Publications
2020
Cooperative control of heterogeneous connected vehicle platoons: An adaptive leader-following approach Journal Article
In: IEEE Robotics and Automation Letters, vol. 5, no. 2, pp. 977-984, 2020.
Iterative identification and control using non-normalized coprime factors with application in wafer stage motion control Journal Article
In: IEEE Transactions on Control Systems Technology, vol. 28, no. 2, pp. 413-424, 2020.
Distributed adaptive time-varying group formation tracking for multi-agent systems with multiple leaders on directed graphs Journal Article
In: IEEE Transactions on Control of Network Systems, vol. 7, no. 1, pp. 140-150, 2020.
Robust output consensus of homogeneous multi-agent systems with negative imaginary dynamics Journal Article
In: Automatica, vol. 113, pp. 108799 (1-9), 2020.
A direct proof of the equivalence of side conditions for strictly positive real matrix transfer functions Journal Article
In: IEEE Transactions on Automatic Control, vol. 65, no. 1, pp. 450-452, 2020.
2019
Output strictly negative imaginary systems and its connections to dissipativity theory Proceedings Article
In: Proceedings of the 58th IEEE Conference on Decision and Control, pp. 6754-6759, Nice, France, 2019.
Distributed robust stabilization of networked multi-agent systems with strict negative imaginary uncertainties Journal Article
In: International Journal of Robust and Nonlinear Control, vol. 29, no. 14, pp. 4845-4858, 2019.
Distributed finite-time consensus control for heterogeneous battery energy storage systems in droop-controlled microgrids Journal Article
In: IEEE Transactions on Smart Grid, vol. 10, no. 5, pp. 4751-4761, 2019.
Dynamic output feedback controller synthesis using an LMI-based alpha-strictly negative imaginary framework Proceedings Article
In: Proceedings of the 27th Mediterranean Conference on Control and Automation, pp. 75-80, Akko, Israel, 2019.
Cooperative control of integrator negative imaginary systems with application to rendezvous multiple mobile robots Proceedings Article
In: Proceedings of the 12th International Workshop on Robot Motion and Control, pp. 15-20, Poznan, Poland, 2019.
Bicoprime factor robust control synthesis via reduced dimension algebraic Riccati equations Proceedings Article
In: Proceedings of the 2019 18th European Control Conference, pp. 453-458, Napoli, Italy, 2019.
Negative imaginary synthesis via dynamic output feedback and static state feedback: A Riccati approach Journal Article
In: Automatica, vol. 104, pp. 220-227, 2019.
2018
Cooperative adaptive time-varying formation tracking for multi-agent systems with LQR performance index and switching directed topologies Proceedings Article
In: Proceedings of the 57th IEEE Conference on Decision and Control, pp. 5102-5107, Miami, FL, USA, 2018.
Controller synthesis to render a closed loop transfer function strongly strictly negative imaginary Proceedings Article
In: Proceedings of the 57th IEEE Conference on Decision and Control, pp. 2988-2993, Miami, FL, USA, 2018.
Robust output consensus for networks of homogeneous negative imaginary systems Proceedings Article
In: Proceedings of the 57th IEEE Conference on Decision and Control, pp. 3836-3841, Miami, FL, USA, 2018.
Cooperative control of innovative tri-rotor drones using robust feedback linearization Proceedings Article
In: Proceedings of the 12th UKACC International Conference on Control, pp. 347-352, Sheffield, UK, 2018.
On negative imaginary synthesis via solutions to Riccati equations Proceedings Article
In: Proceedings of the 17th European Control Conference, pp. 870-875, Limassol, Cyprus, 2018.
Robust stabilization of networked multi-agent systems with strict negative imaginary uncertainties: An LMI approach Proceedings Article
In: Proceedings of the 17th European Control Conference, pp. 167-171, Limassol, Cyprus, 2018.
Normalized bicoprime factorizations Proceedings Article
In: Proceedings of the 17th European Control Conference, pp. 149-154, Limassol, Cyprus, 2018.
An innovative tri-rotor drone and associated distributed aerial drone swarm control Journal Article
In: Robotics and Autonomous Systems, vol. 103, pp. 162-174, 2018.
Closed-loop stability analysis of discrete-time negative imaginary systems Journal Article
In: Systems and Control Letters, vol. 114, pp. 52-58, 2018.
2017
H-infinity-PID controller for an open-loop unstable system Proceedings Article
In: Proceedings of the 2017 IEEE 3rd International Conference on Electro-Technology for National Development (IEEE NIGERCON), pp. 134-138, Owerri, Nigeria, 2017.
Feedback stability of negative imaginary systems Journal Article
In: IEEE Transactions on Automatic Control, vol. 62, no. 11, pp. 5620-5633, 2017.
Foundations of a bicoprime factorization theory Journal Article
In: IEEE Transactions on Automatic Control, vol. 62, no. 9, pp. 4598-4603, 2017.
