Subscribe free to our newsletters via your
. Space Industry and Business News .




CHIP TECH
Ultra-precision positioning
by Staff Writers
Washington DC (SPX) Mar 29, 2013


File image.

Ultra-precision positioning is required for the success of many scientific applications, including manufacturing semiconductors, aligning optics and manipulating cells. One of the challenges of ultra-precise positioning is providing sufficient torque through small, precise angles.

In a paper accepted for publication in the Review of Scientific Instruments, a journal of the American Institute of Physics, researchers describe a new rotary actuator that accurately delivers more torque than previous devices.

Like many other ultra-precise rotary actuators, the new device's action is driven by piezoelectric material, which converts electrical signals into mechanical movement. The researchers improved upon previous designs with a clamp that integrates the driving and stopping action and can be moved to different distances from the rotor's center.

That gives the researchers both more power and control of the driving forces. Like rotating a bicycle wheel, it is easier to control the torque and speed of the wheel by varying both the force as well as the distance from the center that force is applied.

The researchers report approximately four-fold improvements in both maximum loading torque and accuracy over other piezoelectric actuators at the maximum driving frequency of the other devices.

While the new device can be driven at higher frequencies, the resulting higher speeds mean less accuracy because the rotor is harder to stop due to the additional rotational inertia of the rotor. The researchers are working on a new clamping design to overcome that limitation.

"Design and experimental research of a novel inchworm type piezo-driven rotary actuator with the changeable clamping radius," is published in the Review of Scientific Instruments.

.


Related Links
American Institute of Physics
Computer Chip Architecture, Technology and Manufacture
Nano Technology News From SpaceMart.com






Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News





CHIP TECH
Electronics and High-Performance Computing Communities Sought for Microfluidic Cooling Demo
Washington DC (SPX) Mar 27, 2013
The increased density of electronic components and subsystems in military electronic systems exacerbates the thermal management challenges facing engineers. The military platforms that host these systems often cannot physically accommodate the large cooling systems needed for thermal management, meaning that heat can be a limiting factor for performance of electronics and embedded computers. ... read more


CHIP TECH
CO2 could produce valuable chemical cheaply

Catalyst in a teacup: New approach to chemical reduction

Lasers could yield particle research tool

Paint-on plastic electronics: Aligning polymers for high performance

CHIP TECH
Soldiers and Families Can Suffer Negative Effects from Modern Communication Technologies

DARPA Seeks More Robust Military Wireless Networks

DoD Selects Northrop Grumman for Joint Command and Control System

Northrop Grumman Highlights Affordable Milspace Communications

CHIP TECH
ILS Proton Launches Satmex 8 Satellite for Satmex

When quality counts: Arianespace reaffirms its North American market presence

SpaceX capsule returns after ISS resupply mission

SpaceX Dragon Spacecraft Carrying NASA Cargo Ready for Return to Earth

CHIP TECH
GPS device could stem bike thefts

Apple patent shows pen with GPS, phone

Ground system improves satellite navigation precision

VectorNav Technologies Announces Partnership With NavtechGPS to Market the VN-200 GPS/INS

CHIP TECH
Peru mulls replacing aged air force jets

Two Chinese airlines record falls in 2012 profits

France says Malaysia can build jets if it buys Rafale

Navy tasks Virginia Tech research team with reducing deafening roar of fighter jets

CHIP TECH
Ultra-precision positioning

Berkeley Lab Researchers Use Metamaterials to Observe Giant Photonic Spin Hall Effect

Oregon researchers synthesize negative-charge carrying molecular structures

Electrical signals dictate optical properties

CHIP TECH
How hard is it to 'de-anonymize' cellphone data?

Wearable system can map difficult areas

A Closer Look at LDCM's First Scene

CSTARS Awarded Funding Over Three Years By Office of Naval Research

CHIP TECH
Japan air purifier sales surge amid China smog warning

Hong Kong light pollution 'one of world's worst'

China to more than double air monitoring network

Little faith in China leaders' pollution promises




The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement