IEEE Organizations related to Buoyancy

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Conferences related to Buoyancy

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2020 19th IEEE Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems (ITherm)

The ITherm Conference series is the leading international venue for scientific and engineering exploration of thermal, thermomechanical, and emerging technology issues associated with electronic devices, packages, and systems.


2020 IEEE International Conference on Industrial Technology (ICIT)

ICIT focuses on industrial and manufacturing applications of electronics, controls, communications, instrumentation, and computational intelligence.


2020 IEEE International Conference on Plasma Science (ICOPS)

IEEE International Conference on Plasma Science (ICOPS) is an annual conference coordinated by the Plasma Science and Application Committee (PSAC) of the IEEE Nuclear & Plasma Sciences Society.


2020 IEEE International Conference on Robotics and Automation (ICRA)

The International Conference on Robotics and Automation (ICRA) is the IEEE Robotics and Automation Society’s biggest conference and one of the leading international forums for robotics researchers to present their work.


2020 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)

One of the flagship conferences for the IEEE Robotics and Automation Society (RAS)


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Periodicals related to Buoyancy

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Most published Xplore authors for Buoyancy

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Xplore Articles related to Buoyancy

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Depth control methods of variable buoyancy AUV

2017 IEEE Underwater Technology (UT), 2017

Autonomous Underwater Vehicles (AUVs) are widespread and effective tool for oceanographic research. The main applications of AUVs are long-term missions for survey of wide area and patrolling. However the key issue for long term cruising range is energy storage. One of approaches to reduce energy consumption is using of the variable buoyancy system (VBS) on the AUV. This approach allows ...


Development of an underwater glider for virtual mooring and its buoyancy engine

2015 IEEE Underwater Technology (UT), 2015

This paper describes the present status of the development of the underwater glider for virtual mooring. It will be able to stay in a designated area for more than one year, moving between the sea surface and the seafloor up to 2,100 m in depth, and monitor the sea environment. It will be able to sleep on the seafloor or ...


Mechanical system design of automatic sub-surface floating fish cage

2015 IEEE Underwater Technology (UT), 2015

The culture of fish in cages has become a practical and successful method in oceans to get good yield in fish production without going to deep sea. Our system contains a fish cage and an electronic system which makes the cage system submerge to a desired depth to protect fish during adverse weather condition. An automatic sub-surface floating fish cage ...


Sliding mode based MIMO control of autonomous underwater vehicle

2017 11th Asian Control Conference (ASCC), 2017

Autonomous underwater vehicles are gaining importance for its major contribution in scientific, commercial and military underwater applications. The control of AUVs is challenging due to the presence of nonlinearities, un- modeled dynamics and parameter variations along with coupled equation of motion. Complexity is further increased due to the combined control of depth, roll, pitch and yaw for AUVs. This paper ...


Research of an accurate buoyancy adjusting method of underwater glider based on temperature compensation

OCEANS 2017 - Aberdeen, 2017

Underwater glider is developed for the application of marine variables observation by changing the net buoyancy as a driving force. It has many advantages, such as gliding with high efficiency, less power consumption, low noise, no pollution and so on. An accurate buoyancy adjusting method which used for underwater glider based on the volume change of interior gas is introduced ...


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IEEE-USA E-Books

  • Depth control methods of variable buoyancy AUV

    Autonomous Underwater Vehicles (AUVs) are widespread and effective tool for oceanographic research. The main applications of AUVs are long-term missions for survey of wide area and patrolling. However the key issue for long term cruising range is energy storage. One of approaches to reduce energy consumption is using of the variable buoyancy system (VBS) on the AUV. This approach allows to compensate AUV's buoyancy and to reduce energy on hovering due to it. Two combined depth control methods based on cooperative work of propulsion system and variable buoyancy system has been presented in this paper. Estimation of the methods based on calculation of energy consumption and transient response time has been made. Comparison of ones with methods based on standalone work of propulsion system and VBS has been made. Provided methods was proved on simulation and water pool tests on variable buoyancy AUV “CH-2” designed at Institute of Marine Technology Problems FEB RAS year ago.

  • Development of an underwater glider for virtual mooring and its buoyancy engine

    This paper describes the present status of the development of the underwater glider for virtual mooring. It will be able to stay in a designated area for more than one year, moving between the sea surface and the seafloor up to 2,100 m in depth, and monitor the sea environment. It will be able to sleep on the seafloor or while drifting in water to extend the monitoring duration. The first sea-test was conducted in March 2012. In 2013, a new small buoyancy engine was developed and then substituted for the existing one. In recent sea- tests, we evaluated its pitching and heading control performance.

