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Dr Tim Hughes

Publications

_{Copyright Notice: Any articles made available for download are for personal use only. Any other use requires prior permission of the author and the copyright holder.}

| 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2014 | 2013 |

2022

• Alharthi M, Hughes T, Mueller M. (2022) Optimal Control of Volterra Difference Equations of the First Kind, 2022 13th UKACC International Conference on Control, CONTROL 2022, pages 171-176, DOI:10.1109/Control55989.2022.9781441.
• Hughes TH, Branford EH. (2022) Dissipativity, Reciprocity, and Passive Network Synthesis: From the Seminal Dissipative Dynamical Systems Articles of Jan Willems to The Present Day, IEEE Control Systems, volume 42, no. 3, pages 36-57, DOI:10.1109/mcs.2022.3157135. [PDF]

2021

• Hughes T. (2021) On computing the H2 norm using the polynomial Diophantine equation, 24th International Symposium on Mathematical Theory of Networks and Systems, Cambridge, Uk, 23rd - 27th Aug 2021.

2020

• Hughes T, Willetts G, Kryczka J. (2020) LQG controller for the LEGO MINDSTORMS EV3 Gyroboy Segway robot, 20th IFAC World Congress, Berlin, 13th - 17th Jul 2020, Proceeding of the 20th IFAC World Congress, DOI:10.1016/j.ifacol.2020.12.1811.
• Branford E, Hughes T. (2020) An assumption-free theorem on discrete-time positive real systems, IFAC-PapersOnLine, volume 53, no. 2, pages 4474-4480, DOI:10.1016/j.ifacol.2020.12.450. [PDF]
• Hughes TH. (2020) Minimal Series–Parallel Network Realizations of Bicubic Impedances, IEEE Transactions on Automatic Control, volume 65, no. 12, pages 4997-5011, DOI:10.1109/tac.2020.2968859. [PDF]

2019

• Hughes TH, Morelli A, Smith MC. (2019) On a concept of genericity for RLC networks, Systems and Control Letters, volume 134, DOI:10.1016/j.sysconle.2019.104562.
• Hughes TH. (2019) On reciprocal systems and controllability, Automatica, volume 101, pages 396-408, DOI:10.1016/j.automatica.2018.12.021.

2018

• Hughes TH. (2018) On the internal signature and minimal electric network realizations of reciprocal behaviors, Systems and Control Letters, volume 119, pages 16-22, DOI:10.1016/j.sysconle.2018.06.007.
• Hughes TH. (2018) On the Optimal Control of Passive or Nonexpansive Systems, IEEE Transactions on Automatic Control, volume 63, no. 12, pages 4079-4093, DOI:10.1109/TAC.2018.2819656.

2017

• Hughes TH. (2017) Passivity and electric circuits: a behavioral approach, DOI:10.1016/j.ifacol.2017.08.2117.
• Hughes TH, Smith MC. (2017) Controllability of linear passive network behaviors, Systems and Control Letters, volume 101, pages 58-66, DOI:10.1016/j.sysconle.2015.09.011.
• Hughes TH. (2017) Why RLC Realizations of Certain Impedances Need Many More Energy Storage Elements Than Expected, IEEE Transactions on Automatic Control, volume 62, no. 9, pages 4333-4346, DOI:10.1109/TAC.2017.2667585.
• Hughes TH. (2017) A theory of passive linear systems with no assumptions, Automatica, volume 86, pages 87-97, DOI:10.1016/j.automatica.2017.08.017.

2016

• Hughes TH. (2016) Behavioral realizations using companion matrices and the smith form, SIAM Journal on Control and Optimization, volume 54, no. 2, pages 845-865, DOI:10.1137/140991911.
• Hughes TH. (2016) Controllability of passive single-input single-output systems, 2016 European Control Conference, ECC 2016, pages 1087-1092, DOI:10.1109/ECC.2016.7810434.

2014

• Hughes TH. (2014) On the Synthesis of Passive Networks without Transformers. [PDF]
• Smith MC, Hughes TH, Jiang JZ. (2014) A Survey of Classical and Recent Results in RLC Circuit Synthesis, 21st International Symposium on Mathematical Theory of Networks and Systems, Groningen, The Netherlands, 7th - 11th Jul 2014, http://fwn06.housing.rug.nl/mtns2014-papers/extendedAbstracts/0127.pdf, pages 1119-1120.
• Hughes TH, Smith MC. (2014) Questions of minimality in RLC circuit synthesis, 21st International Symposium on Mathematical Theory of Networks and Systems, Groningen, The Netherlands, 7th - 11th Jul 2014, http://fwn06.housing.rug.nl/mtns2014-papers/extendedAbstracts/0121.pdf, pages 1558-1561.
• Hughes TH. (2014) On Connections between the Cauchy Index, the Sylvester Matrix, Continued Fraction Expansions, and Circuit Synthesis, 21st International Symposium on Mathematical Theory of Networks and Systems, Groningen, The Netherlands, 7th - 11th Jul 2014, http://fwn06.housing.rug.nl/mtns2014-papers/fullPapers/0060.pdf, pages 1121-1128.
• Hughes TH, Smith MC. (2014) On the minimality and uniqueness of the bott-duffin realization procedure, IEEE Transactions on Automatic Control, volume 59, no. 7, pages 1858-1873, DOI:10.1109/TAC.2014.2312471.

2013

• Hughes TH, Smith MC. (2013) Algebraic criteria for circuit realisations, Mathematical System Theory - Festschrift in Honor of Uwe Helmke on the Occasion of his Sixtieth Birthday, CreateSpace, 211-228.

Showing 22 publications from Symplectic.