All Outputs (163)

Learning a flexible neural energy function with a unique minimum for globally stable and accurate demonstration learning (2023)
Journal Article
Jin, Z., Si, W., Liu, A., Zhang, W. A., Yu, L., & Yang, C. (in press). Learning a flexible neural energy function with a unique minimum for globally stable and accurate demonstration learning. IEEE Transactions on Robotics, https://doi.org/10.1109/tro.2023.3303011

Learning a stable autonomous dynamic system (ADS) encoding human motion rules has been shown as an effective way for demonstration learning. However, the stability guarantee may sacrifice the demonstration learning accuracy. This article solves the i... Read More about Learning a flexible neural energy function with a unique minimum for globally stable and accurate demonstration learning.

Practical hardware for evolvable robots (2023)
Journal Article
Angus, M., Buchanan, E., Le Goff, L. K., Hart, E., Eiben, A. E., De Carlo, M., …Tyrrell, A. M. (2023). Practical hardware for evolvable robots. Frontiers in Robotics and AI, 10, Article 1206055. https://doi.org/10.3389/frobt.2023.1206055

The evolutionary robotics field offers the possibility of autonomously generating robots that are adapted to desired tasks by iteratively optimising across successive generations of robots with varying configurations until a high-performing candidate... Read More about Practical hardware for evolvable robots.

Model-free robust decoupling control of nonlinear nonaffine dynamic systems (2023)
Journal Article
Zhu, Q., Li, R., & Zhang, J. (2023). Model-free robust decoupling control of nonlinear nonaffine dynamic systems. International Journal of Systems Science, 54(13), 2590-2607. https://doi.org/10.1080/00207721.2023.2245543

This study presents a model-free robust input-output decoupling control with Nonlinear-Dynamic-Coupling Inversion/Inverter (NDCI) in a U-control framework. Regarding the decoupling, an input/output (I/O) coupling matrix function is proposed to derive... Read More about Model-free robust decoupling control of nonlinear nonaffine dynamic systems.

Vibrational energy transfer in coupled mechanical systems with nonlinear joints (2023)
Journal Article
Shi, B., Yang, J., & Wiercigroch, M. (2023). Vibrational energy transfer in coupled mechanical systems with nonlinear joints. International Journal of Mechanical Sciences, 260, Article 108612. https://doi.org/10.1016/j.ijmecsci.2023.108612

This study investigates vibrational transfer and energy flow in nonlinearly coupled systems, each subjected to a harmonic force with different excitation frequency. A nonlinear joint having either smooth or non-smooth stiffness characteristics at the... Read More about Vibrational energy transfer in coupled mechanical systems with nonlinear joints.

Building rehabilitation, sustainable development, and rural settlements: A contribution to the state of the art (2023)
Journal Article
Mouraz, C. P., Ferreira, T. M., & Silva, J. M. (in press). Building rehabilitation, sustainable development, and rural settlements: A contribution to the state of the art. Environment, Development and Sustainability, https://doi.org/10.1007/s10668-023-03664-5

The quality of life in rural housing settlements is at the heart of territorial cohesion concerns across Europe and the United Nations’ sustainable development goals. However, the gap between urban and rural developments remains substantial, stressin... Read More about Building rehabilitation, sustainable development, and rural settlements: A contribution to the state of the art.

Effect of design variation in behaviour and performance of Endplate-Type intermodular connection (2023)
Journal Article
Rajanayagam, H., Yie Sue, C., Upasiri, I., Poologanathan, K., Nagaratnam, B., O'Grady, K., & Corradi, M. (2023). Effect of design variation in behaviour and performance of Endplate-Type intermodular connection. Structures, 56, Article 104899. https://doi.org/10.1016/j.istruc.2023.104899

Intermodular connections play an important role in the constructability and performance of modular building structures. The wind-generated vertical uplift force and the lateral load on modular structures raise concerns about the tensile and shear cap... Read More about Effect of design variation in behaviour and performance of Endplate-Type intermodular connection.

Model-free sliding mode enhanced proportional, integral, and derivative (SMPID) control (2023)
Journal Article
Zhu, Q. (2023). Model-free sliding mode enhanced proportional, integral, and derivative (SMPID) control. Axioms, 12(8), Article 721. https://doi.org/10.3390/axioms12080721

This study proposes a type of Sliding Mode-based Proportional, Integral, and Derivative (SMPID) controllers to establish a model-free (treat dynamic plants as a whole uncertainty) sliding model control (MFSMC) platform for Bounded-Input and Bounded-O... Read More about Model-free sliding mode enhanced proportional, integral, and derivative (SMPID) control.

