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In this paper, quadrotor with air drag is locally asymptotically stabilized by using controlled Lagrangians method. Three linear subsystems are got by conducting input transformations, linearization at the desired equilibrium, and invertible state transformations to dynamical model of quadrotor. Then subsystem with two under-actuation degrees is asymptotically stabilized by utilizing controlled Lagrangians...
Additive manufacturing (AM) provides an opportunity to a new design concept in which the manufacturing constrain is released. The engineering design and optimization can include part building parameters to take the advantages of additive manufacturing or 3D printing technology. This paper presents a robotic additive manufacturing process simulation method which pushes one step further in the direction...
The oil and gas industry will keep booming in the coming few decades. The intensifying need to obtain oil and gas from more challenging conventional and non-conventional resources will impose very considerable demands on the sector's human, financial and technology capabilities. Since the future supplies of conventional and non-conventional oil and gas are to expand, it will become increasingly necessary...
The oil and gas industry will keep booming in the coming few decades. Because it becomes more and more challenging to obtain oil and gas from conventional and non-conventional resources, there will be considerable demands on the labor, financial capabilities and technology development. Since the future supplies of oil and gas will expand, more advanced technology will become increasingly necessary...
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