The Experts below are selected from a list of 1732056 Experts worldwide ranked by ideXlab platform
Cesare Pianese - One of the best experts on this subject based on the ideXlab platform.
-
a versatile computational tool for model based Design Control and diagnosis of a generic solid oxide fuel cell integrated stack module
Energy Conversion and Management, 2018Co-Authors: Marco Gallo, Marco Sorrentino, Dario Marra, Cesare PianeseAbstract:Abstract This work focuses on the development of a Control and diagnosis-oriented model of a Solid Oxide Fuel Cell (SOFC) integrated system module (ISM). Fuel cell researchers and developers are currently investing significant resources on such fuel cell-based energy conversion systems, as a consequence of their adaptability to a variety of applications and power size. In this configuration, heat exchanges among components are difficult to manage and, consequently, reliable model-based tools are required to enhance the Design phase. Therefore, the main heat exchange mechanisms (including radiation, here modeled via view-factors-based approach) are evaluated by simplifying 3-D geometries, as well as assuming the outlet temperature from each component as its state variable. The resulting lumped parameters model was proven effective in achieving the required compromise between accuracy and computational time, particularly in view of its real-world deployment for advanced balance of plant (BoP) analyses, as well as within Control and diagnostic model-based tasks. Moreover, the entire SOFC ISM model is generic and can be suitably applied to different layouts, through the characterization of main model parameters. Simulation results are in agreement with experimental data collected on a non-conventional micro-CHP system, named HoTBox™, tested under nominal operating conditions within the EU funded project DIAMOND.
-
development of modeling tools for optimal Design Control and diagnosis of solid oxide fuel cell apus
Global Journal of Technology and Optimization, 2010Co-Authors: Cesare Pianese, Marco SorrentinoAbstract:The Solid Oxide Fuel Cell (SOFC) is nowadays one of the most promising fuel cell technologies, due to a number of positive features, such as high energy conversion efficiency and fuel flexibility. Nevertheless, the actual technological stage pushes the researchers towards the establishment of specific tools and standards to speed-up the transition to SOFC commercialization into a wide application area, ranging from automotive to marine and airplane Auxiliary Power Units (APUs). Particularly in this work, an overview is given on Control-oriented modeling of SOFC at both single cell and stack level. Both numerical results and physical considerations, provided throughout the paper, highlight the importance of developing model-based tools for enhancing Design phases, as well as the definition of reliable Control and diagnostics strategies for SOFC-APUs.
M. Molinari - One of the best experts on this subject based on the ideXlab platform.
-
Symbitron Exoskeleton: Design, Control, and evaluation of a modular exoskeleton for incomplete and complete spinal cord injured individuals
IEEE Transactions on Neural Systems and Rehabilitation Engineering, 2026Co-Authors: C. Meijneke, G. Van Oort, V. Sluiter, E. Van Asseldonk, N. L. Tagliamonte, F. Tamburella, I. Pisotta, M. Masciullo, M. Arquilla, M. MolinariAbstract:In this paper, we present the Design, Control, and preliminary evaluation of the Symbitron exoskeleton, a lower limb modular exoskeleton developed for people with a spinal cord injury. The mechanical and electrical configuration and the Controller can be personalized to accommodate differences in impairments among individuals with spinal cord injuries (SCI). In hardware, this personalization is accomplished by a modular approach that allows the reconfiguration of a lower-limb exoskeleton with ultimately eight powered series actuated (SEA) joints and high fidelity torque Control. For SCI individuals with an incomplete lesion and sufficient hip Control, we applied a trajectory-free neuromuscular Control (NMC) strategy and used the exoskeleton in the ankle-knee configuration. For complete SCI individuals, we used a combination of a NMC and an impedance based trajectory tracking strategy with the exoskeleton in the ankle-knee-hip configuration. Results of a preliminary evaluation of the developed hardware and software showed that SCI individuals with an incomplete lesion could naturally vary their walking speed and step length and walked faster compared to walking without the device. SCI individuals with a complete lesion, who could not walk without support, were able to walk with the device and with the support of crutches that included a push-button for step initiationOur results demonstrate that an exoskeleton with modular hardware and Control allows SCI individuals with limited or no lower limb function to receive tailored support and regain mobility.
Michael Goldfarb - One of the best experts on this subject based on the ideXlab platform.