Non-predictive model-free control of nonlinear systems with unknown input time delay (2023)
Journal Article
Zhu, Q., Zhang, J., & Zhang, W. (2023). Non-predictive model-free control of nonlinear systems with unknown input time delay. Entropy, 25(7), Article 1076. https://doi.org/10.3390/e25071076

This study presents a general framework for the control of unknown dynamic systems with unknown input delay. A concise output feedback control system is structured with tuning stabilization/dynamic response by an output feedback low gain, removing st... Read More about Non-predictive model-free control of nonlinear systems with unknown input time delay.

Ethical assessment of a hospital disinfection robot (2023)
Journal Article
McGinn, C., Scott, R., Donnelly, N., Cullinan, M. F., Winfield, A., & Treusch, P. (2023). Ethical assessment of a hospital disinfection robot. IEEE International Conference on Robotics and Automation, 12008-12014. https://doi.org/10.1109/ICRA48891.2023.10160903

Robots have the potential to deliver very positive impacts for society, however, it's critical that in preparing for real-world deployments, we recognize and take steps to mitigate against the potential harms, both direct and indirect, that they may... Read More about Ethical assessment of a hospital disinfection robot.

Two-stage grasp detection method for robotics using point clouds and deep hierarchical feature learning network (2023)
Journal Article
Liu, X., Huang, C., Li, J., Wan, W., & Yang, C. (2024). Two-stage grasp detection method for robotics using point clouds and deep hierarchical feature learning network. IEEE Transactions on Cognitive and Developmental Systems, 16(2), 720 - 731. https://doi.org/10.1109/tcds.2023.3289987

When human beings see different objects, they can quickly make correct grasping strategies through brain decisions. However, grasp, as the first step of most manipulation tasks, is still an open issue in robotics. Although many detection methods have... Read More about Two-stage grasp detection method for robotics using point clouds and deep hierarchical feature learning network.

Event-triggered tracking control for switched nonlinear systems (2023)
Journal Article
Dong, X., Qiao, H., Zhu, Q., & Yao, Y. (2023). Event-triggered tracking control for switched nonlinear systems. Mathematical Biosciences and Engineering, 20(8), 14046-14060. https://doi.org/10.3934/mbe.2023627

In this paper, we study the output tracking control problem based on the event-triggered mechanism for cascade switched nonlinear systems. Firstly, an integral controller based on event-triggered conditions is designed, and the output tracking error... Read More about Event-triggered tracking control for switched nonlinear systems.

A fabric-based soft hand exoskeleton for assistance: the ExHand Exoskeleton (2023)
Journal Article
Maldonado-Mejía, J. C., Múnera, M., Diaz, C. A. R., Wurdemann, H., Moazen, M., Pontes, M. J., …Cifuentes, C. A. (2023). A fabric-based soft hand exoskeleton for assistance: the ExHand Exoskeleton. Frontiers in Neurorobotics, 17, Article 1091827. https://doi.org/10.3389/fnbot.2023.1091827

Introduction: The rise of soft robotics has driven the development of devices for assistance in activities of daily living (ADL). Likewise, different types of actuation have been developed for safer human interaction. Recently, textile-based pneumati... Read More about A fabric-based soft hand exoskeleton for assistance: the ExHand Exoskeleton.

Development of adjustable variable stiffness restrainer for bridge subjected to seismic excitation (2023)
Journal Article
Hamzah, M. K., & Hejazi, F. (2023). Development of adjustable variable stiffness restrainer for bridge subjected to seismic excitation. PLoS ONE, 18(6), Article e0286977. https://doi.org/10.1371/journal.pone.0286977

This paper presents a numerical and experimental assessment of a developed adjustable variable stiffness restrainer (AVSR) utilized for short span bridges. This restrainer has the ability to demonstrate multi stiffness capacity in different stages of... Read More about Development of adjustable variable stiffness restrainer for bridge subjected to seismic excitation.

Multivariable signal processing for characterization of failure modes in thin-ply hybrid laminates using acoustic emission sensors (2023)
Journal Article
Fotouhi, S., Assaad, M., Nasor, M., Imran, A., Ashames, A., & Fotouhi, M. (2023). Multivariable signal processing for characterization of failure modes in thin-ply hybrid laminates using acoustic emission sensors. Sensors, 23(11), Article 5244. https://doi.org/10.3390/s23115244

The aim of this study was to find the correlation between failure modes and acoustic emission (AE) events in a comprehensive range of thin-ply pseudo-ductile hybrid composite laminates when loaded under uniaxial tension. The investigated hybrid lamin... Read More about Multivariable signal processing for characterization of failure modes in thin-ply hybrid laminates using acoustic emission sensors.

