Xem 1-12 trên 12 kết quả Motion and constraints
  • Our planet is nowadays continuously monitored by powerful remote sensors operating in wide portions of the electromagnetic spectrum. Our capability of acquiring detailed information on the environment has been revolutionized by revealing its inner structure, morphology and dynamical changes. The way we now observe and study the evolution of the Earth’s status has even radically influenced our perception and conception of the world we live in.

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  • Mechatronics, the synergistic blend of mechanics, electronics, and computer science, has evolved over the past twenty-five years, leading to a novel stage of engineering design. By integrating the best design practices with the most advanced technologies, mechatronics aims at realizing highquality products, guaranteeing, at the same time, a substantial reduction of time and costs of manufacturing.

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  • Robotics is the applied science of motion control for multi-axis manipulators and is a large subset of the field of "mechatronics" (Mechanical, Electronic and Software engineering for product or systems development, particularly for motion control applications). Mechatronics is a more general term that includes robotic arms, positioning systems, sensors and machines that are controlled by electronics and/or software, such as automated machinery, mobile robots and even your computer controlled washing machine and DVD movie player....

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  • Tham khảo sách 'computational dynamics', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • In particular, the present treatment correctly accounts not only for what (2a) fails to entail - - namely, that John eventually reaches the museum - - but also for what (2a) does in fact entail - - namely, that John follows (by jogging) at least an initial part of a path that leads to the museum. In the second part of the paper, I briefly describe an implemented algorithm based on this theoretical treatment which determines whether a specified sequence of trajectory-of-motion is or is not possible under certain situationally supplied constraints and restrictive assumptions. ...

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  • The nonholonomic nature of the car-like robot is related to the assump- tion that the robot wheels roll without slipping. This implies the presence of a nonintegrable set of rst-order di erential constraints on the con guration variables. While these nonholonomic constraints reduce the instantaneous mo- tions that the robot can perform, they still allow global controllability in the con guration space. This unique feature leads to some challenging problems in the synthesis of feedback controllers, which parallel the new research issues arising in nonholonomic motion planning.

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  • This book gives an account of the modern view of the global circulation of the atmosphere. It brings the observed nature of the circulation together with theories and simple models of the mechanisms which drive it. Early chapters concentrate on the classical view of the global circulation, on the processes which generate atmospheric motions and on the dynamical constraints which modify them. Later chapters develop more recent themes including low frequency variability and the circulation of other planetary atmospheres....

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  • Second, the model is consistent with multifactor volatility models or CGARCH e¤ects. Both endowment risk and sentiment risk are associated with instantaneous shocks associated with the idiosyncratic risk embedded in the Brownian motions present in the investors endowments. In contrast, solvency risk is associated with the binding of solvency constraints, and therefore it occurs at a lower frequency.

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  • A related modern example is the snakeboard (see LEWIS,OSTROWSKI,MURRAY &BURDICK [1994]),which shares some of the features of these examples butwhich has a crucial difference as well. This example, likemany of the others, has the sym- metry group SE(2) of Euclidean motions of the plane but, now, the corresponding momentum is not conserved. However, the equation satisfied by the momentum associated with the symmetry is useful for understanding the dynamics of the prob- lem and how group motion can be generated.

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  • Problems of nonholonomic mechanics, including many problems in robotics, wheeled vehicular dynamics and motion generation, have attracted considerable attention. These problems are intimately connected with important engineering issues such as path planning, dynamic stability, and control.Thus, the investigation of many basic issues, and in particular, the role of symmetry in such problems, remains an important subject today.

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  • The second way guarantees a realistic motion by using physical laws, especially dynamic simulation. The problem with this type of animation is controlling the motion produced by simulating the physical laws which govern motion in the real world. The animator should provide physical data corresponding to the complete definition of a motion. The motion is obtained by the dynamic equations of motion relating the forces, torques, constraints and the mass distribution of objects. As trajectories and...

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  • For evaluation purposes, three distinct training and test- ing splits were generated from the database. The sets were built to ensure that clips from the same video were not used for both training and testing and that the relative proportions of meta tags such as camera position, video quality, motion, etc. were evenly distributed across the training and testing sets.

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