-
Design, Control, and Preliminary Assessment of a Multifunctional Semipowered Ankle Prosthesis
IEEE-ASME Transactions on Mechatronics, 2019Co-Authors: Harrison L. Bartlett, Brian E Lawson, Michael GoldfarbAbstract:This paper describes the Design, Control, and preliminary assessment of a novel microprocessor-Controlled multifunction ankle prosthesis that provides three microprocessor-Controlled behaviors—a selectable stiffness equilibrium angle, lockable conformal damping, and swing-phase repositioning. Following a description of the motivation for providing these behaviors, the authors provide a detailed description of the device and walking Controller Design. This device utilizes a power-asymmetric linear actuator to provide the desired functionality in a compact and lightweight package through a combination of both hydraulic and electromechanical actuation approaches. The device is Controlled for level ground walking via a finite-state machine. The functionality of the prosthesis is demonstrated by a set of benchtop experiments that characterize the ability of the prosthesis to provide the three desired behaviors and by an experiment in which the prosthesis was worn by a transtibial amputee during walking. Both sets of experiments indicate that the prosthesis provides the functionality for which it was Designed.
-
A Robotic Leg Prosthesis: Design, Control, and Implementation
IEEE Robotics & Automation Magazine, 2014Co-Authors: Brian E Lawson, Elissa Ledoux, Jason Mitchell, Don Truex, Amanda Shultz, Michael GoldfarbAbstract:This article describes the Design and Control of a powered knee and ankle prosthesis for transfemoral amputees. Following a description of the Design hardware, a hybrid Control approach that provides coordination for level walking is described. The hybrid Control approach combines a piecewise-passive impedance-based component during the stance phase of gait with a high impedance trajectory-tracking component during the terminal stance and swing. To validate the Design, the Controller was implemented on the powered prosthesis prototype, and its ability to provide level walking functionality was evaluated on three transfemoral amputee subjects. The data presented from these experimental trials indicate that the prosthesis and Control approach reproduce knee and ankle joint kinematic and kinetic features that are highly representative of corresponding healthy joint biomechanics.
Bjorn D Tyreus - One of the best experts on this subject based on the ideXlab platform.
-
an industrial Design Control study for the vinyl acetate monomer process
Computers & Chemical Engineering, 1998Co-Authors: Michael L Luyben, Bjorn D TyreusAbstract:Abstract This work presents Design details of an industrial process for the manufacture of vinyl acetate monomer. Our purpose is to offer a realistic example that is uniquely suited for academic researchers pursuing simulation, Design, and Control studies. The vinyl acetate process has common, real chemical components. It contains many standard unit operations in a realistic flowsheet. And it illustrates the types of systems of industrial research interest in the areas of process Design, optimization, simulation, and Control. Vapor-phase reactions convert ethylene, oxygen, and acetic acid into vinyl acetate with water and carbon dioxide as byproducts. The process contains a packed tubular reactor, a feed-effluent heat exchanger, an absorber, a vaporizer, an azeotropic distillation column with decanter, and both gas and liquid recycle streams. All physical property, kinetic, and flowsheet data have been compiled from sources in the open literature. We detail the flowsheet information required to construct rigorous steady state and dynamic mathematical models of the process and present the process Control requirements and objectives. Finally, we briefly describe the rigorous nonlinear dynamic simulation we have constructed for this process using TMODS, DuPont’s in-house dynamic simulator. Models of this process have also been developed by Aspen Technology and Hyprotech in their commercial simulators and are available directly from the vendors.
C. Meijneke - One of the best experts on this subject based on the ideXlab platform.
-
Symbitron Exoskeleton: Design, Control, and evaluation of a modular exoskeleton for incomplete and complete spinal cord injured individuals
IEEE Transactions on Neural Systems and Rehabilitation Engineering, 2026Co-Authors: C. Meijneke, G. Van Oort, V. Sluiter, E. Van Asseldonk, N. L. Tagliamonte, F. Tamburella, I. Pisotta, M. Masciullo, M. Arquilla, M. MolinariAbstract:In this paper, we present the Design, Control, and preliminary evaluation of the Symbitron exoskeleton, a lower limb modular exoskeleton developed for people with a spinal cord injury. The mechanical and electrical configuration and the Controller can be personalized to accommodate differences in impairments among individuals with spinal cord injuries (SCI). In hardware, this personalization is accomplished by a modular approach that allows the reconfiguration of a lower-limb exoskeleton with ultimately eight powered series actuated (SEA) joints and high fidelity torque Control. For SCI individuals with an incomplete lesion and sufficient hip Control, we applied a trajectory-free neuromuscular Control (NMC) strategy and used the exoskeleton in the ankle-knee configuration. For complete SCI individuals, we used a combination of a NMC and an impedance based trajectory tracking strategy with the exoskeleton in the ankle-knee-hip configuration. Results of a preliminary evaluation of the developed hardware and software showed that SCI individuals with an incomplete lesion could naturally vary their walking speed and step length and walked faster compared to walking without the device. SCI individuals with a complete lesion, who could not walk without support, were able to walk with the device and with the support of crutches that included a push-button for step initiationOur results demonstrate that an exoskeleton with modular hardware and Control allows SCI individuals with limited or no lower limb function to receive tailored support and regain mobility.