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Dapeng Wei, Bilong Liu and Ludi Kang
The control of decentralized velocity feedback on curved aircraft plates under turbulent boundary layer excitations is numerically investigated in this paper. Sixteen active control units are set on the plate to reduce the vibration and sound radiation o...
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Xiyue Ma, Lei Wang and Jian Xu
The results and conclusions obtained from this research can offer guides for a practical design of the decentralized feedback controllers with inertial actuators to actively controlling the vibration and noise radiation of the rib stiffened plate.
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Tiago J. Lopes, Tatiana Sampaio, João P. Oliveira, Mafalda P. Pinto, Daniel A. Marinho and Jorge E. Morais
Evidence on the role of propulsion compared to drag in swimming, based on experimental settings, is still lacking. However, higher levels of propulsion seem to lead to faster swimming velocities. The aim of this study was to understand the variation in a...
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Brij Kishor Tiwari and Rajiv Sharma
The design process for Variable Buoyancy System (VBS) is not known in full, and existing approaches are not scalable. Furthermore, almost all the small size Autonomous Underwater Vehicles/Gliders (AUVs/G?s) use very low capacity of buoyancy change (in th...
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Yun-Peng Su, Xiao-Qi Chen, Tony Zhou, Christopher Pretty and Geoffrey Chase
This paper presents an integrated mapping of motion and visualization scheme based on a Mixed Reality (MR) subspace approach for the intuitive and immersive telemanipulation of robotic arm-hand systems. The effectiveness of different control-feedback met...
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Shahram Karami and Julio Soria
The spatiotemporal dynamics of the coherent structures in an under-expanded supersonic impinging jet are studied using a spectral proper orthogonal decomposition technique. For this analysis, a large eddy simulation of an under-expanded supersonic imping...
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Shahram Karami and Julio Soria
The spatiotemporal dynamics of the coherent structures in an under-expanded supersonic impinging jet are studied using a spectral proper orthogonal decomposition technique. For this analysis, a large eddy simulation of an under-expanded supersonic imping...
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Zhongqi Luo, Hexia Huang, Huijun Tan, Gang Liang, Jinghao Lv, Yuwen Wu and Liugang Li
In this paper, the transient flow simulation in an annular isolator under rotating feedback pressure perturbations simplified from the rotating denotation wave (RDW) is performed. The instantaneous flow characteristics and the self-similarity of the isol...
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Madhur Tiwari, Eric Coyle and Richard J. Prazenica
In this work, we propose a novel controller based on a simple adaptive controller methodology and model predictive control (MPC) to generate and track trajectories of a spacecraft in the vicinity of asteroids. The control formulation is based on using ad...
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Guoqing Xia, Xianxin Sun and Xiaoming Xia
This paper investigates swarm control for unmanned surface vessels subject to multiple constraints. These constraints can be summarized as model parameter uncertainty, the unavailability of velocity measurements, time-varying environmental disturbances, ...
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Bhimashankar Gurav, John Economou, Alistair Saddington and Kevin Knowles
Linear first/second order fin direct current (DC) actuator model approximations for missile applications are currently limited to angular position and angular velocity state variables. Furthermore, existing literature with detailed DC motor models is dec...
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Bhimashankar Gurav, John Economou, Alistair Saddington and Kevin Knowles
Linear first/second order fin direct current (DC) actuator model approximations for missile applications are currently limited to angular position and angular velocity state variables. Furthermore, existing literature with detailed DC motor models is dec...
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Yu Wang, Yujie Wang, Yaxin Li and Cheng Ren
This paper proposes a hybrid propulsion-based small underwater robot for robust trajectory tracking control in a harsh and complex underwater environment. The robot is equipped with a Coanda-effect jet thruster and a pair of propeller-based reconfigurabl...
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Przemyslaw Herman
This paper considers a trajectory-tracking control algorithm for underactuated marine vehicles moving horizontally in which the current in the North-East-Down frame is constant. This algorithm is a modification of a control scheme based on the input-outp...
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Xinlei Qian, Xiaochao Wang, Xinghua Lu, Tianyu Zhang and Wei Fan
The group velocity dispersion (GVD) occurring in the front end of high-power lasers is one of the primary factors leading to the conversion of frequency modulation (FM) to amplitude modulation (AM). In this paper, we propose a modified, active, closed-lo...
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Lizhen Wu, Chang Wang, Pengpeng Zhang and Changyun Wei
Autonomous Unmanned Aerial Vehicle (UAV) landing remains a challenge in uncertain environments, e.g., landing on a mobile ground platform such as an Unmanned Ground Vehicle (UGV) without knowing its motion dynamics. A traditional PID (Proportional, Integ...
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Krzysztof Okarma, Piotr Lech, Darius Andriukaitis, Dangirutis Navikas, Agata Korzelecka-Orkisz, Adam Tanski and Krzysztof Formicki
The optimal water flow in fish breeding tanks is one of the crucial elements necessary for the well-being and proper growth of fish, such as salmon or trout. Considering the round tanks and the uneven distribution of water-flow velocity, ensuring a nearl...
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Lucyna Leniowska, Marcin Grochowina, Mariusz Sierzega and Bogumil Holota
The article presents an adaptive control procedure based on the online recursive identification of the best estimated model of plate bending vibration for vibration cancelation. The test object was a thin, circular aluminum plate, clamped at the edge, wi...
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Santiago Laín, Jaime H. Lozano-Parada and Javier Guzmán
In this contribution, an unsteady numerical simulation of the flow in a microfluidic oscillator has been performed. The transient turbulent flow inside the device is described by the Unsteady Reynolds Averaged Navier?Stokes equations (URANS) coupled with...
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Guoqing Xia, Xianxin Sun and Xiaoming Xia
This paper addresses the distributed swarm control problem of multiple unmanned surface vehicles (USVs) in Euclidean space with virtual leader. Firstly, to investigate the topology of the neighborhood relations between vehicles, a new time-variant topolo...
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