The safety transfer on the sea is threatened by wind, wave and surge loads. An offshore gangway ensures smooth safe compensating ship’s motion. In a mixed system, huge asymmetric load top of stable platform, displacement its center gravity causes it to exert large dynamic platform. A model under established in this work. Lagrange equation used establish gangway; equivalent method visualize load...

This paper describes the design, development, and utility of a fully operational computer simulation of a 6 degree-of-freedom motion platform. Such devices are commonly used for a wide variety of flight simulation, driving simulation, location-based entertainment, and training applications worldwide. Such a “virtual motion platform” will provide a fast, easy, and safe mechanism by which new can...

Abstract. The aerodynamics of floating turbines is complicated by large motions which are permitted the foundation, and interaction between turbine, wind, wake not yet fully understood. object this paper a wind tunnel campaign finalized at characterizing aerodynamic response 1:100 scale model IEA 15 MW subjected to imposed platform motion. turbine studied focusing on thrust force, torque, 2.3D ...

The Technical University of Denmark (DTU) 10 MW wind turbine is selected as the object this study. braceless semi-submersible platform for National Renewable Energy Laboratory 5 upscaled to support DTU turbine. servo control system redesigned. Furthermore, torque performed below rated speed achieve maximum power capture, and gain scheduling proportional integral (GSPI) method above realize desi...

surge and rotating stall phenomena are two dynamic instabilities that occur in both axial and centrifugal compressors. surge is the stream instability phenomenon in compressor that imposes severe damages to the compressors. nowadays, suppressing surge phenomenon is one of the most important issues in oil and gas industries, especially when flow reduction or gas reflux is considered. this resear...

The Arctic region is rich in oil and gas resources, but exploitation of resources there always facing great challenge. Floating offshore platform considered as a practical choice for exploration the deep water regions. One key technologies positioning system design under harsh arctic sea loads. In this paper, comprehensive investigated. A coupled numerical model composed mooring-assisted dynami...

Recent platforms, like Uber and Lyft, offer service to consumers via “self-scheduling” providers who decide for themselves how often to work. These platforms may charge consumers prices and pay providers wages that both adjust based on prevailing demand conditions. For example, Uber uses a “surge pricing” policy, which pays providers a fixed commission of its dynamic price. We find that the opt...

There are many occasions where the base of a robotic manipulator is attached to a moving platform, such as on a moving ship, terrain or space shuttle. In this paper a dynamic model of a robotic manipulator mounted on a moving base is derived using both Newton-Euler and Lagrange-Euler methods. The presented models are simulated for a Mitsubishi PA10-6CE robotic manipulator characteristics mounte...