Products: Robotics, Automation & Control
Allegro MicroSystems (Worcester, MA) has announced the A1441 full-bridge motor driver designed to drive single-phase, low-voltage, bipolar brushless DC motors. Commutation of the motor is achieved by the use of one Hall element...
Products: Robotics, Automation & Control
Datastick Systems (Campbell, CA) offers the VSA-1212 vibration spectrum analyzer, a PDA-based vibration analyzer that uses off-the-shelf ICP®-type piezoelectric accelerometers for machine condition monitoring and...
Products: Robotics, Automation & Control
Lexair (Lexington, KY) has announced the Lexair/ Production Dynamics Full Bore® chuck, a mechanical-grip, air-release, front-mounted collet chuck designed to make the full spindle bore available to handle larger bar stock. The...
Products: Robotics, Automation & Control
Pittman® Brushless DC servomotors from PennEngineering® Motion Technologies (Harleysville, PA) feature a slotless stator design for applications in data storage, medical, semiconductor, and automation. Features include...
Products: Robotics, Automation & Control
Exlar Corp. (Chanhassen, MN) has introduced the Exlar I Series electro-mechanical actuator with roller screw technology. Users have a choice of motor brand and type, including brushless servo, stepper, DC, or AC...
Briefs: Software
Madsen Giersing, an Australian consulting engineering firm that specializes in marine engineering and construction solutions, was commissioned to design a new bulk liquids...
Briefs: Photonics/Optics
Whispering-gallery-mode (WGM) optical resonators of a type now under development are designed to support few well-defined waveguide modes. In the simplest case, a resonator of this type would...
Briefs: Photonics/Optics
Electrically Tunable Terahertz Quantum-Cascade Lasers
Improved quantum-cascade lasers (QCLs) are being developed as electrically tunable sources of radiation in the far infrared spectral region, especially in the frequency range of 2 to 5 THz. (Heretofore, the wavelengths of QCLs have been adjusted by changing temperatures, but not by changing...
Briefs: Medical
Biomimetic/optical sensors have been proposed as means of real-time detection of bacteria in liquid samples through real-time detection of compounds secreted by the bacteria....
Briefs: Medical
Analysis of Membrane Lipids of Airborne Micro-Organisms
A method of characterization of airborne micro-organisms in a given location involves (1) large-volume filtration of air onto glass-fiber filters; (2) accelerated extraction of membrane lipids of the collected micro-organisms by use of pressurized hot liquid; and (3) identification and...
Briefs: Medical
A noninvasive, sensitive method of diagnosing certain pathological conditions of the human heart involves computational processing of digitized...
Products
Matrox Graphics, Montreal, Canada , has introduced DualHead2Go™, an external device that connects to the monitor connector of a computer to add support for an extra monitor. The operating system treats the device...
Who's Who: Mechanical & Fluid Systems
Dr. Walter Merrill, Associate for Business Development, John H. Glenn Research Center, Cleveland, OH
Dr. Walter Merrill is involved in a variety of programs aimed at forming partnerships with private and public entities. For the past five...
Application Briefs: Software
UGS Corp.
Plano, TX
341-264-8216
www.ugs.com
Application Briefs: Test & Measurement
Southwest Research Institute
San Antonio, TX
210-684-5111
www.swri.org
Briefs: Mechanical & Fluid Systems
A proposed data-fusion system, to be implemented mostly in software, would further process the digitized and preprocessed outputs of sensors in a turbofan engine to detect...
Briefs: Mechanical & Fluid Systems
Future nuclear-powered Ion-Propulsion- System-propelled spacecraft such as Jupiter Icy Moon Orbiter (JIMO) will carry more than 10,000 kg of xenon propellant. Typically, a...
Briefs: Electronics & Computers
Fuel Cells Utilizing Oxygen From Air at Low Pressures
A fuel cell stack has been developed to supply power for a high-altitude aircraft with a minimum of air handling. The fuel cell is capable of utilizing oxygen from ambient air at low pressure with no need for compression. For such an application, it is advantageous to take oxygen from the air...
Briefs: Electronics & Computers
Hybrid Ion-Detector/Data-Acquisition System for a TOF-MS
A modified ion-detector/ data-acquisition system has been devised to increase the dynamic range of a time-of-flight mass spectrometer (TOF-MS) that, previously, included a microchannel-plate detector and a data-acquisition system based on counting pulses and time-tagging them by use of a...
Briefs: Electronics & Computers
Spontaneous-Desorption Ionizer for a TOF-MS
A time-of-flight mass spectrometer (TOF-MS) like the one mentioned in the immediately preceding article has been retrofitted with an ionizer based on a surface spontaneous- desorption process. This ionizer includes an electron multiplier in the form of a microchannel plate (MCP). Relative to an ionizer...
Briefs: Electronics & Computers
When acquiring low-data-rate signals such as temperature, engineers sometimes forget that low-data-rate sampling does not guarantee an uncontaminated recording. Regardless of the...
Briefs: Manufacturing & Prototyping
Manufacturing Precise, Lightweight Paraboloidal Mirrors
A process for fabricating a precise, diffraction- limited, ultralightweight, composite-material (matrix/fiber) paraboloidal telescope mirror has been devised. Unlike the traditional process of fabrication of heavier glass-based mirrors, this process involves a minimum of manual steps and...
Briefs: Manufacturing & Prototyping
Automated Solvent Seaming of Large Polyimide Membranes
A solvent-based welding process enables the joining of precise, cast polyimide membranes at their edges to form larger precise membranes. The process creates a homogeneous, optical - quality seam between abutting membranes, with no overlap and with only a very localized area of figure...
Briefs: Semiconductors & ICs
A system of electronic instrumentation, constituting the equivalent of a two-port vector network analyzer, has been developed for use in on-wafer measurement of key electrical...
Briefs: Semiconductors & ICs
PVM Enhancement for Beowulf Multiple-Processor Nodes
A recent version of the Parallel Virtual Machine (PVM) computer program has been enhanced to enable use of multiple processors in a single node of a Beowulf system (a cluster of personal computers that runs the Linux operating system). A previous version of PVM had been enhanced by addition of...
Briefs: Semiconductors & ICs
Programs for Testing Processor-in-Memory Computing Systems
The Multithreaded Microbenchmarks for Processor-InMemory (PIM) Compilers, Simulators, and Hardware are computer programs arranged in a series for use in testing the performances of PIM computing systems, including compilers, simulators, and hardware. The programs at the beginning of the...
Briefs: Physical Sciences
Four methods of detection of bodies of water are under development as means to enable autonomous robotic ground vehicles to avoid water hazards when traversing off-road terrain. The...
Briefs: Information Technology
A new robust method of automated real-time diagnosis of faults in an aircraft engine or a similar complex system involves the use of a bank of Kalman filters. In order to be highly...
Briefs: Information Technology
Conflict-Aware Scheduling Algorithm
A conflict-aware scheduling algorithm is being developed to help automate the allocation of NASA's Deep Space Network (DSN) antennas and equipment that are used to communicate with interplanetary scientific spacecraft. The current approach for scheduling DSN ground resources seeks to provide an equitable...
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