Frazier W.E.,Command Systems
Journal of Materials Engineering and Performance | Year: 2014
This paper reviews the state-of-the-Art of an important, rapidly emerging, manufacturing technology that is alternatively called additive manufacturing (AM), direct digital manufacturing, free form fabrication, or 3D printing, etc. A broad contextual overview of metallic AM is provided. AM has the potential to revolutionize the global parts manufacturing and logistics landscape. It enables distributed manufacturing and the productions of parts-on-demand while offering the potential to reduce cost, energy consumption, and carbon footprint. This paper explores the material science, processes, and business consideration associated with achieving these performance gains. It is concluded that a paradigm shift is required in order to fully exploit AM potential. © ASM International.
Cotton N.J.,Command Systems |
Wilamowski B.M.,Auburn University
IEEE Transactions on Industrial Electronics | Year: 2011
This paper describes a method of linearizing the nonlinear characteristics of many sensors and devices using an embedded neural network. The neuron-by-neuron process was developed in assembly language to allow the fastest and shortest code on the embedded system. The embedded neural network also requires an accurate approximation for hyperbolic tangent to be used as the neuron activation function. The proposed method allows for complex neural networks with very powerful architectures to be embedded on an inexpensive 8-b microcontroller. This process was then demonstrated on several examples, including a robotic arm kinematics problem. © 2009 IEEE.
Doerry N.,Command Systems
IEEE Electrification Magazine | Year: 2015
Mirroring the terrestrial power system, naval warships have employed electrical power systems for over 100 years. The design philosophy for naval power systems is expressed well by the Naval Sea Systems Command (NAVSEA) Design Practices and Criteria Manual, Electrical Systems for Surface Ships, Chapter 300: © 2015 IEEE.
Lakhoua M.N.,Command Systems
International Journal of Physical Sciences | Year: 2010
This paper presents the applications of a supervisory control and data acquisition (SCADA) system in thermal power plants (TPPs). In fact, a supervisory system must take into account the physiological and cognitive features of the supervisory operator. The paper briefly discusses on the one hand the different steps of the application of a SCADA system and the difficulties to manage and on the other hand it presents three examples of the application of a SCADA system in a TPP in Tunisia and the instrumentations and the measurements used. The first application is related to a counting system of the natural gas, the second one is related to the supervision of pumps vibrations and the third one is related to the supervision of heavy fuel oil. © 2010 Academic Journals.
Viner V.,Command Systems
Journal of Applied Polymer Science | Year: 2013
Thermal frontal polymerization is an exothermic process that uses a propagating wave to polymerize monomers via an external heat source, such as a soldering iron, to initiate front propagation. Herein, for the first time, the curing of a cyanate ester via thermal frontal polymerization is described with two different external heat sources. However, issues of bubbling due to vaporization of the amine catalyst generally resulted in incomplete frontal polymerization when a soldering iron was used as the external heat source. To counter this issue, dual-strip polymerization systems were used, wherein the heat from the exothermic polymerization of a free-radical system was used to initiate the frontal polymerization of a cyanate ester system with an amine catalyst. As a result, complete frontal polymerization occurred. Additionally, the effect of the width of the acrylate strip and its impact on the front temperature, initial velocity, and steady-state velocity of the adjacent cyanate ester system were studied. © 2012 Wiley Periodicals, Inc.