Results 11 to 20 of about 13,293,543 (349)
Rate‐weakening drag during glacier sliding [PDF]
Journal of Geophysical Research: Earth Surface, 2016 AbstractAccurately specifying the relationship between basal drag on a hard, rough glacier bed and sliding speed is a long‐standing and central challenge in glaciology. Drag on a rigid bed consisting of steps with linear treads inclined upglacier—a good idealization for the bedrock morphology of some hard‐bedded glaciers—has been considered in sliding ...
Zoet, Lucas, Iverson, Neal
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Clast collision frequency as an indicator of glacier sliding rate [PDF]
Journal of Glaciology, 1997 Abstract The mechanical interaction between a glacier and subglacial sediment can be observed using an instrumented rod that we refer to as the UBC ploughmeter. For clast-rich sediments, the rate of collision between clasts and a rod dragged through these sediments should be related to the glacier sliding rate. By
Urs Η. Fischer, Garry K. C. Clarke
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Microstructure evolution and deformation mechanisms during high rate and cryogenic sliding of copper [PDF]
Acta Materialia, 2022 S.138-149Frictional sliding induces a distinct discontinuity in the microstructure between a subsurface layer and the underlying bulk material, which strongly influences the tribological performance.
Schneider, R. +3 more
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Saturated sliding mode control with limited magnitude and rate
IET Control Theory & Applications, 2018 This study is concerned with the sliding mode control design subject to actuator saturation. The actuator saturation is formulated with the rate limitation and the standard magnitude limitation. Both the saturated sliding mode control approaches against the known and the unknown bounded uncertainties are discussed.
Wang, Siyi +3 more
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IEEE Access, 2022 To solve the problem that the conventional vector control system of permanent magnet synchronous motor is susceptible to motor parameters and load disturbances, a sliding mode predictive current control strategy of permanent magnet synchronous motor with
Limin Hou, Jianhua Ma, Wen Wang
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IEEE Transactions on Systems, Man & Cybernetics. Systems, 2021 This article focuses on developing an adaptive fast terminal sliding-mode controller (AFTSMC) with power rate proportional reaching law for the position and altitude tracking of a quadrotor in the presence of parametric uncertainties and bounded external
Vibhu Kumar Tripathi +4 more
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A Monte-Carlo error analysis for basal sliding velocity calculations [PDF]
, 2006 Since glacier beds are mostly inaccessible, numerical inversion of the surface velocity field provides a valuable method for calculating the basal shear stress and sliding velocity. However, previous theoretical studies (limited either to planar slabs or
Nienow, Peter +2 more
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Fuzzy sliding mode control method for vertical motion of autonomous underwater gliders
Zhongguo Jianchuan Yanjiu, 2022 ObjectiveThis paper proposes a fuzzy sliding mode controller based on T-S fuzzy logic for the vertical plane motion control of an autonomous underwater glider (AUG) with limited actuator capability.
Lei WAN +4 more
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Novel Power-Rate Reaching Law for Quasi-Sliding Mode Control [PDF]
, 2022 This study elaborates on the quasi-sliding mode control design for discrete time dynamical systems subject to matched external disturbances and modeling uncertainties.
Katarzyna Adamiak, Andrzej Bartoszewicz
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