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Numerical Modeling of PEM Fuel Cells Under Partially Hydrated Membrane Conditions
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In proton-exchange membrane fuel cells it is particularly important to maintain appropriate water content and temperature in the electrolyte membrane. The water balance depends on the coupling ...
Robust Backstepping Sliding Mode Attitude Tracking and Vibration Damping of Flexible Spacecraft with Actuator Dynamics
Publisher: American Society of Civil Engineers
Abstract: This paper presents a dual-stage control system design method for the attitude tracking control and vibration stabilization of a spacecraft with flexible appendages embedded with piezoceramics as sensor and actuator. In ...
A Learning Variable Structure Controller of a Flexible One-Link Manipulator
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this paper, tip regulation of a flexible one-link manipulator by Learning Variable Structure Control (LVSC) is investigated. Switching surface is designed according to a selected reference ...
Workpiece Positioning Analyses: The Exact Solutions and a Quadratic Variation Approximation Using the Method of Moments
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents algorithms for workpiece positioning analysis under locating errors. Workpiece constraint equations are first constructed using the method of homogenous coordinate transformation. ...
Vibration Serviceability Assessment for Pedestrian Bridges Based on Model Falsification
Publisher: ASCE
Abstract: With the development of new materials and advanced structural analysis, alongside increasing aesthetic requirements, recent years have witnessed a trend toward longer, taller, and lighter footbridges. Different from vehicular ...
Adaptive Monte Carlo Simulation Method and Its Applications to Reliability Analysis of Series Systems with a Large Number of Components
Publisher: ASCE
Abstract: It is not uncommon to encounter engineering structures that can be modeled as series systems with a large, even unlimited, number of correlated components (e.g., component number greater than 1,000). It can be a ...