RYAN EP, TOWNLEY S (1993). NONLINEAR UNCERTAIN SYSTEMS AND ROBUSTNESS OPTIMIZATION. INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL, 3(3), 241-260 Author URL.
Hicks AC, Townley S (1993). On exact solutions of differential equations arising in universal adaptive stabilization. Systems and Control Letters, 20(2), 117-129
Ilchmann A, Townley S (1993). Simple adaptive stabilization of high-gain stabilizable systems. Systems and Control Letters, 20(3), 189-198
Townley S, Owens DH (1991). A note on the problem of multivariable adaptive tracking. IMA Journal of Mathematical Control and Information, 8(4), 389-395
Townley S, Ryan EP (1991). On the supremally regulated complex stability radius as a real robustness measure. Systems and Control Letters, 16(4), 249-259
Pritchard AJ, Townley S (1991). Robustness optimization for uncertain infinite-dimensional systems with unbounded inputs. IMA Journal of Mathematical Control and Information, 8(2), 121-133
HINRICHSEN D, PRITCHARD AJ, TOWNLEY SB (1990). RICCATI EQUATION APPROACH TO MAXIMIZING THE COMPLEX STABILITY RADIUS BY STATE FEEDBACK. INTERNATIONAL JOURNAL OF CONTROL, 52(4), 769-794 Author URL.
Townley S (1990). Stability radius optimization: a geometric approach. Systems and Control Letters, 14(3), 199-207
Pritchard AJ, Townley S (1989). Robustness Optimization for Abstract, Uncertain Control Systems: Unbounded Inputs and Perturbations. IFAC-PapersOnLine, 22(4), 117-121
Pritchard AJ, Townley S (1989). Robustness of linear systems. Journal of Differential Equations, 77(2), 254-286
Pritchard AJ, Townley S (1988). Robust compensator design via structured stability radii. Systems and Control Letters, 11(1), 33-37
PRITCHARD AJ, TOWNLEY S (1987). A STABILITY RADIUS FOR INFINITE DIMENSIONAL SYSTEMS. LECTURE NOTES IN CONTROL AND INFORMATION SCIENCES, 102, 272-291 Author URL.
Chapman MJ, Pritchard AJ, Townley SB (1987). Modelling linear distributed parameter systems. Systems Science, 13(3-4), 37-50
Pritchard AJ, Townley S (1987). ROBUSTNESS OF INFINITE DIMENSIONAL SYSTEMS. IFAC Proceedings Series(3), 459-462

Chapters

Jones O, Ezard THG, Dooley C, Healy K, Hodgson D, Mueller M, Townley S, Salguero-Gómez R (2020). My family and other animals: Human demography under a comparative cross-species lens. In Burger O, Lee R, Sear R (Eds.) Human Evolutionary Demography, Open Science Framework
Pritchard AJ, Townley S (1990). ROBUSTNESS OPTIMIZATION FOR ABSTRACT, UNCERTAIN CONTROL SYSTEMS: UNBOUNDED INPUTS AND PERTURBATIONS. In  (Ed) Control of Distributed Parameter Systems 1989, Elsevier, 117-121.

Conferences

Dong S, Das S, Townley S, Thornton A (2023). Swarm Intelligence Based Drone Flocking Model. 2023 28th International Conference on Automation and Computing (ICAC). 30th Aug - 1st Sep 2023
Ilchmann A, Townley S (2015). Adaptive high-gain fast-sampling P-control.
Ruiz A, Owens DH, Townley S (2015). L<inf>2</inf> approximation properties of recurrent neural networks. 1997 European Control Conference (ECC).
Orosz G, Ashwin P, Wordsworth J, Townley S (2007). Cluster synchronization, switching and spatio-temporal coding in a phase oscillator network. Author URL.
Orosz G, Ashwin P, Wordsworth J, Townley S (2007). Cluster synchronization, switching and spatio-temporal coding in a phase oscillator network. Author URL.
Ilchmann A, Thuto MV, Townley S (2001). Lambda-tracking for exothermic chemical reactions with saturating inputs.
Ilchmann A, Thuto M, Townley S (2001). λ-Tracking for exothermic chemical reactions with saturating inputs.
Rebarber R, Townley S (2000). Robustness of closed-loop stability for infinite dimensional systems under sample and hold - Counterexamples.
Ozdemir N, Townley S (2000). Variable sampling integral control of infinite-dimensional systems. Proceedings of the 39th IEEE Conference on Decision and Control (Cat. No.00CH37187).
Logemann H, Ryan EP, Townley S (1998). Low-gain integral control of linear distributed parameter systems subject to input saturation.
Ilchmann A, Townley S (1997). Adaptive high-gain fast-sampling P-control.
Ruiz A, Owens DH, Townley S (1996). Existence of limit cycles in recurrent neural networks.
Logemann H, Townley S (1995). Adaptive low-gain sampled-data control of DPS. Author URL.
Townley S, Owens DH, Triantafillidis S, Leach JA (1995). Local and limiting analysis of stable universal adaptive dynamics.
Townley S (1995). Topological aspects of universal adaptive stabilization.
TOWNLEY S (1993). ROBUST STABILITY RADII FOR DISTRIBUTED-PARAMETER SYSTEMS - a SURVEY. Author URL.
TOWNLEY S (1992). GENERIC PROPERTIES OF UNIVERSAL ADAPTIVE STABILIZATION SCHEMES. Author URL.
Ryan EP, Townley S (1990). Non-linear systems: Robustness optimization and universal adaptive stabilization.
PRITCHARD AJ, TOWNLEY S (1990). REAL STABILITY RADII FOR INFINITE DIMENSIONAL SYSTEMS. Author URL.

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