Conditions for preserving negative imaginary properties in feedback interconnections and an application to multi-agent systems Proceedings Article
In: Proceedings of the 25th Mediterranean Conference on Control and Automation, pp. 1143-1147, Valletta, Malta, 2017.
Discrete-time negative imaginary systems Journal Article
In: Automatica, vol. 79, pp. 1-10, 2017.
2016
Foundations of not necessarily rational negative imaginary systems theory: Relations between classes of negative imaginary and positive real systems Journal Article
In: IEEE Transactions on Automatic Control, vol. 61, no. 10, pp. 3052-3057, 2016.
Negative imaginary lemmas for descriptor systems Journal Article
In: IEEE Transactions on Automatic Control, vol. 61, no. 2, pp. 491-496, 2016.
2015
Robust output feedback consensus for multiple heterogeneous negative-imaginary systems Proceedings Article
In: Proceedings of the 54th IEEE Conference on Decision and Control, pp. 2371-2376, Osaka, Japan, 2015.
Descriptor systems state-space conditions to guarantee negative imaginary properties without minimality restrictions Proceedings Article
In: Proceedings of the 54th IEEE Conference on Decision and Control, pp. 2707-2712, Osaka, Japan, 2015.
Robust cooperative control of multiple heterogeneous negative-imaginary systems Journal Article
In: Automatica, vol. 61, pp. 64-72, 2015.
Robust output feedback consensus for networked negative-imaginary systems Journal Article
In: IEEE Transactions on Automatic Control, vol. 60, no. 9, pp. 2547-2552, 2015.
Bicoprime factor stability criteria and uncertainty characterisation Proceedings Article
In: Proceedings of the 8th IFAC Symposium on Robust Control Design, pp. 228-233, Bratislava, Slovakia, 2015.
Enhanced tracking for nanopositioning systems using feedforward/feedback multivariable control design Journal Article
In: IEEE Transactions on Control Systems Technology, vol. 23, no. 3, pp. 1003-1013, 2015.
A generalized negative imaginary lemma and Riccati-based static state-feedback negative imaginary synthesis Journal Article
In: Systems and Control Letters, vol. 77, pp. 63-68, 2015.
2014
A subspace system identification algorithm guaranteeing the negative imaginary property Proceedings Article
In: Proceedings of the 53rd IEEE Conference on Decision and Control, pp. 3180-3185, Los Angeles, CA, USA, 2014.
Generalizing negative imaginary systems theory to include free body dynamics: Control of highly resonant structures with free body motion Journal Article
In: IEEE Transactions on Automatic Control, vol. 59, no. 10, pp. 2692-2707, 2014, (Download also a more detailed technical report at arXiv: 1305.1079v2).
A robust output feedback consensus protocol for networked negative-imaginary systems Proceedings Article
In: Proceedings of the 19th IFAC World Congress, pp. 2878-2883, Cape Town, South Africa, 2014.
LMI searches for anticausal and noncausal rational Zames-Falb multipliers Journal Article
In: Systems and Control Letters, vol. 70, pp. 17-22, 2014.
Feedforward/feedback multivariable control design for high speed nanopositioning Proceedings Article
In: Proceedings of the 13th European Control Conference, pp. 1939-1944, Strasbourg, France, 2014.
Spectral conditions for negative imaginary systems with applications to nano-positioning Journal Article
In: IEEE/ASME Transactions on Mechatronics, vol. 19, no. 3, pp. 895-903, 2014.
On multipliers for bounded and monotone nonlinearities Journal Article
In: Systems and Control Letters, vol. 66, pp. 65-71, 2014.
Flight control of a quadrotor vehicle subsequent to a rotor failure Journal Article
In: AIAA Journal of Guidance, Control and Dynamics, vol. 37, no. 2, pp. 580-591, 2014.
Locking a three-mirror optical cavity using negative imaginary systems approach Journal Article
In: Quantum Information Review, vol. 2, no. 1, pp. 1-8, 2014.
Design, control, and performance of the weed 6 wheel robot in the UK MoD grand challenge Journal Article
In: Advanced Robotics, vol. 28, no. 4, pp. 203-218, 2014.
2013
Effect of unmodelled actuator dynamics on feedback linearised systems and a two stage feedback linearisation method Proceedings Article
In: Proceedings of the 52nd IEEE Conference on Decision and Control, pp. 841-846, Florence, Italy, 2013.
On multipliers for bounded and monotone nonlinearities Proceedings Article
In: Proceedings of the 12th European Control Conference, pp. 1711-1716, Zurich, Switzerland, 2013.
Characterisations of the 'mixed' small gain and passivity property for linear systems in discrete time Proceedings Article
In: Proceedings of the 12th European Control Conference, pp. 2597-2602, Zurich, Switzerland, 2013.
Enforcing negative imaginary dynamics on mathematical system models Journal Article
In: International Journal of Control, vol. 86, no. 7, pp. 1292-1303, 2013.
Equivalence between classes of multipliers for slope-restricted nonlinearities Journal Article
In: Automatica, vol. 49, no. 6, pp. 1732-1740, 2013.