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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.

A techno-economic assessment of implementing power-to-gas systems based on biomethanation in an operating waste water treatment plant (2020)
Journal Article
Michailos, S., Walker, M., Moody, A., Poggio, D., & Pourkashanian, M. (2021). A techno-economic assessment of implementing power-to-gas systems based on biomethanation in an operating waste water treatment plant. Journal of Environmental Chemical Engineering, 9(1), Article 104735. https://doi.org/10.1016/j.jece.2020.104735

The aim of the present study is to assess the techno-economic viability of integrating biomethanation into power to gas systems in a real waste water treatment plant (WWTP). The research is the first attempt to assess the viability of several scenari... Read More about A techno-economic assessment of implementing power-to-gas systems based on biomethanation in an operating waste water treatment plant.

Detection of nitrous oxide using infrared optical plasmonics coupled with carbon nanotubes (2020)
Journal Article
Allsop, T., Al Araimi, M., Neal, R., Wang, C., Culverhouse, P., Ania-Castañón, J. D., …Rozhin, A. (2020). Detection of nitrous oxide using infrared optical plasmonics coupled with carbon nanotubes. Nanoscale advances, 2(10), 4615-4626. https://doi.org/10.1039/d0na00525h

© The Royal Society of Chemistry 2020. Interest in gas sensing using functionalised carbon nanotubes is a major area of research that utilises changes in their electrical properties induced by the reaction with a specific gas. This paper describes sp... Read More about Detection of nitrous oxide using infrared optical plasmonics coupled with carbon nanotubes.

Wind turbine asymmetrical load reduction with pitch sensor fault compensation (2020)
Journal Article
Liu, Y., Patton, R. J., & Shi, S. (2020). Wind turbine asymmetrical load reduction with pitch sensor fault compensation. Wind energy, 23(7), 1523-1541. https://doi.org/10.1002/we.2496

Offshore wind turbines suffer from asymmetrical loading (blades, tower, etc), leading to enhanced structural fatigue. As well as asymmetrical loading different faults (pitch system faults etc.) can occur simultaneously, causing degradation of load mi... Read More about Wind turbine asymmetrical load reduction with pitch sensor fault compensation.

Biomethane production using an integrated anaerobic digestion, gasification and CO2 biomethanation process in a real waste water treatment plant: A techno-economic assessment (2020)
Journal Article
Michailos, S., Walker, M., Moody, A., Poggio, D., & Pourkashanian, M. (2020). Biomethane production using an integrated anaerobic digestion, gasification and CO2 biomethanation process in a real waste water treatment plant: A techno-economic assessment. Energy Conversion and Management, 209, Article 112663. https://doi.org/10.1016/j.enconman.2020.112663

The biomethanation of CO2 from anaerobic digestion within the power to gas concept has recently emerged as a promising technology to upgrade biogas, to decarbonise the domestic and industrial heat sector, provide long term energy storage and deliver... Read More about Biomethane production using an integrated anaerobic digestion, gasification and CO2 biomethanation process in a real waste water treatment plant: A techno-economic assessment.

Observer-Based Unknown Input Estimator of Wave Excitation Force for a Wave Energy Converter (2019)
Journal Article
Abdelrahman, M., & Patton, R. (2020). Observer-Based Unknown Input Estimator of Wave Excitation Force for a Wave Energy Converter. IEEE Transactions on Control Systems Technology, 28(6), 2665-2672. https://doi.org/10.1109/TCST.2019.2944329

Several energy maximization control approaches for point-absorber wave-energy converter (PAWEC) systems require knowledge of the wave excitation force (WEF) that is not measurable during the PAWEC operation. Many WEF estimators have been proposed bas... Read More about Observer-Based Unknown Input Estimator of Wave Excitation Force for a Wave Energy Converter.

Integrated Fault-Tolerant Control for Close Formation Flight (2019)
Journal Article
Liu, C., Jiang, B., Patton, R. J., & Zhang, K. (2020). Integrated Fault-Tolerant Control for Close Formation Flight. IEEE Transactions on Aerospace and Electronic Systems, 56(2), 839-852. https://doi.org/10.1109/TAES.2019.2920221

This paper investigates the position-tracking and attitude-tracking control problem of close formation flight with vortex effects under simultaneous actuator and sensor faults. On the basis of the estimated state and fault information from unknown in... Read More about Integrated Fault-Tolerant Control for Close Formation Flight.

