Features

Laser Doppler Vibrometer

MetroLaser (Irvine, CA) has announced the VibroMet 500V single-beam laser Doppler vibrometer that features a sensitivity range of 2 microns/sec, and a vibration velocity measurement range of 1 meter/sec. The laser is collimated, so there is no need to adjust a focusing lens. Its solid-state laser diode ensures the system receives signals at distances of up to 5 meters. The system has a visible red laser beam for point and measure operation. The VibroMet 500V is suitable for quality assurance, product optimization, and other applications that require measuring vibration without touching the object being measured. Common measurement applications include turbine blades for aircraft and power generators, automobile engines, body parts and mufflers, computer disk drives and storage devices, and optical and laser systems.

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Shortwave Infrared Camera

Sensors Unlimited, Goodrich Corp. (Princeton, NJ) has announced the SU640SDWH-1.7RT high-frame-rate, high-resolution, shortwave infrared (SWIR) camera. The indium gallium arsenide (InGaAs) camera has regions of interest (ROI) windowing capabilities with high-sensitivity SWIR spectral response from 900 nm to 1,700 nm. The 640 × 512 pixel focal plane array on a 25-micron pitch captures full-size images at 109 frames per second, or can image smaller regions of interest at over 15,000 frames per second with 100% fill factor.

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LED Illuminator

The LV-1000 LED-based microscope light source from Micro-Lite® (Three Rivers, MA) incorporates LEDs as the light source. The illuminator features 360-degree, shadow-free uniform illumination; low voltage; and reduced glare. Brightness can be user-controlled to suit specific viewing requirements. The white light source will fit most microscopes and Stereo-zoom-based production microscopes.

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Multiplexer

LightSmyth Technologies (Eugene, OR) offers an integrated, single-mode-compatible, coarse WDM (CWDM) multiplexer based on the company’s nanophotonic filtering technology. The unit is passively athermal and polarization insensitive to 0.2 dB. It is based on the silica-on-silicon planar waveguide format, and requires chips of only 1 square centimeter. It uses the Deep UV photolithographic patterning tools used in electronics. The multiplexer’s diffractive nanophotonic filtering engine combines the integration capabilities of gratings with the functionality of thin-film filters.

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The Air Bearing Advantage in High-Precision Positioning

All moving objects possess six degrees of freedom — three linear and three rotary. The task of a linear motion guideway is to eliminate, as closely as possible, five of these degrees of freedom, leaving a single rotary or linear axis of motion. Air bearings are the purest and highest-performance means of defining linear or rotary motion, and have substantial advantages over conventional mechanical guideways. These advantages become more pronounced as the desired resolution increases, and many aspects of high-precision positioning are uniquely enhanced when air bearing guideways are chosen.

Posted in: Features, Motion Control, Articles

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Motion Control Research Center Develops Speed Control System for SRM Drives

The Center for Rapid Transit Systems at Virginia Tech (Blacksburg, VA) is an internationally recognized drive systems and motion control research group with expertise in the design, simulation, and control of switched reluctance motor (SRM) drives and power converter topologies.

Posted in: Applications, Motion Control, Application Briefs

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“Pinball Wizards” Bank on Motion/Stress Analysis Software to Redesign Game

Stern Pinball of Melrose Park, IL, is the only manufacturer of coin-operated pinball machines in the world. Today, Stern’s pinball games are designed using sophisticated computer simulation software.

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