Appliance Design - October 2008 - (Page 27)

MOTORS INTRODUCES The PneuStep motor developed by researchers at Johns Hopkins University uses compressed air to operate. machine during imaging. A motor was also used to drive a stage along the X and Y-axis in minute increments to reposition the mouse and capture different image slices of the animal. The Squiggle motor is primarily used for linear motion such as in a syringe pump, but can also be configured to work in a rotary fashion. In addition to medical applications, Viggiano says the motors are used in many other applications. Mobile phones with high resolutions cameras, for instance, are an appropriate use for these small motors in that the motor can accurately adjust the zoom lens. Additional uses include electronic access control, micro fuel cells and cooling sytems, and mobile robots. While traditional electromagnetic motors work well for many such compact applications, they are reaching the limits of their miniaturization. The piezoelectric motors, however, can be made small enough for even the smallest device. Basically, Viggiano says, the motor can be made as small as a screw and nut can be manufactured. Nanomotion supplies piezomotors for medical applications and a variety of other indus- tries such as the semiconductor industry and for test and metrology instruments. In essence, anywhere accuracy, non-magnetism, and small size are important, the motors can be customized to the application. Nanomotion also uses the reverse piezoelectric effect, but implements the technology in a different way than does New Scale Technologies. Unlike New Scale’s nut that drives a screw, Nanomotion makes motors that are made from layered bulk piezo elements that are driven by a 39.6 kHz voltage to generate an ultrasonic standing wave. The wave causes a ceramic plate to vibrate, bending and contracting in place. The plate is compressed against a mechanical structure such as a gear head assembly, and the back and forth wiggling motion pushing against the structure propels the structure in either a forward or backward direction. It can work be used for a linear or rotary motor depending the bearing structure. If the bearing structure is linear, it moves in a straight line. If the bearing structure is rotary, than the motor rotates. Nanomotion’s PZT motors are based on stacks of piezo- FANLESS 80+ QUIET Up 10dBA total system noise reduction COOL Cooler vestibule temperatures increase component life LOW PROFILE Smaller cabinet depth means savings on materials SAFE No exposed moving parts For nearly a century, Fasco has been designing and manufacturing what has become the industry’s most respected line of AC motors and Blowers. FASCO OFFERS ENDLESS OEM DESIGN SOLUTIONS for your products in: HVAC MEDICAL EQUIPMENT LAWN & GARDEN PUMPS HOUSEHOLD APPLIANCES POWER TOOLS and MORE FASCO 2401 E. Sunshine Springﬁeld, MO 65804 800-616-8721 www.FASCO.com Solutions. Selection. Support. www.applianceDESIGN.com applianceDESIGN October 2008 27 http://www.FASCO.com http://www.FASCO.com http://www.applianceDESIGN.com

Table of Contents Feed for the Digital Edition of Appliance Design - October 2008

Appliance Design - October 2008 Contents Editorial Shipments/Forecasts News Watch Prototyping - Materials Play the Part Prototyping - Mix & Match Motors Electronics Coatings Design Marts Association Report: AHRI Advertiser's Index

Appliance Design - October 2008

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