Smart hybrid composite sensor technology to enhance the detection of low energy impact damage in composite structures (2023)
Journal Article
Fotouhi, S., Jalalvand, M., Wisnom, M. R., & Fotouhi, M. (2023). Smart hybrid composite sensor technology to enhance the detection of low energy impact damage in composite structures. Composites Part A: Applied Science and Manufacturing, 172, Article 107595. https://doi.org/10.1016/j.compositesa.2023.107595

This paper introduces novel structural health monitoring (SHM) sensors to improve the detection of low energy impact damage in laminated composites. The sensor is a purposely designed thin-ply hybrid composite, composed of a layer of unidirectional S... Read More about Smart hybrid composite sensor technology to enhance the detection of low energy impact damage in composite structures.

Structural design and aeromechanical analysis of unconventional blades for future mars rotorcraft (2023)
Journal Article
Lumba, R., Chi, C., Datta, A., Koning, W., Perez, N. P., & Cummings, H. (2023). Structural design and aeromechanical analysis of unconventional blades for future mars rotorcraft. Journal of the American Helicopter Society, 68(4), 42003-42018. https://doi.org/10.4050/JAHS.68.042003

The structural design of rotor blades with ultra-thin, unconventional airfoils is conducted in support of the NASA Rotor Optimization for the Advancement of Mars eXploration (ROAMX) project. The outer mold line was provided by NASA, and the internal... Read More about Structural design and aeromechanical analysis of unconventional blades for future mars rotorcraft.

Vacuum and hover tests of a dihedral–anhedral tip composite rotor (2023)
Journal Article
Chi, C., Datta, A., & Panda, B. (2023). Vacuum and hover tests of a dihedral–anhedral tip composite rotor. Journal of Aircraft, 60(5), 1700-1711. https://doi.org/10.2514/1.c037321

This paper presents test data from vacuum and hover tests of a 2.8-ft-radius dihedral–anhedral tip composite rotor. The paper describes the blades, their fabrication, properties, instrumentation, the test conditions, and the data acquired. The blades... Read More about Vacuum and hover tests of a dihedral–anhedral tip composite rotor.

Direct numerical simulations of turbulent flow over low-pressure turbine blades with aeroelastic vibrations and inflow wakes (2023)
Journal Article
Erfanian Nakhchi, M., Win Naung, S., & Rahmati, M. (2023). Direct numerical simulations of turbulent flow over low-pressure turbine blades with aeroelastic vibrations and inflow wakes. Energies, 16(6), Article 2803. https://doi.org/10.3390/en16062803

In the present work, direct numerical simulation is employed to investigate the unsteady flow characteristics and energy performance of low-pressure turbines (LPT) by considering the blades aeroelastic vibrations and inflow wakes. The effects of infl... Read More about Direct numerical simulations of turbulent flow over low-pressure turbine blades with aeroelastic vibrations and inflow wakes.

Adaptive fuzzy prescribed-time connectivity-preserving consensus of stochastic nonstrict-feedback switched multiagent systems (2023)
Journal Article
Yi, J., Li, J., & Yang, C. (2023). Adaptive fuzzy prescribed-time connectivity-preserving consensus of stochastic nonstrict-feedback switched multiagent systems. IEEE Transactions on Fuzzy Systems, 31(10), 3346-3357. https://doi.org/10.1109/tfuzz.2023.3252601

An adaptive fuzzy prescribed-time connectivity-preserving consensus protocol is designed for a class of stochastic nonstrict-feedback multiagent systems, in which periodic disturbances, switched nonlinearities, input saturation, and limited communica... Read More about Adaptive fuzzy prescribed-time connectivity-preserving consensus of stochastic nonstrict-feedback switched multiagent systems.

Prioritising critical attributes for the management of materials procurement and construction waste (2023)
Journal Article
Chidiobi, C. C., Booth, C. A., & Lamond, J. E. (2024). Prioritising critical attributes for the management of materials procurement and construction waste. Proceedings of the ICE - Waste and Resource Management, 177(1), 29-43. https://doi.org/10.1680/jwarm.22.00013

Construction and demolition waste constitutes the largest municipal solid waste (MSW) globally with environmental concerns. However, waste management is not considered a priority objective in construction compared to time and cost. Therefore, constru... Read More about Prioritising critical attributes for the management of materials procurement and construction waste.