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Defense and Tolerance Technique Against Attacks and Faults on Leader-Following Multi-USVs (2023)
Journal Article
Liu, C., Xia, Z., Tian, Y., & Patton, R. J. (in press). Defense and Tolerance Technique Against Attacks and Faults on Leader-Following Multi-USVs. IEEE Transactions on Intelligent Transportation Systems, https://doi.org/10.1109/TITS.2023.3330570

This study explores the leader-following consensus tracking control issue of multiple unmanned surface vehicles (multi-USVs) in the presence of malicious connectivity-mixed attacks in the cyber layer, and concurrent output channel noises, sensor/actu... Read More about Defense and Tolerance Technique Against Attacks and Faults on Leader-Following Multi-USVs.

Sensor Fault Tolerant Control for a 3-DOF Helicopter Considering Detectability Loss (2023)
Journal Article
Wang, X., Wang, Y., Zhang, Z., Wang, X., & Patton, R. (2023). Sensor Fault Tolerant Control for a 3-DOF Helicopter Considering Detectability Loss. IEEE Transactions on Circuits and Systems I: Regular Papers, https://doi.org/10.1109/TCSI.2023.3303153

This paper proposes a novel active fault tolerant control (FTC) scheme for a 3-degree-of-freedom (3-DOF) helicopter with sensor faults. As a challenge, only attitude angles are considered available, so that when the sensors measuring the elevation/tr... Read More about Sensor Fault Tolerant Control for a 3-DOF Helicopter Considering Detectability Loss.

The wave energy converter control competition (WECCCOMP): Wave energy control algorithms compared in both simulation and tank testing (2023)
Journal Article
Ringwood, J. V., Tom, N., Ferri, F., Yu, Y. H., Coe, R. G., Ruehl, K., …Faedo, N. (2023). The wave energy converter control competition (WECCCOMP): Wave energy control algorithms compared in both simulation and tank testing. Applied Ocean Research, 138, Article 103653. https://doi.org/10.1016/j.apor.2023.103653

The wave energy control competition established a benchmark problem which was offered as an open challenge to the wave energy system control community. The competition had two stages: In the first stage, competitors used a standard wave energy simula... Read More about The wave energy converter control competition (WECCCOMP): Wave energy control algorithms compared in both simulation and tank testing.

Model Predictive Energy-Maximising Tracking Control for a Wavestar-Prototype Wave Energy Converter (2023)
Journal Article
Li, D., & Patton, R. (2023). Model Predictive Energy-Maximising Tracking Control for a Wavestar-Prototype Wave Energy Converter. Journal of Marine Science and Engineering, 11(7), Article 1289. https://doi.org/10.3390/jmse11071289

To date, one of the main challenges in the wave energy field is to achieve energy-maximizing control in order to reduce the levelized cost of energy (LCOE). This paper presents a model predictive velocity tracking control method based on a hierarchic... Read More about Model Predictive Energy-Maximising Tracking Control for a Wavestar-Prototype Wave Energy Converter.

Improved control strategies for the environment within cell culture bioreactors (2023)
Journal Article
Jones, J., Kindembe, D., Branton, H., Lawal, N., Montero, E. L., Mack, J., …Montague, G. (2023). Improved control strategies for the environment within cell culture bioreactors. Food and Bioproducts Processing, 138, 209-220. https://doi.org/10.1016/j.fbp.2023.02.004

This paper describes the development of improved control strategies for the standard environmental conditions in a fed-batch bioreactor used for monoclonal antibody cell culture. The consequences of relying on fixed parameter PID based controllers ar... Read More about Improved control strategies for the environment within cell culture bioreactors.

Decentralized Fault Estimation and Distributed Fault-tolerant Tracking Control Co-design for Sensor Faulty Multi-agent Systems with Bidirectional Couplings (2023)
Journal Article
Liu, C., Yu, Z., & Patton, R. J. (2023). Decentralized Fault Estimation and Distributed Fault-tolerant Tracking Control Co-design for Sensor Faulty Multi-agent Systems with Bidirectional Couplings. International journal of control, automation, and systems, 21, 810-819. https://doi.org/10.1007/s12555-021-1038-4

This study proposes a co-design framework of decentralized fault estimation and distributed fault-tolerant tracking control schemes of Lipschitz nonlinear multi-agent systems with external disturbances and unpredicted sensor faults. To begin with, th... Read More about Decentralized Fault Estimation and Distributed Fault-tolerant Tracking Control Co-design for Sensor Faulty Multi-agent Systems with Bidirectional Couplings.

Actuator fault tolerant offshore wind turbine load mitigation control (2023)
Journal Article
Liu, Y., Patton, R. J., & Shi, S. (2023). Actuator fault tolerant offshore wind turbine load mitigation control. Renewable energy, 205, 432-446. https://doi.org/10.1016/j.renene.2023.01.092

Offshore wind turbine (OWT) rotors have large diameters with flexible blade structures which are subject to asymmetrical loads caused by blade flapping and turbulent or unsteady wind flow. Rotor imbalance inevitably leads to enhanced fatigue of blade... Read More about Actuator fault tolerant offshore wind turbine load mitigation control.

Actuator fault tolerant offshore wind turbine load mitigation control (2023)
Journal Article
Liu, Y., Patton, R. J., & Shi, S. (2023). Actuator fault tolerant offshore wind turbine load mitigation control. Renewable energy, 205, 432-446. https://doi.org/10.1016/j.renene.2023.01.092

Offshore wind turbine (OWT) rotors have large diameters with flexible blade structures which are subject to asymmetrical loads caused by blade flapping and turbulent or unsteady wind flow. Rotor imbalance inevitably leads to enhanced fatigue of blade... Read More about Actuator fault tolerant offshore wind turbine load mitigation control.