  • Mechanical system design of automatic sub-surface floating fish cage

    The culture of fish in cages has become a practical and successful method in oceans to get good yield in fish production without going to deep sea. Our system contains a fish cage and an electronic system which makes the cage system submerge to a desired depth to protect fish during adverse weather condition. An automatic sub-surface floating fish cage has been developed for deployment in the coastal waters to safeguard the cage during bad weather condition. The prototype fish cage system consists of a rigid HDPE pipe assembly, net cage, variable ballast tank, submersible pump, air control system, floats, mooring ropes, anchors, and control station. The variable ballast tank is used to change the buoyancy of the system so that the fish cage can either be surfaced or submerged. The cage is free to move vertically in a water column by adjusting the weight and the buoyancy with an automatic control system. The system was tested in a test tank facility and sea trail was conducted off Chennai in Bay of Bengal to verify the operability of the fish cage.

  • Sliding mode based MIMO control of autonomous underwater vehicle

    Autonomous underwater vehicles are gaining importance for its major contribution in scientific, commercial and military underwater applications. The control of AUVs is challenging due to the presence of nonlinearities, un- modeled dynamics and parameter variations along with coupled equation of motion. Complexity is further increased due to the combined control of depth, roll, pitch and yaw for AUVs. This paper is focused on such combined control of the nonlinear model of an autonomous underwater vehicle. A novel robust sliding mode controller (SMC) is presented in this paper to perform desired objectives for a nonlinear model of autonomous underwater vehicle. Furthermore, ocean currents model is also incorporated as a disturbance and desired control objectives are achieved against mentioned disturbance. Results obtained from simulation proves the robustness of proposed controllers against of such disturbances.

  • Research of an accurate buoyancy adjusting method of underwater glider based on temperature compensation

    Underwater glider is developed for the application of marine variables observation by changing the net buoyancy as a driving force. It has many advantages, such as gliding with high efficiency, less power consumption, low noise, no pollution and so on. An accurate buoyancy adjusting method which used for underwater glider based on the volume change of interior gas is introduced in this paper. Besides, the buoyancy adjusting system using this method of the self-developed OUC underwater glider is described in detail. And we obtain the relation among the volume of external bladder, interior gas pressure and temperature by a measurement experiment. Finally, the comparative experiment between the interior calculation and the actual measurement of the volume of external bladder is performed simultaneously. The experimental results show that the buoyancy of glider can be accurately measured by the system, therefore successfully proving the validity of the buoyancy adjusting method.

  • Airship trim and stability analysis using bifurcation techniques

    In this paper, bifurcation analysis of a full six degrees of freedom model of an airship is carried out both in unconstrained and constrained conditions. Equations of motion of airship are first modified to a suitable form and a standard as well as constrained bifurcation analysis performed with respect to airship control and design parameters. Typical modes of airship dynamics and regions of stable flights are identified via this analysis. Loss of stability and mode responsible for onset of instability at critical parameter values are also identified.

  • MINAMO: Multidirectional INtuitive Aquatic MObility — Improvement of Stability and Maneuverability

    We have developed the robotic vehicle on water that moves by the rider's balance. Previously, due to the lack of stability of the vehicle, balancing skill was required for the rider. In general, the center of buoyancy of the floating body influences on the stability. Therefore, in this paper, the floating vehicle was modeled and the appropriate body shape and size that improves the stability was simulated. We developed the novel vehicle on water named MINAMO (Multidirectional INtuitive Aquatic MObility), which realized higher stability. In addition, in order to improve the maneuverability for the rider, a force plate is introduced as an interface and MINAMO realized the straight and whirl movement by the control of the rider weight shifting.

  • Expanding the capabilities of the Slocum glider

    The Slocum glider has new developments in vehicle software and hardware that allow increased mission capabilities and endurance. A propeller-based propulsion system provides additional thrust in addition to the standard buoyancy engine. A larger displacement buoyancy engine and on-board software routines create operational flexibility. Low power modes extend vehicle endurance. New mission abort handling routines improve vehicle safety for both open ocean and near-ice operations.

  • Design of a new high speed unmanned underwater glider and motion control

    In this paper, the design and control of a new underwater glider having a high horizontal speed was studied. For this, the capacity of buoyancy engine which performs 2.5(knots) horizontal speed was designed. Especially, a controllable buoyancy engine to regulate the amount of buoyancy was designed and developed for control of the pitching angle of UG and the mass shifter carrying the battery was designed for controlling pitching and yawing motion of the UG. A mathematical modeling based on six degree-of-freedom dynamics equation including the buoyancy engine and mass shifter dynamics was performed to control the UG. Using the mathematical model, a simulation of the yaw motion control of the UG is presented. A number of sea experiments were performed to verify the navigation performance of the developed UG.

  • Multi-body point absorber system without a mooring

    In this paper, we propose a multi-body point absorber system which can harvest ocean wave energy without needing a mooring. The proposed multi-body point absorber system consists of two elements: a multi-body point absorber that extracts the power from the wave, and a Wave Glider that keeps the whole system within a prescribed area. We describe the concept of proposed system. We analyze the heave dynamics of the multi-body point absorber and performed numerical simulations to validate its feasibility.



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