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RISRobust Control of Uncertain Nonlinear Systems: A Nonlinear DOBC Approach
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper advocates disturbance observerbased control (DOBC) for uncertain nonlinear systems. Within this framework, a nonlinear controller is designed based on the nominal model in the absence of disturbance and uncertainty ...
On Relationship Between Time Domain and Frequency Domain Disturbance Observers and Its Applications
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper provides a generic analysis of the relationship between timeand frequencydomain disturbance observer (DOB) design methodology. It is discovered that the traditional frequencydomain DOBs using a lowpass filter ...
The Initiation of Modern “Soft Snowball” and “Hard Snowball” Climates in CCSM3. Part II: Climate Dynamic Feedbacks
Publisher: American Meteorological Society
Abstract: his study investigates the climate dynamic feedbacks during a transition from the present climate to the extremely cold climate of a ?Snowball Earth? using the Community Climate System Model, version 3 (CCSM3). With the ...
The Initiation of Modern “Soft Snowball” and “Hard Snowball” Climates in CCSM3. Part I: The Influences of Solar Luminosity, CO2 Concentration, and the Sea Ice/Snow Albedo Parameterization
Publisher: American Meteorological Society
Abstract: he ?Snowball Earth? hypothesis, proposed to explain the Neoproterozoic glacial episodes in the period 750?580 million years ago, suggested that the earth was globally covered by ice/snow during these events. This study ...
A Hybrid Thresholding Algorithm for Cloud Detection on Ground-Based Color Images
Publisher: American Meteorological Society
Abstract: loud detection is the precondition for deriving other information (e.g., cloud cover) in ground-based sky imager applications. This paper puts forward an effective cloud detection approach, the Hybrid Thresholding Algorithm ...
Possible Dependence of Climate on Atmospheric Mass: A Convection–Circulation–Cloud Coupled Feedback
Publisher: American Meteorological Society
Abstract: The total mass of the atmosphere [or equivalently, the background surface pressure (SP)] may have varied significantly over the evolutionary histories of Earth and other planets. Atmospheric mass can affect climate by ...
A Transbasin Mode of Interannual Variability of the Central American Gap Winds: Seasonality and Large-Scale Forcing
Publisher: American Meteorological Society
Abstract: AbstractA transbasin mode (TBM) is identified as the leading mode of interannual surface wind variability over the Intra-Americas Seas across Central America based on empirical orthogonal function analysis. The TBM is ...
High Temperature Lubricating Behavior of NiAl Matrix Composites With Addition of CuO
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: High temperature selflubricating NiAl matrix composites with addition of CuO (15, 20, and 25 wt.%) were fabricated by powder metallurgy technique, and the tribological behavior from room temperature to 1000 آ°C was ...
Density Convex Model Based Robust Optimization to Key Components of Surgical Robot
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper investigates a new robust optimization framework based on densityconvex reliability model and applies it to the dimensional optimization of magnetic resonance (MR) compatible surgical robot. As a justified tool ...
Study of Stability of Surrounding Rock due to the Approach of Two Excavation Faces and Face Reinforcement in a Large Cross-Section Tunnel in Weak Stratum
Publisher: American Society of Civil Engineers
Abstract: When the two excavation faces of a tunnel constructed from both the entrance and exit simultaneously in soft surrounding rock approach, the excavation surface disturbance areas are superimposed, stress and deformation in ...