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RISA Systematic Control Parameter Tuning Framework Based on a Dual-Loop Model Predictive Control Architecture
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Abstract. Systematic and effective control parameter tuning is critical to achieving the desired control performance. However, existing automated tuning methods, such as evolutionary algorithms and machine learning techniques, ...
Modeling and Analysis of Multilayered Elastic Beam Using Spectral Finite Element Method
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Multilayered elastic structures are widely used in engineering applications. In this paper, a spectral finite element model (SFEM) is developed to predict the dynamic behavior of a multilayered beam structure. First, a ...
Temperature Influence on Shrinkage Properties of Cement Stabilized Gravel in Frozen Soil Region
Publisher: American Society of Civil Engineers
Abstract: Dry shrinkage test and temperature shrinkage test were experimented to cement stabilized gravel that preserved simulating the actual temperature in frozen soil region. Shrinkage properties were analyzed. The change trend ...
Microscale Descriptors for Particle-Void Distribution and Jamming Transition in Pre- and Post-Liquefaction of Granular Soils
Publisher: American Society of Civil Engineers
Abstract: Micromechanical modeling provides significant insight into the fundamental mechanism of soil liquefaction. In this study, a series of undrained cyclic simple shear simulations were conducted by using discrete element method ...
Evaluation of Seismic Slope Displacements Based on Fully Coupled Sliding Mass Analysis and NGA-West2 Database
Publisher: American Society of Civil Engineers
Abstract: In this study, two predictive models for seismic slope displacements are developed based on an equivalent-linear fully coupled sliding mass model and 3,714 ground-motion recordings selected from the Next Generation Attenuation ...
A Numerical Study of the Hydrodynamics of an Offshore Fish Farm Using REEF3D
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this article, the hydrodynamics of and nonlinear interaction between the large offshore fish farm “ShenLan 1” and regular waves are investigated using the open-source computational fluid dynamics (CFD) toolbox REEF3D. ...
High Gain and Wideband Antenna-in-Package Solution Using Fan-Out Technology
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The technology of fan-out wafer level packaging (FOWLP) has been widely adopted for millimeter wave antenna-in-package (AiP) system integration with low interconnection parasitic parameters. Present AiP solutions using ...
Model-Free H∞ Output Feedback Control of Road Sensing in Vehicle Active Suspension Based on Reinforcement Learning
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An active suspension system ensures the controllability of a vehicle in the vertical direction, which greatly enhances the control redundancy and safety of an intelligent driven vehicle. However, many calibrated model ...
Constrained H∞ Optimal Control for Nonlinear Active Suspensions Via Data-Driven Reinforcement Learning Algorithm
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper addresses the constrained H∞ optimal control problem for nonlinear active vehicle suspension systems, with a focus on deriving an approximate solution through data-driven reinforcement learning in the context ...
An Analytical Solution for the Excavation Disturbed Zone in Wet–Dry Sensitive Rock Tunnels Based on the Disturbed State Concept Theory
Publisher: American Society of Civil Engineers
Abstract: Abstract Assessing the stability of rocks surrounding a tunnel, particularly with consideration
of rock weathering, is a significant challenge in tunnel engineering. This study proposes
an analytical solution for the ...