Enhancement of wave energy absorption efficiency via geometry and power take-off damping tuning (2018)
Journal Article
Jin, S., Patton, R. J., & Guo, B. (2019). Enhancement of wave energy absorption efficiency via geometry and power take-off damping tuning. Energy, 169, 819-832. https://doi.org/10.1016/j.energy.2018.12.074

In this work a three dimensional computational fluid dynamic (CFD) model has been constructed based on a 1/50 scale heaving point absorber wave energy converter (PAWEC). The CFD model is validated first via wave tank tests and then is applied in this... Read More about Enhancement of wave energy absorption efficiency via geometry and power take-off damping tuning.

Towards “green” viscoelastically prestressed composites: Cellulose fibre reinforcement (2018)
Journal Article
Qin, Y., & Fancey, K. S. (2018). Towards “green” viscoelastically prestressed composites: Cellulose fibre reinforcement. Composites. Part B, Engineering, 154, 439-448. https://doi.org/10.1016/j.compositesb.2018.08.096

With growing concerns over environmental issues, fibre reinforced composites based on renewable, biodegradable low-cost cellulosic/cellulose fibres increasingly attract interest. This paper reports on the first study to produce viscoelastically prest... Read More about Towards “green” viscoelastically prestressed composites: Cellulose fibre reinforcement.

Hierarchical-Structure-Based Fault Estimation and Fault-Tolerant Control for Multiagent Systems (2018)
Journal Article
Liu, C., Jiang, B., Patton, R. J., & Zhang, K. (2019). Hierarchical-Structure-Based Fault Estimation and Fault-Tolerant Control for Multiagent Systems. IEEE Transactions on Control of Network Systems, 6(2), 586-597. https://doi.org/10.1109/TCNS.2018.2860460

This paper proposes a hierarchical-structure-based fault estimation and fault-tolerant control design with bidirectional interactions for nonlinear multiagent systems with actuator faults. The hierarchical structure consists of distributed multiagent... Read More about Hierarchical-Structure-Based Fault Estimation and Fault-Tolerant Control for Multiagent Systems.

Viscosity effect on a point absorber wave energy converter hydrodynamics validated by simulation and experiment (2018)
Journal Article
Siya, J., Patton, R. J., & Guo, B. (2018). Viscosity effect on a point absorber wave energy converter hydrodynamics validated by simulation and experiment. Renewable energy, 129(A), 500-512. https://doi.org/10.1016/j.renene.2018.06.006

To achieve optimal power in a wave energy conversion (WEC) system it is necessary to understand the device hydrodynamics. To maximize conversion efficiency the goal is to tune the WEC performance into resonance. The main challenge then to be overcome... Read More about Viscosity effect on a point absorber wave energy converter hydrodynamics validated by simulation and experiment.

Numerical and experimental studies of excitation force approximation for wave energy conversion (2018)
Journal Article
Guo, B., Patton, R. J., Jin, S., & Lan, J. (2018). Numerical and experimental studies of excitation force approximation for wave energy conversion. Renewable energy, 125, 877-889. https://doi.org/10.1016/j.renene.2018.03.007

Past or/and future information of the excitation force is useful for real-time power maximisation control of Wave Energy Converter (WEC) systems. Current WEC modelling approaches assume that the wave excitation force is accessible and known. However,... Read More about Numerical and experimental studies of excitation force approximation for wave energy conversion.

A decoupling approach to integrated fault-tolerant control for linear systems with unmatched non-differentiable faults (2017)
Journal Article
Lan, J., & Patton, R. J. (2018). A decoupling approach to integrated fault-tolerant control for linear systems with unmatched non-differentiable faults. Automatica : the journal of IFAC, the International Federation of Automatic Control, 89, 290-299. https://doi.org/10.1016/j.automatica.2017.12.011

This paper proposes a decoupling approach to the integrated design of fault estimation (FE) and fault-tolerant control (FTC) for linear systems in the presence of unknown bounded actuator faults and perturbations. An adaptive sliding mode augmented s... Read More about A decoupling approach to integrated fault-tolerant control for linear systems with unmatched non-differentiable faults.

