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RISL1 Adaptive Controller for a Class of Nonlinear Systems
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents an extension of the L1 adaptive controller to a class of nonlinear systems where the control effectiveness is timevarying and unknown, but with a known sign. Moreover, this class of nonlinear systems ...
L1 Adaptive Control for Aircraft Air Management System Pressure-Regulating Bleed Valve
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents an L1 adaptive controller for pressure control using an engine bleed valve in an aircraft air management system (AMS). The air management system is composed of two pressure-regulating bleed valves, a ...
Nonlinear State Estimation by Adaptive Embedded RBF Modules
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A modeling compensation method is introduced to enhance the performance of the extended Kalman filter (EKF) in coping with the uncertainty of estimation model. In this method, single-input ...
Performance of Polymer Modified Asphalt Bridge Expansion Joints in Low-Temperature Regions
Publisher: American Society of Civil Engineers
Abstract: Conventional asphalt bridge expansion joints used in low-temperature regions generally show cracking within the first
Adaptive Control for Uncertain Hysteretic Systems
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents an approach to use the L1 adaptive controller for a class of uncertain systems in the presence of unknown Preisachtype hysteresis in input, unknown timevarying parameters, and unknown timevarying ...
Effects of Ice-Breaking Nose Shapes on Drift Ice Impact Forces
Publisher: American Society of Civil Engineers
Abstract: By using ANSYS/LS-DYNA explicit dynamical analysis software, finite element models for an ice sheet and a
Load-Dependent Composite Action for Beam Nonlinear and Ductile Behavior
Publisher: ASCE
Abstract: Ductile performance of beam structures often is achieved by material yielding or progressive failure of components. A new structural concept was developed and validated in this study to provide ductile responses of beam ...
Dual functions of insect wings in an odor-guided aeronautic navigation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Insects can detect and locate distant odor sources (food, mate, etc.) by tracking odor plumes, which is key to their survival. During an odor-guided navigation, flapping wings have been speculated to actively draw odorants ...
Long-Term Performance of a Curved Box Girder Viaduct
Publisher: ASCE
Abstract: Deformations due to environmental and mechanical loads in curved bridges can lead to fairly complex long-term effects. Instead of the one-dimensional longitudinal movement that occur in straight bridges, in curved bridges ...
Research on the Nonlinear Relationship between Industrial Agglomeration and Urban Green Development: The Intermediary Role of Industrial Structure Upgrading
Publisher: American Society of Civil Engineers
Abstract: Whether industrial agglomeration (IA) can effectively improve green development efficiency (GDE) is crucial for both the smooth realization of China’s dual carbon goals and the country’s future green development. This paper ...