Nonlinear Modeling and Verification of a Heaving Point Absorber for Wave Energy Conversion (2017)
Journal Article
Guo, B., Patton, R., Jin, S., Gilbert, J., & Parsons, D. (2017). Nonlinear Modeling and Verification of a Heaving Point Absorber for Wave Energy Conversion. IEEE Transactions on Sustainable Energy, 9(1), 453-461. https://doi.org/10.1109/tste.2017.2741341

Although the heaving Point Absorber (PA) concept is well known in wave energy conversion research, few studies focus on appropriate modelling of non-linear fluid viscous and mechanical friction dynamics. Even though these concepts are known to have n... Read More about Nonlinear Modeling and Verification of a Heaving Point Absorber for Wave Energy Conversion.

Experimental investigation of a super performance dew point air cooler (2017)
Journal Article
Xu, P., Ma, X., Zhao, X., & Fancey, K. (2017). Experimental investigation of a super performance dew point air cooler. Applied energy, 203, 761-777. https://doi.org/10.1016/j.apenergy.2017.06.095

This paper presents an experimental investigation of a super performance dew point air cooler which, by employing a super performance wet material layer, innovative heat and mass exchanger and intermittent water supply scheme, has achieved a signific... Read More about Experimental investigation of a super performance dew point air cooler.

Integrated fault-tolerant control for a 3-DOF helicopter with actuator faults and saturation (2017)
Journal Article
Lan, J., Patton, R. J., & Zhu, X. (2017). Integrated fault-tolerant control for a 3-DOF helicopter with actuator faults and saturation. IET Control Theory and Applications, 11(14), 2232-2241. https://doi.org/10.1049/iet-cta.2016.1602

© The Institution of Engineering and Technology 2017. This study proposes a fault estimation (FE)-based fault-tolerant control (FTC) strategy to maintain system reliability and achieve desirable control performance for a 3-DOF helicopter system with... Read More about Integrated fault-tolerant control for a 3-DOF helicopter with actuator faults and saturation.

Assessment of micro-scale anaerobic digestion for management of urban organic waste: A case study in London, UK (2017)
Journal Article
Walker, M., Theaker, H., Yaman, R., Poggio, D., Nimmo, W., Bywater, A., …Pourkashanian, M. (2017). Assessment of micro-scale anaerobic digestion for management of urban organic waste: A case study in London, UK. Waste Management, 61, 258-268. https://doi.org/10.1016/j.wasman.2017.01.036

This paper describes the analysis of an AD plant that is novel in that it is located in an urban environment, built on a micro-scale, fed on food and catering waste, and operates as a purposeful system. The plant was built in 2013 and continues to op... Read More about Assessment of micro-scale anaerobic digestion for management of urban organic waste: A case study in London, UK.

Fault-tolerant wind turbine pitch control using adaptive sliding mode estimation (2016)
Journal Article
Lan, J., Patton, R. J., & Zhu, X. (2018). Fault-tolerant wind turbine pitch control using adaptive sliding mode estimation. Renewable energy, 116, 219-231. https://doi.org/10.1016/j.renene.2016.12.005

Wind turbine pitch systems are essential for actuating desired blade angles and hence to keep the generator at rated speed in operation region 3. In the presence of parametric pitch actuator faults, pitch systems may have slow dynamics, affecting the... Read More about Fault-tolerant wind turbine pitch control using adaptive sliding mode estimation.

Experimental investigation on performance of fabrics for indirect evaporative cooling applications (2016)
Journal Article
Xu, P., Ma, X., Zhao, X., & Fancey, K. S. (2016). Experimental investigation on performance of fabrics for indirect evaporative cooling applications. Building and Environment, 110, 104-114. https://doi.org/10.1016/j.buildenv.2016.10.003

© 2016 Indirect evaporative cooling, by using water evaporation to absorb heat to lower the air temperature without adding moisture, is an extremely low energy and environmentally friendly cooling principle. The properties of the wet channel surface... Read More about Experimental investigation on performance of fabrics for indirect evaporative cooling applications.

Application of model-based LPV actuator fault estimation for an industrial benchmark (2016)
Journal Article
Chen, L., Patton, R., & Goupil, P. (2016). Application of model-based LPV actuator fault estimation for an industrial benchmark. Control engineering practice, 56, 60-74. https://doi.org/10.1016/j.conengprac.2016.08.003

To bridge the gap between model-based fault diagnosis theory and the industry practice, a linear parameter varying H_/H∞ fault estimation approach is applied to a high fidelity nonlinear aircraft benchmark, to deal with the various actuator fault det... Read More about Application of model-based LPV actuator fault estimation for an industrial benchmark.